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Atlas cedar
Atlas cedar
Atlas cedar
Atlas cedar
Atlas cedar
Atlas cedar
Atlas cedar
Cedrus atlantica
Planting Time
Planting Time
Spring
care guide

Care Guide for Atlas cedar

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Watering Care
Watering Care
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Pruning
Pruning
Trim the dead, diseased, overgrown branches in winter.
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Soil Care
Soil Care
Sand, Clay, Loam, Chalky, Acidic, Neutral
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Full sun, Partial sun
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Atlas cedar
Water
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Every week
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Full sun
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Spring
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Questions About Atlas cedar

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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 Atlas cedar?
If you decide to water your Atlas cedar, you will be happy to find that it is a straightforward task. One of the easiest ways to water this tree is by simply turning on your garden hose and using it to soak the soil slowly. Your garden hose is the ideal watering tool to use for mature Atlas cedar trees, as large specimens may need a high volume of water during each watering. However, for smaller trees, you may get by by using a watering can or some other smaller watering tool. Also, you should try to avoid overhead watering as excessive moisture on this plant’s leaves can lead to disease, especially when the tree is young.
Read More more
What should I do if I water my Atlas cedar too much or too little?
At times, overwatering can be the result of poor soils. Mainly, if the soil in which your Atlas cedar grows does not allow water to drain effectively, the plant will likely begin to decline. If this is the case, you should either amend the soil to improve its drainage characteristics or transplant your Atlas cedar to a more favorable growing location. If you grow your Atlas cedar in a pot, this can also mean you may need to repot your plant with looser soils in a container that allows for better drainage. An overwatered plant may also contract diseases, which you should try to treat immediately. For an underwatered Atlas cedar, the remedy is quite simple. Begin watering more often, and soon your plant will bounce back and return to full health. The easiest way to tell if you have overwatered your Atlas cedar is to observe the plant’s foliage. Specifically, looking at the new growth will give the clearest sign of whether this plant suffers from too much moisture. An overwatered Atlas cedar may produce new growth, but that new growth may be discolored or prone to easy breakage. Another sign that the soil for your Atlas cedar is too moist is if you notice standing water or that water is not draining quickly in your plant’s growing area. Underwatered Atlas cedar trees will also have symptoms present in the foliage. In this case, the leaves may become sparse, brown. Usually, Atlas cedar can grow well with rainfulls. If you see such symptoms on your plant, you should consider if there has been too much rain recently or constantly high temperatures, which will help you to make the correct judgment.
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How often should I water my Atlas cedar?
A mature Atlas cedar does not need much water at all. In most instances, this tree will become drought tolerant and survive off of nothing more than rainfall. At most, you’ll need to water this plant about once per week during the hottest months of the year, but during other seasons, you probably won’t need to water it at all. The exception to that rule is if you are dealing with a plant that has been newly planted. If that is the case, you should water regularly to maintain consistent soil moisture and help the roots establish themselves. With that said, the most important thing to remember when watering Atlas cedar is that this species does not tolerate standing water. As such, when in doubt, you should err on the side of not watering your Atlas cedar rather than risking watering it too much.
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How much water does my Atlas cedar need?
The height of summer is one of the few times that you’ll need to water your Atlas cedar. At that time of year, it is typical to give this plant about one inch of water per week. However, that amount can change depending on how much it has rained. If it has rained one inch or more that week, you won’t need to give any water to your Atlas cedar.newly planted Atlas cedar will need more water during the establishment period. Typically, this amounts to watering about once every one to two weeks for the first few growing seasons.
Read More more
How should I water my Atlas cedar through the seasons?
The Atlas cedar tree will need the most water during the summer months when the weather is the hottest. At that time, you should give this plant water about once per week in the absence of rainfall. During other times of the year, this plant will often survive with no water at all. In spring and fall, you might need to provide some water if the weather is exceptionally hot, but this is rare. Unlike many other plants, the Atlas cedar does not enter full dormancy in winter, which means that it will continue growing, during the coldest months. Still, the water needs during winter will remain quite low as the cool temperatures will not cause the soil to dry out quickly..
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How should I water my Atlas cedar at different growth stages?
Young Atlas cedar trees need significantly more water than those that are established. A newly planted tree should receive water at least weekly to ensure that the soil remains moist to facilitate root development. After the first growing season, your Atlas cedar should be well-adapted to its new growing location and should need much less water. At this time, you can begin following the standard instructions for watering this species, providing supplemental water about once per week during summer when it does not rain. Beyond that, there is no other time at which you’ll need to alter your watering habits based on the growth stages of the Atlas cedar tree.
Read More more
What's the difference between watering Atlas cedar indoors and outdoors?
It is far more common to grow the Atlas cedar in an outdoor growing location. However, it is also possible to grow this plant indoors in a container. In that scenario, one gardener often raise the Atlas cedar as the bonsai plant. Whether you grow this plant indoors or outdoors, you can expect its water needs to remain relatively similar. The one difference is that you may need to water an indoor Atlas cedar tree a bit more. Indoor plants won’t have access to rainfall during the summer. Also, indoor areas are often much drier than outdoor growing locations, and the size of the pots limits the water-retainability, which can lead to higher water needs.
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Key Facts About Atlas cedar

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Attributes of Atlas cedar

Lifespan
Perennial
Plant Type
Tree
Planting Time
Spring
Bloom Time
Fall
Harvest Time
Fall, Winter
Plant Height
30 m to 40 m
Spread
90 cm to 3.5 m
Leaf Color
Green
Blue
Silver
Flower Color
Green
Yellow
Fruit Color
Brown
Stem Color
Gray
Silver
Brown
Green
Dormancy
Winter dormancy
Leaf type
Evergreen
Ideal Temperature
20 - 38 ℃
Growth Season
Fall
Growth Rate
Moderate

Symbolism

Usages

Garden Use

Scientific Classification of Atlas cedar

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pests

Common Pests & Diseases About Atlas cedar

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Common issues for Atlas cedar based on 10 million real cases
Dieback
Dieback is a significant disease that seriously affects Atlas cedar's health, leading to its decline and possibly death. The condition primarily involves browning or yellowing of needles, branch death and, in severe cases, full tree mortality.
Fruit withering
Fruit withering Fruit withering
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Solutions: There are a number of appropriate solutions to control fruit withering: Remove any fruit as soon as it shows any signs of infection. Do not compost. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
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.
Aged yellow and dry
Aged yellow and dry Aged yellow and dry
Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Solutions: If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
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Dieback
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Dieback Disease on Atlas cedar?
What is Dieback Disease on Atlas cedar?
Dieback is a significant disease that seriously affects Atlas cedar's health, leading to its decline and possibly death. The condition primarily involves browning or yellowing of needles, branch death and, in severe cases, full tree mortality.
Symptom Analysis
Symptom Analysis
Atlas cedar affected by Dieback are characterized by yellowing or browning needles, especially towards the tree top. This symptom gradually extends down to the lower parts, followed by death of twig tips and branches, leaving the tree bare and sickly.
What Causes Dieback Disease on Atlas cedar?
What Causes Dieback Disease on Atlas cedar?
1
Fungus
Dieback in Atlas cedar is often caused by a variety of fungal pathogens, including Phomopsis juniperovora and Pestalotiopsis species, which invade and degrade vascular tissues.
2
Environmental stress
Prolonged periods of drought, temperature extremes, nutrient deficiencies, and improper soil pH can also facilitate Dieback by impairing Atlas cedar's resistance to pathogens and overall health.
How to Treat Dieback Disease on Atlas cedar?
How to Treat Dieback Disease on Atlas cedar?
1
Non pesticide
Sanitation: Remove infected parts of the tree promptly and appropriately discard to prevent spread.

Environment optimization: Ensure Atlas cedar is growing in appropriate soil and moisture conditions with optimal nutrient levels.
2
Pesticide
Fungicide application: Use registered fungicides, ensuring they target the fungi responsible for Dieback, as a proactive measure or on first signs of the disease.
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Fruit withering
plant poor
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Overview
Overview
Fruit withering is common on many tree fruits, including apples, pears, peaches, cherries, and plums, as well as fruiting shrubs. It is caused by a fungal pathogen and will result in wrinkled and desiccated fruit.
Symptom Analysis
Symptom Analysis
Here are the most common symptoms in the order that they are likely to occur.
  1. Both leaves and blossom on the tips of branches will go brown and wither.
  2. Gray powdery patches will appear on infected leaves and flowers, and this will be most apparent after rain.
  3. Any fruit that does appear will turn wrinkled and fail to develop.
  4. Branch tips begin to die, progressing back to larger branches, causing general deterioration of the tree or plant.
Disease Cause
Disease Cause
The withering is caused by one of two fungal pathogens, one called Monilina laxa and the other called M. fructigen. The spores overwinter on infected plant material and are then spread the following spring by wind, rain, or animal vectors. The problem will start to become noticeable in mid-spring, but will increase in severity as summer progresses and the fungus grows. If not addressed, the disease will intensify and spread to other plants in the vicinity.
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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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Aged yellow and dry
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Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Overview
Overview
Regardless of the type of plant or where it is grown, at some point, it will begin to aged yellow and dry. This is a natural, unavoidable process that happens when the plant has completed all of the steps in its life.
Annual plants go through this process at the end of a single growing season. Perennial plants live for multiple years, if not tens or hundreds of years, but will still ultimately exhibit these symptoms.
Symptom Analysis
Symptom Analysis
When plants have progressed through their natural developmental stages and are nearing the end of their lifecycle, they begin showing signs of decline. Leaves will start to yellow and droop, and over time they turn papery brown and dry.
Once completely dry, the leaves begin to fall from the plant until the entire plant has dried out.
Disease Cause
Disease Cause
At the end of its life, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence or natural aging and death. Cell division stops, and the plant begins catabolizing resources to use in other parts of the plant.
As this happens, the tissues begin yellow and drying until the entire plant is desiccated and perishes.
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distribution

Distribution of Atlas cedar

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Habitat of Atlas cedar

Upper slopes
Northern Hemisphere
South Hemisphere

Distribution Map of Atlas cedar

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Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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More Info on Atlas Cedar Growth and Care

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Basic Care Guide
Common Pests & Diseases
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Lighting
Full sun
Atlas cedar thrives best in strong and extensive light exposure. The natural habitat of atlas cedar is an open environment with abundant sunlight. Inadequate light can lead to stunted growth and poor health. While it can moderately withstand less light saturated conditions, it flourishes optimally in a condition with well-dispersed illumination.
Best Sunlight Practices
Transplant
30-40 feet
The optimum time to transplant atlas cedar is between late winter and early spring (S1-S2), as this facilitates root establishment prior to active growth. Atlas cedar prefers sunny conditions, though it tolerates partial shade. Ensure ample spacing between plants, given atlas cedar's potential size. Treat the transplantation gently to minimize shock to this hardy perennial.
Transplant Techniques
Temperature
0 - 43 ℃
Atlas cedar is native to temperate climatic regions and has temperature requirements ranging from 68 to 100 °F (20 to 38 ℃). To ensure healthy growth, it is recommended to adjust these temperatures with the seasonal shifts.
Temp for Healthy Growth
Dieback
Dieback is a significant disease that seriously affects Atlas cedar's health, leading to its decline and possibly death. The condition primarily involves browning or yellowing of needles, branch death and, in severe cases, full tree mortality.
Read More
Feng shui direction
Southwest
In Feng Shui, the atlas cedar is often seen as a conduit of structural solidity and spiritual wisdom, making it an excellent companion for those seeking balance and serenity. Placing it in Southwest can foster love and enhance relationships, as it correlates with the Earth element which dominates this direction. However, perspectives may vary depending on personal Feng Shui readings.
Fengshui Details
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Plants Related to Atlas cedar

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Redvein abutilon
Redvein abutilon
The redvein abutilon is a popular ornamental plant that is also used in horticulture. The edible flower of this plant is remarkable because its sweet flavor grows stronger as it blooms. An extract of the open flower is used as a headache remedy in some locations. Bees and other pollinators are drawn to this tree because of its sweet nectar.
European nettle tree
European nettle tree
European nettle tree (Celtis australis) is a tall and sturdy deciduous tree - growing from 12 to 21 m in height. It's unique because it blooms with both male and female flowers. Berries appear in summer, ripening to a dark purple in fall. A variety of birds are attracted to the fruit, helping to disperse the seeds. The european nettle tree is considered a great choice to create shade or as a street tree.
Edible banana
Edible banana
Edible banana (Musa acuminata) is an edible evergreen perennial plant native to Southwest Asia. Some people may perceive edible banana to be a tree, but it is a perennial plant. Edible banana is one of the earlier domesticated plants by humans in the history of evolution. The cultivation of these plants for fruit is a major industry. They are also cultivated as ornamental plants.
Wingleaf soapberry
Wingleaf soapberry
Wingleaf soapberry (Sapindus saponaria) is a deciduous tree native to North America and South America. The Latin name Sapindus saponaria means soapy. The fruit from this tree is irritating to the skin and toxic. Caution should be exercised around livestock. The wood from this tree can be made into baskets.
Carruthers' falseface
Carruthers' falseface
Carruthers' falseface (Pseuderanthemum carruthersii) is native to several island nations in the Oceanic region. It is an attractive plant that is often cultivated in ornamental gardens for its foliage and flowers. Its leaves are varying shades of green highlighted with purple and silver, and the flowers are pink and grow in clusters.
Silver-dollar maidenhair fern
Silver-dollar maidenhair fern
Prized among collectors because of its beauty and rarity, the silver-dollar maidenhair fern is endemic to Peru’s Amazonian basin. The fern has large, flat pinnules, black stems and its fronds can reach over two feet in length. Its generously-sized leaves emerge round with a pink blush before maturing to green.
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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Atlas cedar
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Atlas cedar
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Atlas cedar
Atlas cedar
Cedrus atlantica
Planting Time
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Questions About Atlas cedar

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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 Atlas cedar?
more
What should I do if I water my Atlas cedar too much or too little?
more
How often should I water my Atlas cedar?
more
How much water does my Atlas cedar need?
more
How should I water my Atlas cedar through the seasons?
more
How should I water my Atlas cedar at different growth stages?
more
What's the difference between watering Atlas cedar indoors and outdoors?
more
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plant_info

Key Facts About Atlas cedar

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Feedback
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Attributes of Atlas cedar

Lifespan
Perennial
Plant Type
Tree
Planting Time
Spring
Bloom Time
Fall
Harvest Time
Fall, Winter
Plant Height
30 m to 40 m
Spread
90 cm to 3.5 m
Leaf Color
Green
Blue
Silver
Flower Color
Green
Yellow
Fruit Color
Brown
Stem Color
Gray
Silver
Brown
Green
Dormancy
Winter dormancy
Leaf type
Evergreen
Ideal Temperature
20 - 38 ℃
Growth Season
Fall
Growth Rate
Moderate
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Symbolism

Usages

Garden Use

Scientific Classification of Atlas cedar

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pests

Common Pests & Diseases About Atlas cedar

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Feedback
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Common issues for Atlas cedar based on 10 million real cases
Dieback
Dieback is a significant disease that seriously affects Atlas cedar's health, leading to its decline and possibly death. The condition primarily involves browning or yellowing of needles, branch death and, in severe cases, full tree mortality.
Learn More About the Dieback more
Fruit withering
Fruit withering Fruit withering Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Solutions: There are a number of appropriate solutions to control fruit withering: Remove any fruit as soon as it shows any signs of infection. Do not compost. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Learn More About the Fruit withering 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
Aged yellow and dry
Aged yellow and dry Aged yellow and dry Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Solutions: If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Learn More About the Aged yellow and dry more
close
plant poor
Dieback
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Dieback Disease on Atlas cedar?
What is Dieback Disease on Atlas cedar?
Dieback is a significant disease that seriously affects Atlas cedar's health, leading to its decline and possibly death. The condition primarily involves browning or yellowing of needles, branch death and, in severe cases, full tree mortality.
Symptom Analysis
Symptom Analysis
Atlas cedar affected by Dieback are characterized by yellowing or browning needles, especially towards the tree top. This symptom gradually extends down to the lower parts, followed by death of twig tips and branches, leaving the tree bare and sickly.
What Causes Dieback Disease on Atlas cedar?
What Causes Dieback Disease on Atlas cedar?
1
Fungus
Dieback in Atlas cedar is often caused by a variety of fungal pathogens, including Phomopsis juniperovora and Pestalotiopsis species, which invade and degrade vascular tissues.
2
Environmental stress
Prolonged periods of drought, temperature extremes, nutrient deficiencies, and improper soil pH can also facilitate Dieback by impairing Atlas cedar's resistance to pathogens and overall health.
How to Treat Dieback Disease on Atlas cedar?
How to Treat Dieback Disease on Atlas cedar?
1
Non pesticide
Sanitation: Remove infected parts of the tree promptly and appropriately discard to prevent spread.

Environment optimization: Ensure Atlas cedar is growing in appropriate soil and moisture conditions with optimal nutrient levels.
2
Pesticide
Fungicide application: Use registered fungicides, ensuring they target the fungi responsible for Dieback, as a proactive measure or on first signs of the disease.
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unlimited guides at your fingertips...
close
Fruit withering
plant poor
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Overview
Overview
Fruit withering is common on many tree fruits, including apples, pears, peaches, cherries, and plums, as well as fruiting shrubs. It is caused by a fungal pathogen and will result in wrinkled and desiccated fruit.
Symptom Analysis
Symptom Analysis
Here are the most common symptoms in the order that they are likely to occur.
  1. Both leaves and blossom on the tips of branches will go brown and wither.
  2. Gray powdery patches will appear on infected leaves and flowers, and this will be most apparent after rain.
  3. Any fruit that does appear will turn wrinkled and fail to develop.
  4. Branch tips begin to die, progressing back to larger branches, causing general deterioration of the tree or plant.
Disease Cause
Disease Cause
The withering is caused by one of two fungal pathogens, one called Monilina laxa and the other called M. fructigen. The spores overwinter on infected plant material and are then spread the following spring by wind, rain, or animal vectors. The problem will start to become noticeable in mid-spring, but will increase in severity as summer progresses and the fungus grows. If not addressed, the disease will intensify and spread to other plants in the vicinity.
Solutions
Solutions
There are a number of appropriate solutions to control fruit withering:
  1. Remove any fruit as soon as it shows any signs of infection. Do not compost.
  2. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Prevention
Prevention
Preventative measures include:
  1. Ensuring adequate spacing between plants or trees.
  2. Staking plants that are prone to tumbling to prevent moisture or humidity build up.
  3. Prune correctly so that there is adequate air movement and remove any dead or diseased branches that may carry spores.
  4. Practice good plant hygiene by removing fallen material and destroying it as soon as possible.
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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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Aged yellow and dry
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Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Overview
Overview
Regardless of the type of plant or where it is grown, at some point, it will begin to aged yellow and dry. This is a natural, unavoidable process that happens when the plant has completed all of the steps in its life.
Annual plants go through this process at the end of a single growing season. Perennial plants live for multiple years, if not tens or hundreds of years, but will still ultimately exhibit these symptoms.
Symptom Analysis
Symptom Analysis
When plants have progressed through their natural developmental stages and are nearing the end of their lifecycle, they begin showing signs of decline. Leaves will start to yellow and droop, and over time they turn papery brown and dry.
Once completely dry, the leaves begin to fall from the plant until the entire plant has dried out.
Disease Cause
Disease Cause
At the end of its life, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence or natural aging and death. Cell division stops, and the plant begins catabolizing resources to use in other parts of the plant.
As this happens, the tissues begin yellow and drying until the entire plant is desiccated and perishes.
Solutions
Solutions
If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Prevention
Prevention
Unfortunately, there is no way to prevent plants from dying of “old age.” To help prolong their life, and put off symptoms of aged yellow and dry for as long as possible, take care of them by giving them enough water, fertilizing them appropriately, and making sure they get enough sunlight.
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distribution

Distribution of Atlas cedar

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Habitat of Atlas cedar

Upper slopes
Northern Hemisphere
South Hemisphere

Distribution Map of Atlas cedar

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Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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Plants Related to Atlas cedar

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Lighting
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Indoor
Indoor
Outdoor
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Requirements
Full sun
Ideal
Above 6 hours sunlight
Partial sun
Tolerance
About 3-6 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
Atlas cedar thrives best in strong and extensive light exposure. The natural habitat of atlas cedar is an open environment with abundant sunlight. Inadequate light can lead to stunted growth and poor health. While it can moderately withstand less light saturated conditions, it flourishes optimally in a condition with well-dispersed illumination.
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
Atlas cedar thrives in full sunlight but can tolerate partial shade. However, when cultivated indoors during winter, it's often placed in rooms with insufficient lighting, leading to easily noticeable symptoms of light deficiency.
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(Symptom details and solutions)
Small leaves
New leaves may grow smaller in size compared to the previous ones once they have matured.
Leggy or sparse growth
The spaces between leaves or stems of your Atlas cedar 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.
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
Atlas cedar 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.
Lighter-colored new leaves
Insufficient sunlight can cause leaves to develop irregular color patterns or appear pale. This indicates a lack of chlorophyll and essential nutrients.
Solutions
1. To ensure optimal growth, gradually move plants to a sunnier location each week, until they receive at least 6 hours of direct sunlight daily. Use a south-facing window and keep curtains open during the day for maximum sunlight exposure and nutrient accumulation.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
Atlas cedar thrives in full sun exposure but can also tolerate partial shade. They have a remarkable resilience to intense sunlight, and symptoms of sunburn may not be easily visible.
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(Symptom details and solutions)
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
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
Atlas cedar is native to temperate climatic regions and has temperature requirements ranging from 68 to 100 °F (20 to 38 ℃). To ensure healthy growth, it is recommended to adjust these temperatures with the seasonal shifts.
Regional wintering strategies
Atlas cedar is extremely heat-loving, and any cold temperatures can cause harm to it. In the autumn, it is recommended to bring outdoor-grown Atlas cedar 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 Atlas cedar
Atlas cedar 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 Atlas cedar
During summer, Atlas cedar 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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