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Camphorweed
Camphorweed
Camphorweed
Camphorweed
Camphorweed
Camphorweed
Camphorweed
Heterotheca subaxillaris
Camphorweed (Heterotheca subaxillaris) is a fragrant herbaceous perennial plant native to North America and Mexico. The aromatic camphor smell of this plant comes from internal chemicals and gives the plant its name.
Hardiness Zones
Hardiness Zones
7 to 10
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Planting Time
Planting Time
Spring
care guide

Care Guide for Camphorweed

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Watering Care
Watering Care
Average water needs, watering when the top 3 cm of soil has dried out.
Details on Watering Care Watering Care
Soil Care
Soil Care
Slightly acidic
Details on Soil Care Soil Care
Ideal Lighting
Ideal Lighting
Full sun, Partial sun
Details on Sunlight Requirements Ideal Lighting
Ideal Temperature
Ideal Temperature
7 to 10
Details on Temperature Ideal Temperature
Planting Time
Planting Time
Spring
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Camphorweed
Water
Water
Every week
Hardiness Zones
Hardiness Zones
7 to 10
Planting Time
Planting Time
Spring
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Questions About Camphorweed

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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 Camphorweed?
To water Camphorweed, you can use a garden hose with a spray nozzle, a watering can, or just about any other common watering tool. Generally, Camphorweed is not too picky about how they receive their water, as they can live off of rainwater, tap water, or filtered water. Often, you should try not to water this plant from overhead, as doing so can damage the leaves and flowers and may lead to disease as well. At times, the best method for watering this plant is to set up a drip irrigation system. These systems work well for Camphorweed as they apply water evenly and directly to the soil. For one Camphorweed that grows in a container, you can use a similar watering approach while changing the tools you use. To water a container-grown Camphorweed, use a cup, watering can, or your tap to apply water directly to the soil.
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What should I do if I water my Camphorweed too much or too little?
The remedy for underwatering Camphorweed is somewhat obvious. When you notice that your plant lacks moisture, simply begin watering it on a more regular basis. The issue of overwatering can be a much more dire situation, especially if you fail to notice it early. When your Camphorweed is overwatered, it may contract diseases that lead to its decline and death. The best way to prevent this outcome is to choose a proper growing location, one that receives plenty of sunlight to help dry the soil and has good enough drainage to allow excess water to drain rather than pooling and causing waterlogged soils. If you overwater your Camphorweed that lives in a pot, you may need to consider changing it to a new pot. Your previous container may not have contained soil with good drainage or may not have had sufficient drainage holes. As you repot your overwatered Camphorweed, make sure to add loose soils and to use a pot that drains efficiently.
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How often should I water my Camphorweed?
Camphorweed needs water regularly throughout the growing season. Beginning in spring, you should plan to water this plant about once per week. As the season presses on and grows warmer, you may need to increase your watering rate to about two to three times per week. Exceeding at this rate can be detrimental to your Camphorweed. With that said, you should also ensure that the soil in which your Camphorweed grows remains relatively moist but not wet, regardless of how often you must water to make that the case. Watering Camphorweed that lives in a pot is a bit different. Generally, you'll need to increase your watering frequency, as the soil in a pot can heat up and dry out a bit faster than ground soil. As such, you should plan to water a container-grown Camphorweed a few times per week in most cases, versus just once per week for an in-ground plant.
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How much water does my Camphorweed need?
There are a few different ways you can go about determining how much water to give to your Camphorweed. Some gardeners choose to pick their water volume based on feeling the soil for moisture. That method suggests that you should water until you feel that the first six inches of soil have become moist. Alternatively, you can use a set measurement to determine how much to water your Camphorweed. Typically, you should give your Camphorweed about two gallons of water per week, depending on how hot it is and how quickly the soil becomes dry. However, following strict guidelines like that can lead to overwatering if your plant requires less than two gallons per week for whatever reason. When growing Camphorweed in a container, you will need to use a different method to determine how much water to supply. Typically, you should give enough water to moisten all of the layers of soil that have become dry. To test if that is the case, you can simply stick your finger in the soil to feel for moisture. You can also water the soil until you notice a slight trickle of excess water exiting the drainage holes of your pot.
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How can I tell if i'm watering my Camphorweed enough?
It can be somewhat difficult to avoid overwatering your Camphorweed. On the one hand, these plants have relatively deep roots that require you to moisten the soil weekly. On the other hand, Camphorweed are plants that are incredibly susceptible to root rot. Along with root rot, your Camphorweed may also experience browning as a result of overwatering. Underwatering is far less likely for your Camphorweed as these plants can survive for a while in the absence of supplemental watering. However, if you go too long without giving this plant water, it will likely begin to wilt. You may also notice dry leaves.
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How should I water my Camphorweed through the seasons?
You can expect your Camphorweed’s water needs to increase as the season moves on. During spring, you should water about once per week. Then, as the summer heat arrives, you will likely need to give a bit more water to your Camphorweed, at times increasing to about three times per week. This is especially true of Camphorweed that grow in containers, as the soil in a container is far more likely to dry out faster than ground soil when the weather is warm. In autumn, while your Camphorweed is still in bloom, it may need a bit less water as the temperature has likely declined, and the sun is no longer as strong as it was in summer.
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How should I water my Camphorweed at different growth stages?
Camphorweed will move through several different growth stages throughout the year, some of which may require more water than others. For example, you will probably start your Camphorweed as a seed. While the seed germinates, you should plant to give more water than your Camphorweed will need later in life, watering often enough to maintain consistent soil moisture. After a few weeks, your Camphorweed will grow above the soil and may need slightly less water than at the seedling phase. Then, once this plant is mature, you can begin to use the regular watering frequency of about once per week. As flower development takes place, you may need to give slightly more water to aid the process.
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What's the difference between watering Camphorweed indoors and outdoors?
There are several reasons why most Camphorweed grow outdoors rather than indoors. The first is that these plants typically grow to tall. The second reason is that Camphorweed needs more daily sunlight than most indoor growing locations can provide. If you are able to provide a suitable indoor growing location, you may find that you need to give your Camphorweed water a bit more often than you would in an outdoor growing location. Part of the reason for this is that indoor growing locations tend to be a lot drier than outdoor ones due to HVAC units. The other reason for this is that soil in containers can dry out relatively quickly as well compared to soil in the ground.
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Key Facts About Camphorweed

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Attributes of Camphorweed

Lifespan
Annual
Plant Type
Herb
Planting Time
Spring
Bloom Time
Summer, Fall
Harvest Time
All year around
Plant Height
2 m
Spread
60 cm
Leaf Color
Green
Flower Size
2.5 cm to 5 cm
Flower Color
Yellow
Stem Color
Green
Dormancy
Winter dormancy
Leaf type
Deciduous
Ideal Temperature
20 - 35 ℃
Pollinators
Butterflies
Benefits to Pollinating Insects
Adult food, Larval food

Usages

Garden Use
Its occasional weedy appearance limits camphorweed’s use in the garden, but it is still cultivated in warmer climates due to its ability to withstand harsh growing conditions. Grown primarily for its flowers, which attract bees and butterflies, it is often planted in groupings to maximize the effect of the bright-colored spring and summer blooms.

Scientific Classification of Camphorweed

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Common Pests & Diseases About Camphorweed

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Common issues for Camphorweed based on 10 million real cases
Sap-sucking insects
Sap-sucking insects Sap-sucking insects
Sap-sucking insects
Sap-sucking insects can create dense clusters of small yellow or white spots on the leaves.
Solutions: Sap-sucking insects can be hard to spot, as they are often small and attach to the undersides of plant leaves. If you see signs of an infestation, follow these steps to eradicate it. Hand-pick bugs and remove eggs: Inspect your plants for insects and drop any you find in a container of soapy water. Look carefully at the undersides of plant leaves and squish any egg clusters you find. Use Insecticide: Targeted spraying can take out sap-sucking insects. Small infestations can be controlled with insecticidal soap, though larger outbreaks might require a stronger spray. Introduce natural predators: Many insects, including ladybugs and praying mantises, love to feast on sap-suckers. You can purchase them at garden stores and release them near infected plants, or encourage wild ones by creating habitat space.
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.
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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Sap-sucking insects
plant poor
Sap-sucking insects
Sap-sucking insects can create dense clusters of small yellow or white spots on the leaves.
Symptom Analysis
Symptom Analysis
Your plant has developed tiny yellowish spots scattered across the leaves that look like mold or mildew. If these marks won't wipe off, they are likely caused by sap-sucking insects like aphids, squash bugs, scale bugs, leafhoppers, whiteflies, mites, mealybugs, and more.
Each of these pests uses mouthparts to pierce leaf tissues and suck the sap. uses mouthparts to pierce leaf tissues and suck the sap. Signs of damage are difficult to spot at first, but a large infestation can quickly compromise the whole plant. You're most likely to see sap-sucking insects during the hottest months because plants make easier targets when already weakened from heat or drought.
Though sap-sucking insects are unlikely to kill your plant on their own, they can severely weaken it and make it more susceptible to disease. They may also spread viruses from one plant to another as they feed.
Solutions
Solutions
Sap-sucking insects can be hard to spot, as they are often small and attach to the undersides of plant leaves. If you see signs of an infestation, follow these steps to eradicate it.
  1. Hand-pick bugs and remove eggs: Inspect your plants for insects and drop any you find in a container of soapy water. Look carefully at the undersides of plant leaves and squish any egg clusters you find.
  2. Use Insecticide: Targeted spraying can take out sap-sucking insects. Small infestations can be controlled with insecticidal soap, though larger outbreaks might require a stronger spray.
  3. Introduce natural predators: Many insects, including ladybugs and praying mantises, love to feast on sap-suckers. You can purchase them at garden stores and release them near infected plants, or encourage wild ones by creating habitat space.
Prevention
Prevention
Healthy plants are less likely to suffer from sap-sucker attacks. Keep them fortified with fertilizer and the right amounts of water and sunlight. Plants that receive excess nitrogen are also more susceptible to attack, so don’t overfertilize. You should also remove weeds and tall grasses surrounding your outdoor plants so as not to create habitat space for the pests.
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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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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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weed

Weed Control About Camphorweed

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Weeds
Camphorweed is native to North America and Mexico. This plant will root in roadsides or waste grounds in USDA zones 9A to 10B. It has been recorded as an invasive weed in four countries: Japan, Israel, Argentina, and Lebanon. It is also considered a noxious weed in the U.S. state of Arizona. In Israel, camphorweed has infested local habitats and outcompetes native plants in their own environment. Cattle refuse to graze on it because of its camphor-like odor. It seeds in large amounts and can consequently spread quickly. Camphorweed is best controlled through physical removal.
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distribution

Distribution of Camphorweed

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Habitat of Camphorweed

Prairies, waste places, roadsides
Northern Hemisphere
South Hemisphere

Distribution Map of Camphorweed

Camphorweed, originally native to the warm temperate and tropical zones of North America, has a natural range extending over significant parts of the continent. The plant has been introduced and now thrives in regions with similar climates. Additionally, camphorweed is not just found in the wild but also cultivated in various regions where its adaptability allows it to grow successfully.
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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More Info on Camphorweed Growth and Care

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Basic Care Guide
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Lighting
Full sun
Camphorweed thrives in areas exposed to a substantial amount of daylong rays. It can also survive and stay healthy if the rays are fairly restricted. Yet, its place of origin is in an environment rich in solar radiation. Too much or too little light may adversely affect its growth and health.
Best Sunlight Practices
Transplant
2-3 feet
The perfect time to transplant camphorweed is during late winter to early spring (S2-S4), as the nascent temperatures create a favorable setting for growth. Choose a spot with ample sunlight and good soil drainage. Extra transplant tip: water moderately for the best survival chances.
Transplant Techniques
Temperature
0 - 41 ℃
Camphorweed is indigenous to locations with a moderate climate range of 68 to 95 °F (20 to 35 ℃). It shows clear preference for such temperatures and altering habitat temperature beyond its comfort zone could hinder its growth.
Temp for Healthy Growth
Propagation
Spring
Camphorweed can be propagated through sowing seeds during spring. Its propagation process is relatively simple. Look for signs like germination and seedling growth as indicators of successful propagation. Ensure optimal soil and humidity conditions for best results.
Propagation Techniques
Feng shui direction
Southwest
The camphorweed plant can introduce a unique vibrancy to a Southwest-facing direction. Such placement harnesses the plant's distinctive energies to maintain environmental harmony, although the interpretation varies. Care should be taken to balance this with existing elements of the space - a principle central to Feng Shui practice.
Fengshui Details
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Plants Related to Camphorweed

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Pampas grass
Pampas grass
Pampas grass is a tall grass that grows in dense clumps. Pampas grass can reach heights of 3 m and has slender, long leaves that are 1.02 to 2 m long. This grass is fast-growing and in the right circumstances can become invasive.
Annual bluegrass
Annual bluegrass
Annual bluegrass (Poa annua) is a low-growing grass native to Europe and Asia. Poa annua is known commonly as both annual bluegrass and poa. The Latin name is derived from the Greek word poa, which is a type of fodder grass.
Pot marigold
Pot marigold
The pot marigold is a herbaceous perennial plant often recognized by its thick, orange-yellow blooms with numerous petals. Flowers of the pot marigold have a long history of table use. They are often served in salads or as a decoration. The flowers can also be made into a similarly-colored dye for foods, textiles, or cosmetic products.
Buffalo grass
Buffalo grass
Buffalo grass (Stenotaphrum secundatum) is a plant species also known as St. Augustine grass. Buffalo grass is a common lawn grass that is as popular as bermuda grass. Buffalo grass thrives in the Mediterranean region and tropical climates. It is common in the southern United States, Hawaii, South Africa and New Zealand.
Purpletop vervain
Purpletop vervain
Purpletop vervain (Verbena bonariensis) is a flowering plant native to South America. In autumn, purpletop vervain loses its leaves. The lavender flowers on this species have a sweet scent.
Small-leaf spiderwort
Small-leaf spiderwort
Tradescantia fluminensis is a ground cover plant that is most commonly found as a houseplant. This plant has oval leaves that are dark green and glossy. It will root anywhere a node is on the surface, which earns it some of its other common names, like wandering Willie and wandering gypsy.
Poison ivy
Poison ivy
In pop culture, poison ivy is a symbol of an obnoxious weed because, despite its unthreatening looks, it gives a highly unpleasant contact rash to the unfortunate person who touches it. Still, it is commonly eaten by many animals, and the seeds are a favorite with birds. The leaves turn bright red in fall. Its sister species, Western poison ivy (Toxicodendron rydbergii), is not considered to be invasive in the United States, but is noxious in Australia and New Zealand.
Pokeweed
Pokeweed
Although its berries look juicy and tempting, the fruits and the root of pokeweed are toxic and should not be eaten. Pokeweed is considered a pest species by farmers but is nevertheless often grown as an ornamental plant. Its berries can be made into pokeberry ink as well.
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Camphorweed
Camphorweed
Camphorweed
Camphorweed
Camphorweed
Camphorweed
Camphorweed
Heterotheca subaxillaris
Camphorweed (Heterotheca subaxillaris) is a fragrant herbaceous perennial plant native to North America and Mexico. The aromatic camphor smell of this plant comes from internal chemicals and gives the plant its name.
Hardiness Zones
Hardiness Zones
7 to 10
more
Planting Time
Planting Time
Spring
care guide

Care Guide for Camphorweed

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Questions About Camphorweed

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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 Camphorweed?
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What should I do if I water my Camphorweed too much or too little?
more
How often should I water my Camphorweed?
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How much water does my Camphorweed need?
more
How can I tell if i'm watering my Camphorweed enough?
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How should I water my Camphorweed through the seasons?
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How should I water my Camphorweed at different growth stages?
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What's the difference between watering Camphorweed indoors and outdoors?
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Key Facts About Camphorweed

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Attributes of Camphorweed

Lifespan
Annual
Plant Type
Herb
Planting Time
Spring
Bloom Time
Summer, Fall
Harvest Time
All year around
Plant Height
2 m
Spread
60 cm
Leaf Color
Green
Flower Size
2.5 cm to 5 cm
Flower Color
Yellow
Stem Color
Green
Dormancy
Winter dormancy
Leaf type
Deciduous
Ideal Temperature
20 - 35 ℃
Pollinators
Butterflies
Benefits to Pollinating Insects
Adult food, Larval food
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Usages

Garden Use
Its occasional weedy appearance limits camphorweed’s use in the garden, but it is still cultivated in warmer climates due to its ability to withstand harsh growing conditions. Grown primarily for its flowers, which attract bees and butterflies, it is often planted in groupings to maximize the effect of the bright-colored spring and summer blooms.

Scientific Classification of Camphorweed

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Common Pests & Diseases About Camphorweed

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Common issues for Camphorweed based on 10 million real cases
Sap-sucking insects
Sap-sucking insects Sap-sucking insects Sap-sucking insects
Sap-sucking insects can create dense clusters of small yellow or white spots on the leaves.
Solutions: Sap-sucking insects can be hard to spot, as they are often small and attach to the undersides of plant leaves. If you see signs of an infestation, follow these steps to eradicate it. Hand-pick bugs and remove eggs: Inspect your plants for insects and drop any you find in a container of soapy water. Look carefully at the undersides of plant leaves and squish any egg clusters you find. Use Insecticide: Targeted spraying can take out sap-sucking insects. Small infestations can be controlled with insecticidal soap, though larger outbreaks might require a stronger spray. Introduce natural predators: Many insects, including ladybugs and praying mantises, love to feast on sap-suckers. You can purchase them at garden stores and release them near infected plants, or encourage wild ones by creating habitat space.
Learn More About the Sap-sucking insects 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
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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Sap-sucking insects
plant poor
Sap-sucking insects
Sap-sucking insects can create dense clusters of small yellow or white spots on the leaves.
Symptom Analysis
Symptom Analysis
Your plant has developed tiny yellowish spots scattered across the leaves that look like mold or mildew. If these marks won't wipe off, they are likely caused by sap-sucking insects like aphids, squash bugs, scale bugs, leafhoppers, whiteflies, mites, mealybugs, and more.
Each of these pests uses mouthparts to pierce leaf tissues and suck the sap. uses mouthparts to pierce leaf tissues and suck the sap. Signs of damage are difficult to spot at first, but a large infestation can quickly compromise the whole plant. You're most likely to see sap-sucking insects during the hottest months because plants make easier targets when already weakened from heat or drought.
Though sap-sucking insects are unlikely to kill your plant on their own, they can severely weaken it and make it more susceptible to disease. They may also spread viruses from one plant to another as they feed.
Solutions
Solutions
Sap-sucking insects can be hard to spot, as they are often small and attach to the undersides of plant leaves. If you see signs of an infestation, follow these steps to eradicate it.
  1. Hand-pick bugs and remove eggs: Inspect your plants for insects and drop any you find in a container of soapy water. Look carefully at the undersides of plant leaves and squish any egg clusters you find.
  2. Use Insecticide: Targeted spraying can take out sap-sucking insects. Small infestations can be controlled with insecticidal soap, though larger outbreaks might require a stronger spray.
  3. Introduce natural predators: Many insects, including ladybugs and praying mantises, love to feast on sap-suckers. You can purchase them at garden stores and release them near infected plants, or encourage wild ones by creating habitat space.
Prevention
Prevention
Healthy plants are less likely to suffer from sap-sucker attacks. Keep them fortified with fertilizer and the right amounts of water and sunlight. Plants that receive excess nitrogen are also more susceptible to attack, so don’t overfertilize. You should also remove weeds and tall grasses surrounding your outdoor plants so as not to create habitat space for the pests.
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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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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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weed

Weed Control About Camphorweed

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Weeds
Camphorweed is native to North America and Mexico. This plant will root in roadsides or waste grounds in USDA zones 9A to 10B. It has been recorded as an invasive weed in four countries: Japan, Israel, Argentina, and Lebanon. It is also considered a noxious weed in the U.S. state of Arizona. In Israel, camphorweed has infested local habitats and outcompetes native plants in their own environment. Cattle refuse to graze on it because of its camphor-like odor. It seeds in large amounts and can consequently spread quickly. Camphorweed is best controlled through physical removal.
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distribution

Distribution of Camphorweed

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Habitat of Camphorweed

Prairies, waste places, roadsides
Northern Hemisphere
South Hemisphere

Distribution Map of Camphorweed

Camphorweed, originally native to the warm temperate and tropical zones of North America, has a natural range extending over significant parts of the continent. The plant has been introduced and now thrives in regions with similar climates. Additionally, camphorweed is not just found in the wild but also cultivated in various regions where its adaptability allows it to grow successfully.
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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Plants Related to Camphorweed

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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
Camphorweed thrives in areas exposed to a substantial amount of daylong rays. It can also survive and stay healthy if the rays are fairly restricted. Yet, its place of origin is in an environment rich in solar radiation. Too much or too little light may adversely affect its growth and health.
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
Camphorweed, a plant that thrives in full sunlight, is commonly grown outdoors with ample sunlight. When cultivated indoors with inadequate light, it may exhibit subtle symptoms of light deficiency.
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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 camphorweed 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
Camphorweed 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
Camphorweed thrives in full sun exposure and can tolerate intense sunlight. With their remarkable resilience, symptoms of sunburn may not be easily visible, as they rarely suffer from it.
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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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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
Camphorweed is indigenous to locations with a moderate climate range of 68 to 95 °F (20 to 35 ℃). It shows clear preference for such temperatures and altering habitat temperature beyond its comfort zone could hinder its growth.
Regional wintering strategies
Camphorweed has strong cold resistance, so special frost protection measures are usually not necessary during winter. However, if the winter temperatures are expected to drop below {Limit_growth_temperature}, it is still important to provide cold protection. This can be achieved by covering the plant with materials such as soil or straw. Before the first freeze in autumn, it is recommended to water the plant abundantly, ensuring the soil remains moist and enters a frozen state. This helps prevent drought and water scarcity for the plant during winter and early spring.
Important Symptoms
Symptoms of Low Temperature in Camphorweed
Camphorweed is cold-tolerant and 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}, although there may not be any noticeable changes during winter, there may be a decrease in sprouting or even no sprouting during springtime.
Solutions
In spring, remove any parts that have failed to sprout.
Symptoms of High Temperature in Camphorweed
During summer, Camphorweed should be kept below {Suitable_growth_temperature_max}. When the temperature exceeds {Tolerable_growing_temperature_max}, the leaves of the plant may become lighter in color, prone to curling, susceptible to sunburn, and in severe cases, the entire plant may wilt and become dry.
Solutions
Trim away the sunburned and dried-up parts. Move the plant to a location that provides shade from the midday and afternoon sun, or use a shade cloth to create shade. Water the plant in the morning and evening to keep the soil moist.
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