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Emerald tree
Emerald tree
Emerald tree
Emerald tree
Emerald tree
Emerald tree
Emerald tree
Radermachera sinica
Also known as : China doll
A fairly new plant to the houseplant scene, the emerald tree grows in the shape of a tree but remains compact. Radermachera sinica plants thrive in four to five hours of bright indirect light per day with moist but well-draining soil. Despite their finicky nature, Radermachera sinica is becoming increasingly popular as a houseplant.
Planting Time
Planting Time
Winter
care guide

Care Guide for Emerald tree

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Watering Care
Watering Care
Emerald tree is sensitive to both drought and flooded soil, so keeping an even amount of moisture in the soil is important to help your plant thrive. When the top 1 inch of soil is dry, thoroughly water your tree without waterlogging the soil. If you notice yellowing or dropping leaves, you'll need to adjust how much water you're giving it.
Details on Watering Care Watering Care
Fertilizing Care
Fertilizing Care
The emerald tree thrives in rich, nutrient-dense soil, so it has rather high fertilizing needs. Every two weeks from spring to summer, give your tree a balanced liquid fertilizer diluted by half. Or, you can give it a slow-release granular fertilizer once in the spring and once in the summer.
Details on Fertilizing Care Fertilizing Care
Soil Care
Soil Care
Slightly alkaline
Details on Soil Care Soil Care
Ideal Lighting
Ideal Lighting
Partial sun, Full sun, Full shade
Details on Sunlight Requirements Ideal Lighting
Ideal Temperature
Ideal Temperature
10 to 12
Details on Temperature Ideal Temperature
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Emerald tree
Sunlight
Sunlight
Partial sun
Hardiness Zones
Hardiness Zones
10 to 12
Planting Time
Planting Time
Winter
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Questions About Emerald tree

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Watering Watering Watering
Pruning Pruning Pruning
Sunlight Sunlight Sunlight
Temperature Temperature Temperature
Fertilizing Fertilizing Fertilizing
What is the best way to water my Emerald tree?
Your Emerald tree will not be too picky about how you choose to water it. As such, you can use just about any common watering tool to moisten this plant’s soil. Watering cans, hoses, and even cups will work just fine when it is time to water your Emerald tree. Regardless of which watering tool you use, you should typically apply the water directly to the soil. In doing so, you should ensure that you moisten all soil areas equally to give all parts of the root system the water it needs. It can help to use filtered water, as tap water can contain particles that are harmful to plants. It is also beneficial to use water that is at or slightly above room temperature, as colder or hotter water can be somewhat shocking to the Emerald tree. However, the Emerald tree usually responds well to any kind of water you give it.
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What should I do if I water my Emerald tree too much or too little?
For outdoor plants, especially newly planted plants or plant seedlings, they can be prone to lack of watering. Remember that you need to keep watering enough for a few months when the tree is small or just planted. This is because once the roots are established, Emerald tree can rely on rain most of the time.
When your Emerald tree is planted in pots, overwatering is often more likely to.When you accidentally overwater your Emerald tree, you should be prepared to remedy the situation immediately. First, you should stop watering your plant right away to minimize the effect of your overwatering. After, you should consider removing your Emerald tree from its pot to inspect its roots. If you find that none of the roots have developed root rot, it may be permissible to return your plant to its container. If you do discover signs of root rot, then you should trim away any roots that have been affected. You may also want to apply a fungicide to prevent further damage. Lastly, you should repot your Emerald tree in soil that is well-draining. In the case of an underwatered Emerald tree, simply water this plant more frequently.
Underwatering is often an easy fix. If you underwater, the plant's leaves will tend to droop and dry out and fall off, and the leaves will quickly return to fullness after sufficient watering. Please correct your watering frequency as soon as underwatering occurs.
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How often should I water my Emerald tree?
Most plants that grow naturally outdoors can be allowed to grow normally with rainfall. If your area lacks rainfall, consider giving your plants adequate watering every 2 weeks during the spring and fall. More frequent watering is needed in summer. In winter, when growth becomes slower and plants need less water, water more sparingly. Throughout the winter, you may not give it additional watering at all. If your Emerald tree is young or newly planted, then you should water more frequently to help it establish, and mature and grow up to have more adaptable and drought tolerant plants.
For potted plants, there are two main ways that you can determine how often to water your Emerald tree. The first way is to set a predetermined watering schedule. If you choose this route, you should plan to water this plant about once every week or once every other week. However, this approach may not always work as it does not consider the unique conditions of the growing environment for your Emerald tree .
Your watering frequency can also change depending on the season. For instance, a predetermined watering schedule will likely not suffice during summer when this plant's water needs are highest. An alternative route is to set your watering frequency based on soil moisture. Typically, it is best to wait until the first two to four inches of soil, usually ⅓ to ½ depth of the pots, have dried out entirely before you give more water.
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How much water does my Emerald tree need?
When it comes time to water your Emerald tree, you may be surprised to find that this plant does not always need a high volume of water. Instead, if only a few inches of soil have dried since your last watering, you can support healthy growth in the Emerald tree by giving it about five to ten ounces of water every time you water. You can also decide your water volume based on soil moisture. As mentioned above, you should note how many inches of soil have dried out between waterings. A surefire way to make sure your Emerald tree gets the moisture it needs is to supply enough water to moisten all the soil layers that became dry since the last time you watered. If more than half of the soil has become dry, you should consider giving more water than usual. In those cases, continue adding water until you see excess water draining from your pot’s drainage holes.
If your Emerald tree is planted in an area that gets plenty of rain outdoors, it may not need additional watering. When the Emerald tree is young or just getting established, make sure it gets 1-2 inches of rain per week. As it continues to grow and establish, it can survive entirely on rainwater and only when the weather is hot and there is no rainfall at all for 2-3 weeks, then consider giving your Emerald tree a full watering to prevent them from suffering stress.
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How can I tell if i'm watering my Emerald tree enough?
Overwatering is a far more common problem for the Emerald tree, and there are several signs you should look for when this occurs. Generally, an overwatered Emerald tree will have yellowing leaves and may even drop some leaves. Also, overwatering can cause the overall structure of your plant to shrivel and may also promote root rot. On the other hand, an underwatered Emerald tree will also begin to wilt. It may also display leaves that are brown or brittle to the touch. Whether you see signs of overwatering or underwatering, you should be prepared to intervene and restore the health of your Emerald tree.
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How can I water my Emerald tree at different growth stages?
When the Emerald tree is very young, such as when it is in a seedling stage, you will need to give it more water than you would if it were at a mature age. During the early stages of this plant’s life, it is important to keep the soil consistently moist to encourage root development. The same is true for any Emerald tree that you have transplanted to a new growing location. Also, the Emerald tree can develop showy flowers and fruits when you give them the correct care. If your Emerald tree is in a flowering or fruiting phase, you will likely need to give a bit more water than you usually would to support these plant structures.
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How can I water my Emerald tree through the seasons?
The seasonal changes will affect how often you water your Emerald tree. Mainly, during the hottest summer months, you will likely need to increase how much you water this plant, especially if it grows in an area that receives ample sunlight. Strong summer sunlight can cause soil to dry out much faster than usual, meaning that you’ll need to water more frequently. By contrast, your Emerald tree will need much less water during the winter, as it will not be in an active growing phase. During winter, you can get by with watering once every 2 to 3 weeks or sometimes not at all. For those growing this plant indoors, you should be somewhat wary of appliances such as air conditioners, which can cause your plant to dry out more quickly, which also calls for more frequent watering.
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What's the difference between watering my Emerald tree indoors vs outdoors?
In some cases, your Emerald tree may not need any supplemental watering when it grows outside and will survive on rainwater alone. However, if you live in an area of little to no rain, you should water this plant about every two weeks. If you belong to the group of people who live out of this plant's natural hardiness zone, you should grow it indoors. In an indoor setting, you should monitor your plant's soil as it can dry out more quickly when it is in a container or when it is exposed to HVAC units such as air conditioners. Those drying factors will lead you to water this plant a bit more often than if you grew it outdoors.
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Key Facts About Emerald tree

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Attributes of Emerald tree

Lifespan
Perennial
Plant Type
Tree
Planting Time
Winter
Bloom Time
Spring, Summer, Fall
Harvest Time
Spring, Summer, Fall
Plant Height
15 m
Spread
4.5 m to 6 m
Leaf Color
Green
Flower Size
30 cm
Flower Color
White
Yellow
Fruit Color
Red
Black
Stem Color
Brown
Dormancy
Non-dormant
Leaf type
Evergreen
Ideal Temperature
20 - 38 ℃

Symbolism

Life and prosperity, peace and the beginning of new life

Usages

Garden Use
Emerald tree is a popular evergreen tree prized for its narrow shape and green needles. It is commonly used as foundation plants and for natural privacy fences when the pyramid-shaped trees are planted closely together. It is an essential plant in Mediterranean gardens. Plant it with hydrangeas, blue holly, and forest pansies for contrasting colors.

Scientific Classification of Emerald tree

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Common Pests & Diseases About Emerald tree

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Common issues for Emerald tree based on 10 million real cases
Wilting
Wilting Wilting
Wilting
Wilting is a common disease that causes rapid deterioration in the health of Emerald tree plants. It impacts the plant's overall vitality, causes leaves to droop and die, and can lead to the death of the plant if not controlled in time.
Brown blotch
Brown blotch Brown blotch
Brown blotch
Brown spot is a fungal disease which severely affects Emerald tree plants causing leaf spotting, impairing plant health, and aesthetics. Caused by fungi Cochliobolus miyabeanus and Bipolaris oryzae, it poses a high infectivity rate and moderate lethality without intervention.
Leaf rot
Leaf rot Leaf rot
Leaf rot
Leaf rot is a common disease that adversely impacts Emerald tree, causing its lush green foliage to wither. The disease detrimentally affects the plant's overall health and aesthetic appeal, and if not intervened can lead to plant death.
Branch blight
Branch blight Branch blight
Branch blight
Branch blight can cause lignified branches to dry up entirely and die.
Solutions: Inspect trees frequently, and remove any infected branches as soon as possible. Branch blight cannot be cured, so the only treatment is to prune the tree and monitor it carefully for signs of the disease. All affected parts of the tree should be removed, since blight can survive over the winter inside the plant’s tissues. Blight can become systemic in the tree, in which case the entire plant should be removed so it does not remain a host for the pathogen and allow it to spread.
Brown spot
Brown spot Brown spot
Brown spot
This infection can cause brown spots or patches to appear on the plant.
Solutions: In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary. Organic options won’t kill the fungus, but will prevent it from spreading. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
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Wilting
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Wilting Disease on Emerald tree?
What is Wilting Disease on Emerald tree?
Wilting is a common disease that causes rapid deterioration in the health of Emerald tree plants. It impacts the plant's overall vitality, causes leaves to droop and die, and can lead to the death of the plant if not controlled in time.
Symptom Analysis
Symptom Analysis
On Emerald tree, wilt disease manifests in the form of droopy, yellow or brown leaves, despite regular watering. The plant becomes stunted, and leaves may fall prematurely. In severe cases, the entire plant may wilt and die.
What Causes Wilting Disease on Emerald tree?
What Causes Wilting Disease on Emerald tree?
1
Fungal infection
The disease is often caused by a fungal infection which prevents the plant from taking up water and nutrients.
2
Overwatering
Overwatering can cause root rot that leads to wilting. The soil's inability to dry out can suffocate the roots, hampering water absorption.
How to Treat Wilting Disease on Emerald tree?
How to Treat Wilting Disease on Emerald tree?
1
Non pesticide
Reducing watering frequency: Ensuring the plant is not overwatered can allow the soil to dry out and help to control the disease.

Removing infected parts: Pruning and disposing infected parts prevent the disease from spreading to healthy areas.
2
Pesticide
Fungicide application: Apply fungicides specific to the causing fungus, following manufacturer instructions for dilution and application.
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Brown blotch
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Brown blotch Disease on Emerald tree?
What is Brown blotch Disease on Emerald tree?
Brown spot is a fungal disease which severely affects Emerald tree plants causing leaf spotting, impairing plant health, and aesthetics. Caused by fungi Cochliobolus miyabeanus and Bipolaris oryzae, it poses a high infectivity rate and moderate lethality without intervention.
Symptom Analysis
Symptom Analysis
Prolific appearance of brown, dry spots on leaves acting as a significant indicator of the disease. Moreover, browning of stems and withering of leaf tips are common signs. In advanced conditions, defoliation can occur.
What Causes Brown blotch Disease on Emerald tree?
What Causes Brown blotch Disease on Emerald tree?
1
Fungi Cochliobolus miyabeanus
A potent pathogen causing brown spot diseases,
2
Bipolaris oryzae
Another fungi species contributing significantly to disease initiation and progression.
How to Treat Brown blotch Disease on Emerald tree?
How to Treat Brown blotch Disease on Emerald tree?
1
Non pesticide
Pruning: Regular trimming of the infected areas reduces fungal spread,

Improved Airflow: It reduces humidity levels thereby reducing disease manifestation.
2
Pesticide
Fungicide Application: Regular and directed application of compatible fungicides is effective,

Systematic Treatment: Use of systemic pesticides treating the plant from inside, offering longer protection.
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Leaf rot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf rot Disease on Emerald tree?
What is Leaf rot Disease on Emerald tree?
Leaf rot is a common disease that adversely impacts Emerald tree, causing its lush green foliage to wither. The disease detrimentally affects the plant's overall health and aesthetic appeal, and if not intervened can lead to plant death.
Symptom Analysis
Symptom Analysis
Emerald tree's leaves start turning yellow, followed by brown blotches or spots. The leaves, particularly the bottom ones, wilt and eventually fall off. The roots and stems might also become soft and mushy.
What Causes Leaf rot Disease on Emerald tree?
What Causes Leaf rot Disease on Emerald tree?
1
Poor drainage
Overwatering and poor drainage systems often lead to this disease as they create favorable conditions for fungi.
2
Damp and cold weather
It is more prevalent during rainy seasons and in regions with consistently low temperatures.
How to Treat Leaf rot Disease on Emerald tree?
How to Treat Leaf rot Disease on Emerald tree?
1
Non pesticide
Proper Watering: Avoid overwatering and ensure that Emerald tree is planted with good drainage facilities surrounding it.

Removal of Infected Parts: Regularly inspect Emerald tree and promptly remove any infected leaves from the plant and surrounding area.
2
Pesticide
Fungicide: Fungicides containing active ingredients like mancozeb or copper can be effective in treating leaf rot. Apply at the onset of the disease or during damp conditions.
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Branch blight
plant poor
Branch blight
Branch blight can cause lignified branches to dry up entirely and die.
Overview
Overview
"Blight" is an umbrella term used to describe a category of tree diseases caused by fungus or bacteria. Branch blight occurs when fungus attacks the branches and twigs of a tree, resulting in branches slowly dying off.
Branch blight can affect most species of trees to some degree, and it may be called by different names including twig blight or stem blight. It is caused by a variety of fungi which attack branches first, especially immature growth.
Blight usually occurs in warm, humid conditions, so is most common in the spring and summer months. Because specific environmental conditions are required, the frequency of branch blight can vary from year to year. This makes the disease hard to control, as it can spread between trees and affect multiple plants in a short period of time.
In the worst-case scenario, trees can lose significant portions of their foliage and fail to produce fruit. Young or unhealthy trees could die off completely.
Symptom Analysis
Symptom Analysis
The first symptoms of branch blight are that the emerging foliage turns brown or gray at the tips, especially on the smallest branches. Brown spots cover the entire surface of the leaves, eventually causing leaves and stems to shrivel and fall off. Over time, the dying tissue will spread toward the center of the plant. If left untreated, spores from the attacking fungus may appear on dying foliage within 3-4 weeks of the infection.
In some cases, lesions may form at the spot where the twig branches off from the healthy tissue. Branches may display girdling, which is a band of damaged tissue encircling the branch. An untreated tree will eventually lose all of its foliage and die.
Disease Cause
Disease Cause
  • Pathogens on young twigs and foliage cause disease
  • Stressed and unhealthy trees are more susceptible - root injury due to physical or insect damage, infection, or aging can prevent adequate absorption of water and nutrients
  • Extremely wet conditions including sprinkler watering can attract fungus
  • Fungi can be transmitted between nearby trees
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Brown spot
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Brown spot
This infection can cause brown spots or patches to appear on the plant.
Overview
Overview
Discolored spots on the foliage of plants are one of the most common disease problems people observe. These spots are caused by fungal and bacterial diseases, with most infections related to a fungal pathogen.
Brown spot can occurs on all houseplants, flowering ornamentals, vegetable plants, and leaves of trees, bushes, and shrubs. No plants are resistant to it, and the problem is worse in warm, wet environments. It can occur at any point in the life stage as long as leaves are present.
Small brownish spots appear on the foliage and enlarge as the disease progresses. In severe cases, the plant or tree is weakened when the lesions interrupt photosynthesis or cause defoliation.
Symptom Analysis
Symptom Analysis
In most cases, brown spot only affects a small percentage of the whole plant, appearing on a small amount of the leaves. A small infection only puts minor stress on the plant. However, if left untreated and the disease progresses over numerous seasons, it will severely impact the health and productivity of the infected specimen.
  • Sporulation begins (reproduction of the fungal spores), and tiny spots appear on leaves.
  • Placement is often random and scattered as diseases are spread through raindrops.
  • May appear on lower leaves and the interior of the plant where humidity is higher.
  • Brown spots enlarge and grow large enough to touch neighboring spots to form a more prominent blotch.
  • Leaf margins may turn yellow.
  • Tiny black dots (fruiting bodies of the fungi) appear in the dead spots.
  • Blotches grow in size until the entire leaf is brown.
  • The leaf falls off the plant.
Severe Symptoms
  • Partial or complete premature defoliation
  • Reduced growth
  • Increased susceptibility to pests and other diseases
Disease Cause
Disease Cause
Brown spot, or leaf spot, is a common descriptive term given to several diseases affecting the leaves of plants and trees. Around 85% of diseases exhibiting leaf spots are due to fungus or fungus-like organisms. Sometimes brown spot is caused by a bacterial infection, or insect activity with similar symptoms.
When conditions are warm and the leaf surfaces are wet, fungal spores being transported by wind or rain land on the surface and cling to it. They do not rupture the cell walls but grow in the space between the plant plasma membrane and the plant cell wall. As the spores reproduce, they release toxins and enzymes that cause necrotic spots (i.e., dead tissue) on the leaves, allowing the fungi to consume the products released when the cells degrade.
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Distribution of Emerald tree

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Habitat of Emerald tree

Indoor, patio, outdoors in tropical to subtropical regions, areas with a Mediterranean climate
Northern Hemisphere
South Hemisphere

Distribution Map of Emerald tree

Emerald tree is a plant originally native to Southeast Asia and parts of South Asia, where its natural habitat spans a broad region. Beyond its native range, emerald tree has been introduced and cultivated in various tropical and subtropical climates worldwide, appreciated for its ornamental qualities in private and public gardens.
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Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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More Info on Emerald Tree Growth and Care

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Basic Care Guide
Common Pests & Diseases
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Lighting
Partial sun
Emerald tree flourishes when it gets moderate sunlight and can endure both intense and minimal light exposure. From its native environment, it's accustomed to a variety of sun exposures. Lack or excess of sunlight could impact its health, may lead to poor leaf color or hindered growth.
Best Sunlight Practices
Temperature
5 - 43 ℃
Emerald tree grows best in a native environment with a temperature range of 68 to 100.4℉ (20 to 38 ℃). It prefers consistent temperatures and requires occasional adjustments during seasonal changes to maintain a temperature range of 64.4 to 100.4℉ (18 to 38℃).
Temp for Healthy Growth
Transplant
5-6 feet
The perfect time to transplant emerald tree is from late spring to early autumn, as warmer temperatures help in quick establishment. Choose a location with well-draining soil, partial shade, and protection from strong winds. Remember, a gentle touch is key while handling delicate roots!
Transplant Techniques
Overwinter
5 - 43 ℃
Emerald tree thrives in its native sub-tropical Chinese climate, naturally adapting to mild winter conditions. In colder regions, indoor care is key. Dictated by their tropical heredity, these plants, when transported to colder environs, require mindful winter care. For thriving growth, gardeners should consider creating a humid environment, away from draughty windows or direct heat, minimizing watering, and maintaining a temperature above 60°F (15°C).
Winter Techniques
Pruning
Winter
Renowned for its lush foliage and indoor adaptability, emerald tree flourishes with annual pruning. Cut back leggy branches to maintain shape, focusing on reducing overgrowth in late winter before new leaves emerge. Pruning encourages denser growth and revitalizes the plant by removing dead or damaged limbs. This plant responds well to pruning, promoting healthier, more vigorous foliage that enhances its ornamental appeal.
Pruning techniques
Wilting
Wilting is a common disease that causes rapid deterioration in the health of Emerald tree plants. It impacts the plant's overall vitality, causes leaves to droop and die, and can lead to the death of the plant if not controlled in time.
Learn More About the Disease
Brown blotch
Brown spot is a fungal disease which severely affects Emerald tree plants causing leaf spotting, impairing plant health, and aesthetics. Caused by fungi Cochliobolus miyabeanus and Bipolaris oryzae, it poses a high infectivity rate and moderate lethality without intervention.
Learn More About the Disease
Leaf rot
Leaf rot is a common disease that adversely impacts Emerald tree, causing its lush green foliage to wither. The disease detrimentally affects the plant's overall health and aesthetic appeal, and if not intervened can lead to plant death.
Learn More About the Disease
Feng shui direction
East
The emerald tree is widely interpreted to have an affinity with East-facing orientations. This coincides with Feng Shui belief, where East symbolizes family, health, and spring. Thus, aligning the emerald tree with the East could potentially inspire familial harmony and wellness, bearing in mind the subjective nature of Feng Shui perception.
Fengshui Details
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Nigella
Nigella
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Monkshood
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Mexican sunflower
Mexican sunflower
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Mexican oregano
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Maypop
Maypop
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Kou
Kou
Kou (Cordia subcordata) is a tropical tree that is harvested in the wild for its wood that is used to make various woodcrafts. A dark dye is also obtained from the bark. This tree is also useful in agroforestry because of its dense growth and salt tolerance. It was given the common name "Kerosene tree" in Papua New Guinea due to its readiness to burn hard and fast -- even rubbing two sticks of its wood together will start a fire.
Cape jasmine
Cape jasmine
Gardenia jasminoides is an evergreen shrub with unique, glossy evergreen leaves and stunning flowers. The sophisticated, matte white flowers are often used in bouquets. The exceptional beauty of this ornamental plant has made it a popular and highly appreciated plant amongst gardeners and horticulturalists.
Golden pothos
Golden pothos
The golden pothos (Epipremnum aureum) is a popular houseplant that is commonly seen in Australia, Asia, and the West Indies. It goes by many nicknames, including "devil's ivy", because it is so hard to kill and can even grow in low light conditions. Golden pothos has poisonous sap, so it should be kept away from pets and children.
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Emerald tree
Emerald tree
Emerald tree
Emerald tree
Emerald tree
Emerald tree
Emerald tree
Radermachera sinica
Also known as: China doll
A fairly new plant to the houseplant scene, the emerald tree grows in the shape of a tree but remains compact. Radermachera sinica plants thrive in four to five hours of bright indirect light per day with moist but well-draining soil. Despite their finicky nature, Radermachera sinica is becoming increasingly popular as a houseplant.
Planting Time
Planting Time
Winter
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Watering Watering Watering
Pruning Pruning Pruning
Sunlight Sunlight Sunlight
Temperature Temperature Temperature
Fertilizing Fertilizing Fertilizing
What is the best way to water my Emerald tree?
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What should I do if I water my Emerald tree too much or too little?
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How often should I water my Emerald tree?
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How much water does my Emerald tree need?
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How can I tell if i'm watering my Emerald tree enough?
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How can I water my Emerald tree at different growth stages?
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How can I water my Emerald tree through the seasons?
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What's the difference between watering my Emerald tree indoors vs outdoors?
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Key Facts About Emerald tree

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Attributes of Emerald tree

Lifespan
Perennial
Plant Type
Tree
Planting Time
Winter
Bloom Time
Spring, Summer, Fall
Harvest Time
Spring, Summer, Fall
Plant Height
15 m
Spread
4.5 m to 6 m
Leaf Color
Green
Flower Size
30 cm
Flower Color
White
Yellow
Fruit Color
Red
Black
Stem Color
Brown
Dormancy
Non-dormant
Leaf type
Evergreen
Ideal Temperature
20 - 38 ℃
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Symbolism

Life and prosperity, peace and the beginning of new life

Usages

Garden Use
Emerald tree is a popular evergreen tree prized for its narrow shape and green needles. It is commonly used as foundation plants and for natural privacy fences when the pyramid-shaped trees are planted closely together. It is an essential plant in Mediterranean gardens. Plant it with hydrangeas, blue holly, and forest pansies for contrasting colors.

Scientific Classification of Emerald tree

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pests

Common Pests & Diseases About Emerald tree

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Common issues for Emerald tree based on 10 million real cases
Wilting
Wilting Wilting Wilting
Wilting is a common disease that causes rapid deterioration in the health of Emerald tree plants. It impacts the plant's overall vitality, causes leaves to droop and die, and can lead to the death of the plant if not controlled in time.
Learn More About the Wilting more
Brown blotch
Brown blotch Brown blotch Brown blotch
Brown spot is a fungal disease which severely affects Emerald tree plants causing leaf spotting, impairing plant health, and aesthetics. Caused by fungi Cochliobolus miyabeanus and Bipolaris oryzae, it poses a high infectivity rate and moderate lethality without intervention.
Learn More About the Brown blotch more
Leaf rot
Leaf rot Leaf rot Leaf rot
Leaf rot is a common disease that adversely impacts Emerald tree, causing its lush green foliage to wither. The disease detrimentally affects the plant's overall health and aesthetic appeal, and if not intervened can lead to plant death.
Learn More About the Leaf rot more
Branch blight
Branch blight Branch blight Branch blight
Branch blight can cause lignified branches to dry up entirely and die.
Solutions: Inspect trees frequently, and remove any infected branches as soon as possible. Branch blight cannot be cured, so the only treatment is to prune the tree and monitor it carefully for signs of the disease. All affected parts of the tree should be removed, since blight can survive over the winter inside the plant’s tissues. Blight can become systemic in the tree, in which case the entire plant should be removed so it does not remain a host for the pathogen and allow it to spread.
Learn More About the Branch blight more
Brown spot
Brown spot Brown spot Brown spot
This infection can cause brown spots or patches to appear on the plant.
Solutions: In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary. Organic options won’t kill the fungus, but will prevent it from spreading. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Learn More About the Brown spot more
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Wilting
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Wilting Disease on Emerald tree?
What is Wilting Disease on Emerald tree?
Wilting is a common disease that causes rapid deterioration in the health of Emerald tree plants. It impacts the plant's overall vitality, causes leaves to droop and die, and can lead to the death of the plant if not controlled in time.
Symptom Analysis
Symptom Analysis
On Emerald tree, wilt disease manifests in the form of droopy, yellow or brown leaves, despite regular watering. The plant becomes stunted, and leaves may fall prematurely. In severe cases, the entire plant may wilt and die.
What Causes Wilting Disease on Emerald tree?
What Causes Wilting Disease on Emerald tree?
1
Fungal infection
The disease is often caused by a fungal infection which prevents the plant from taking up water and nutrients.
2
Overwatering
Overwatering can cause root rot that leads to wilting. The soil's inability to dry out can suffocate the roots, hampering water absorption.
How to Treat Wilting Disease on Emerald tree?
How to Treat Wilting Disease on Emerald tree?
1
Non pesticide
Reducing watering frequency: Ensuring the plant is not overwatered can allow the soil to dry out and help to control the disease.

Removing infected parts: Pruning and disposing infected parts prevent the disease from spreading to healthy areas.
2
Pesticide
Fungicide application: Apply fungicides specific to the causing fungus, following manufacturer instructions for dilution and application.
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Brown blotch
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Brown blotch Disease on Emerald tree?
What is Brown blotch Disease on Emerald tree?
Brown spot is a fungal disease which severely affects Emerald tree plants causing leaf spotting, impairing plant health, and aesthetics. Caused by fungi Cochliobolus miyabeanus and Bipolaris oryzae, it poses a high infectivity rate and moderate lethality without intervention.
Symptom Analysis
Symptom Analysis
Prolific appearance of brown, dry spots on leaves acting as a significant indicator of the disease. Moreover, browning of stems and withering of leaf tips are common signs. In advanced conditions, defoliation can occur.
What Causes Brown blotch Disease on Emerald tree?
What Causes Brown blotch Disease on Emerald tree?
1
Fungi Cochliobolus miyabeanus
A potent pathogen causing brown spot diseases,
2
Bipolaris oryzae
Another fungi species contributing significantly to disease initiation and progression.
How to Treat Brown blotch Disease on Emerald tree?
How to Treat Brown blotch Disease on Emerald tree?
1
Non pesticide
Pruning: Regular trimming of the infected areas reduces fungal spread,

Improved Airflow: It reduces humidity levels thereby reducing disease manifestation.
2
Pesticide
Fungicide Application: Regular and directed application of compatible fungicides is effective,

Systematic Treatment: Use of systemic pesticides treating the plant from inside, offering longer protection.
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Leaf rot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf rot Disease on Emerald tree?
What is Leaf rot Disease on Emerald tree?
Leaf rot is a common disease that adversely impacts Emerald tree, causing its lush green foliage to wither. The disease detrimentally affects the plant's overall health and aesthetic appeal, and if not intervened can lead to plant death.
Symptom Analysis
Symptom Analysis
Emerald tree's leaves start turning yellow, followed by brown blotches or spots. The leaves, particularly the bottom ones, wilt and eventually fall off. The roots and stems might also become soft and mushy.
What Causes Leaf rot Disease on Emerald tree?
What Causes Leaf rot Disease on Emerald tree?
1
Poor drainage
Overwatering and poor drainage systems often lead to this disease as they create favorable conditions for fungi.
2
Damp and cold weather
It is more prevalent during rainy seasons and in regions with consistently low temperatures.
How to Treat Leaf rot Disease on Emerald tree?
How to Treat Leaf rot Disease on Emerald tree?
1
Non pesticide
Proper Watering: Avoid overwatering and ensure that Emerald tree is planted with good drainage facilities surrounding it.

Removal of Infected Parts: Regularly inspect Emerald tree and promptly remove any infected leaves from the plant and surrounding area.
2
Pesticide
Fungicide: Fungicides containing active ingredients like mancozeb or copper can be effective in treating leaf rot. Apply at the onset of the disease or during damp conditions.
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Branch blight
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Branch blight
Branch blight can cause lignified branches to dry up entirely and die.
Overview
Overview
"Blight" is an umbrella term used to describe a category of tree diseases caused by fungus or bacteria. Branch blight occurs when fungus attacks the branches and twigs of a tree, resulting in branches slowly dying off.
Branch blight can affect most species of trees to some degree, and it may be called by different names including twig blight or stem blight. It is caused by a variety of fungi which attack branches first, especially immature growth.
Blight usually occurs in warm, humid conditions, so is most common in the spring and summer months. Because specific environmental conditions are required, the frequency of branch blight can vary from year to year. This makes the disease hard to control, as it can spread between trees and affect multiple plants in a short period of time.
In the worst-case scenario, trees can lose significant portions of their foliage and fail to produce fruit. Young or unhealthy trees could die off completely.
Symptom Analysis
Symptom Analysis
The first symptoms of branch blight are that the emerging foliage turns brown or gray at the tips, especially on the smallest branches. Brown spots cover the entire surface of the leaves, eventually causing leaves and stems to shrivel and fall off. Over time, the dying tissue will spread toward the center of the plant. If left untreated, spores from the attacking fungus may appear on dying foliage within 3-4 weeks of the infection.
In some cases, lesions may form at the spot where the twig branches off from the healthy tissue. Branches may display girdling, which is a band of damaged tissue encircling the branch. An untreated tree will eventually lose all of its foliage and die.
Disease Cause
Disease Cause
  • Pathogens on young twigs and foliage cause disease
  • Stressed and unhealthy trees are more susceptible - root injury due to physical or insect damage, infection, or aging can prevent adequate absorption of water and nutrients
  • Extremely wet conditions including sprinkler watering can attract fungus
  • Fungi can be transmitted between nearby trees
Solutions
Solutions
  • Inspect trees frequently, and remove any infected branches as soon as possible. Branch blight cannot be cured, so the only treatment is to prune the tree and monitor it carefully for signs of the disease.
  • All affected parts of the tree should be removed, since blight can survive over the winter inside the plant’s tissues.
  • Blight can become systemic in the tree, in which case the entire plant should be removed so it does not remain a host for the pathogen and allow it to spread.
Prevention
Prevention
  • Avoid purchasing trees with dead or dying growth.
  • Sterilize cutting tools frequently when pruning to avoid spreading fungus between plants.
  • Keep trees mulched and watered, especially during dry periods, to prevent stress.
  • Avoid splashing water on the leaves when watering, as wet foliage is attractive to fungi and bacteria.
  • When planting, allow enough room between trees that there will be sufficient air circulation for them to dry out. Crowding trees too close together can increase humidity and allow the fungi to transfer.
  • When conditions are wet and humid, a fungicide can be used on new growth.
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Brown spot
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Brown spot
This infection can cause brown spots or patches to appear on the plant.
Overview
Overview
Discolored spots on the foliage of plants are one of the most common disease problems people observe. These spots are caused by fungal and bacterial diseases, with most infections related to a fungal pathogen.
Brown spot can occurs on all houseplants, flowering ornamentals, vegetable plants, and leaves of trees, bushes, and shrubs. No plants are resistant to it, and the problem is worse in warm, wet environments. It can occur at any point in the life stage as long as leaves are present.
Small brownish spots appear on the foliage and enlarge as the disease progresses. In severe cases, the plant or tree is weakened when the lesions interrupt photosynthesis or cause defoliation.
Symptom Analysis
Symptom Analysis
In most cases, brown spot only affects a small percentage of the whole plant, appearing on a small amount of the leaves. A small infection only puts minor stress on the plant. However, if left untreated and the disease progresses over numerous seasons, it will severely impact the health and productivity of the infected specimen.
  • Sporulation begins (reproduction of the fungal spores), and tiny spots appear on leaves.
  • Placement is often random and scattered as diseases are spread through raindrops.
  • May appear on lower leaves and the interior of the plant where humidity is higher.
  • Brown spots enlarge and grow large enough to touch neighboring spots to form a more prominent blotch.
  • Leaf margins may turn yellow.
  • Tiny black dots (fruiting bodies of the fungi) appear in the dead spots.
  • Blotches grow in size until the entire leaf is brown.
  • The leaf falls off the plant.
Severe Symptoms
  • Partial or complete premature defoliation
  • Reduced growth
  • Increased susceptibility to pests and other diseases
Disease Cause
Disease Cause
Brown spot, or leaf spot, is a common descriptive term given to several diseases affecting the leaves of plants and trees. Around 85% of diseases exhibiting leaf spots are due to fungus or fungus-like organisms. Sometimes brown spot is caused by a bacterial infection, or insect activity with similar symptoms.
When conditions are warm and the leaf surfaces are wet, fungal spores being transported by wind or rain land on the surface and cling to it. They do not rupture the cell walls but grow in the space between the plant plasma membrane and the plant cell wall. As the spores reproduce, they release toxins and enzymes that cause necrotic spots (i.e., dead tissue) on the leaves, allowing the fungi to consume the products released when the cells degrade.
Solutions
Solutions
In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary.
Organic options won’t kill the fungus, but will prevent it from spreading.
  1. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear.
  2. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread.
  3. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Prevention
Prevention
Like many other diseases, it is easier to prevent brown spot than cure it, and this is done through cultural practices.
  • Clear fall leaves from the ground before winter to minimize places where fungi and bacteria can overwinter.
  • Maintain good air movement between plants through proper plant spacing.
  • Increase air circulation through the center of plants through pruning.
  • Thoroughly clean all pruning tools after working with diseased plants.
  • Never dispose of disease plant material in a compost pile.
  • Avoid overhead watering to keep moisture off of the foliage.
  • Keep plants healthy by providing adequate sunlight, water, and fertilizer.
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distribution

Distribution of Emerald tree

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Habitat of Emerald tree

Indoor, patio, outdoors in tropical to subtropical regions, areas with a Mediterranean climate
Northern Hemisphere
South Hemisphere

Distribution Map of Emerald tree

Emerald tree is a plant originally native to Southeast Asia and parts of South Asia, where its natural habitat spans a broad region. Beyond its native range, emerald tree has been introduced and cultivated in various tropical and subtropical climates worldwide, appreciated for its ornamental qualities in private and public gardens.
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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Plants Related to Emerald tree

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Lighting
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Indoor
Indoor
Outdoor
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Requirements
Partial sun
Ideal
About 3-6 hours sunlight
Full sun, Full shade
Tolerance
Above 6 hours sunlight
Watch how sunlight gracefully moves through your garden, and choose spots that provide the perfect balance of light and shade for your plants, ensuring their happiness.
Essentials
Emerald tree flourishes when it gets moderate sunlight and can endure both intense and minimal light exposure. From its native environment, it's accustomed to a variety of sun exposures. Lack or excess of sunlight could impact its health, may lead to poor leaf color or hindered growth.
Preferred
Tolerable
Unsuitable
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Artificial lighting
Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
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Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
1. Choose the right type of artificial light: LED lights are a popular choice for indoor plant lighting because they can be customized to provide the specific wavelengths of light that your plants need.
Full sun plants need 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full shade plants need 10-20W/sq ft.
2. Determine the appropriate distance: Place the light source 12-36 inches above the plant to mimic natural sunlight.
3. Determine the duration: Mimic the length of natural daylight hours for your plant species. most plants need 8-12 hours of light per day.
Important Symptoms
Symptoms of Insufficient Light in %s
Emerald tree is a popular indoor plant that prefers partial sunlight but can handle full sunlight in cooler weather. However, when placed in corners of rooms for extended periods, it may develop symptoms of light deficiency due to insufficient light exposure.
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(Symptom details and solutions)
Faster leaf drop
When plants are exposed to low light conditions, they tend to shed older leaves early to conserve resources. Within a limited time, these resources can be utilized to grow new leaves until the plant's energy reserves are depleted.
Slower or no new growth
Emerald tree enters a survival mode when light conditions are poor, which leads to a halt in leaf production. As a result, the plant's growth becomes delayed or stops altogether.
Leggy or sparse growth
The spaces between leaves or stems of your emerald tree may become longer, resulting in a thin and stretched-out appearance. This can make the plant look sparse and weak, and it may easily break or lean due to its own weight.
Small leaves
New leaves may grow smaller in size compared to the previous ones once they have matured.
Solutions
1. To optimize plant growth, shift them to increasingly sunnier spots each week until they receive 3-6 hours of direct sunlight daily, enabling gradual adaptation to changing light conditions.2. To provide additional light for your plant, consider using artificial light if it's large or not easily movable. Keep a desk or ceiling lamp on for at least 8 hours daily, or invest in professional plant grow lights for ample light.
Symptoms of Excessive light in %s
Emerald tree thrives with partial sun exposure and can tolerate full sun in cooler weather. However, they are more susceptible to sunburn, as they cannot withstand intense sunlight in high-temperature environments.
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Chlorosis
Chlorosis is a condition where the plant's leaves lose their green color and turn yellow. This is due to the breakdown of chlorophyll from excessive sunlight, which negatively affects the plant's ability to photosynthesize.
Sunscald
Sunscald occurs when the plant's leaves or stems are damaged by intense sunlight exposure. It appears as pale, bleached, or necrotic areas on the plant tissue and can reduce the plant's overall health.
Leaf Curling
Leaf curling is a symptom where leaves curl or twist under extreme sunlight conditions. This is a defense mechanism used by the plant to reduce its surface area exposed to sunlight, minimizing water loss and damage.
Wilting
Wilting occurs when a plant loses turgor pressure and its leaves and stems begin to droop. Overexposure to sunlight can cause wilting by increasing the plant's water loss through transpiration, making it difficult for the plant to maintain adequate hydration.
Leaf Scorching
Leaf scorching is a symptom characterized by the appearance of brown, dry, and crispy edges or patches on leaves due to excessive sunlight. This can lead to a reduction in photosynthetic capacity and overall plant health.
Solutions
1. Move your plant to the optimal position where it can receive abundant sunlight but also have some shade. An east-facing window is an ideal choice as the morning sunlight is gentler. This way, your plant can enjoy ample sunlight while reducing the risk of sunburn.2. It is recommended to trim off any completely dehydrated or withered parts of the plant.
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Temperature
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Indoor
Indoor
Outdoor
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Requirements
Ideal
Tolerable
Unsuitable
Just like people, each plant has its own preferences. Learn about your plants' temperature needs and create a comforting environment for them to flourish. As you care for your plants, your bond with them will deepen. Trust your intuition as you learn about their temperature needs, celebrating the journey you share. Lovingly monitor the temperature around your plants and adjust their environment as needed. A thermometer can be your ally in this heartfelt endeavor. Be patient and gentle with yourself as you explore your plants' temperature needs. Cherish your successes, learn from challenges, and nurture your garden with love, creating a haven that reflects the warmth of your care.
Essentials
Emerald tree grows best in a native environment with a temperature range of 68 to 100.4℉ (20 to 38 ℃). It prefers consistent temperatures and requires occasional adjustments during seasonal changes to maintain a temperature range of 64.4 to 100.4℉ (18 to 38℃).
Regional wintering strategies
Emerald tree is extremely heat-loving, and any cold temperatures can cause harm to it. In the autumn, it is recommended to bring outdoor-grown Emerald tree indoors and place it near a bright window, but it should be kept at a certain distance from heaters. Maintaining temperatures above {Suitable_growth_temperature_min} during winter is beneficial for plant growth. Any temperatures approaching {Tolerable_growing_temperature_min} are detrimental to the plant.
Important Symptoms
Symptoms of Low Temperature in Emerald tree
Emerald tree prefers warm temperatures and is not tolerant of low temperatures. It thrives best when the temperature is above {Suitable_growth_temperature_min}. During winter, it should be kept above {Tolerable_growing_temperature_min}. When the temperature falls below {Limit_growth_temperature}, the leaves may lighten in color. After frost damage, the color gradually turns brown or black, and symptoms such as wilting and drooping may occur.
Solutions
Trim off the frost-damaged parts. Immediately move indoors to a warm environment for cold protection. Choose a spot near a south-facing window to place the plant, ensuring ample sunlight. Additionally, avoid placing the plant near heaters or air conditioning vents to prevent excessive dryness in the air.
Symptoms of High Temperature in Emerald tree
During summer, Emerald tree should be kept below {Suitable_growth_temperature_max}. When the temperature exceeds {Tolerable_growing_temperature_max}, the color of the leaves becomes lighter, and the plant becomes more susceptible to sunburn.
Solutions
Trim away the sunburned and dried-up parts. Move the plant to a location that provides shade from the midday and afternoon sun. Water the plant in the morning and evening to keep the soil moist.
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