Disease Problems
| Name | Organism | Symptom | Management |
| Anthracnose | Collectrotrichum and Gloeosporium fungi | Leaf tips turn yellow, then brown. Entir ... | Remove infected leaves and Avoid misting ... |
| Leaf spots | Fungi and bacteria | Fungal: Leaf spots appear brown with a y ... | Remove infected leaves, Increase air cir ... |
| Powdery mildew | Fungus Oidium species | White powdery fungal growth on foliage; ... | Increase air circulation around plant; A ... |
| Root and stem rots | Botrytis, Pythium, Alternaria, Phytophth ... | Brown to black soft or punky roots; Grid ... | Avoid overwatering; Remove infected plan ... |
| Symptom | Common Cause |
|---|---|
| Small leaves | Soil remains either too wet or too dry |
| Weak growth | Incorrect lighting Root system is damaged from being kept too wet |
| Wilting plant | Soil remains either too wet or too dry |
| General defoliation | Overwatering Poor lighting conditions Injured by low temperatures |
What problems do plants face?
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- Avoiding dehydration. Plants on land would have developed roots to acquire water from the soil. ...
- Disease. Bacteria and viruses would have better opportunities for infection on land than in water.
- Competition. ...
- Reproduction. ...
What's wrong with my plant?
What’s Wrong with My Plant?
- Environmental Problems. Light – Environmental issues indoors often include problems with light. ...
- Common Houseplant Diseases. As previously mentioned, improper watering is the most common reason that houseplants fail to thrive.
- Pests That Affect Indoor Plants. ...
What are the signs of plant disease?
Viral disease symptoms:
- Mosaic leaf pattern
- Crinkled leaves
- Yellowed leaves
- Plant stunting
How to fix your Schefflera plant problems?
- Your plant is in low light conditions. ...
- You have been watering on a schedule. ...
- The plant pot has few or no drainage holes. ...
- You sometimes forget to empty the drip tray or outer decorative pot after watering. ...
- The soil drains poorly. ...
- Your plant is in a pot that is too large. ...
How do you identify plant problems?
Signs and symptoms in leaves If leaves are not perfectly formed and healthy, there is some sort of problem, particularly if they have spots, irregular mottling, if they become yellow or dry, or if they are stunted or appear distorted, in which case they may have some sort of disease.
What are some disadvantages of plants?
Disadvantages & Drawbacks Indoor PlantsAllergies. NASA studied the purifying quality of houseplants and found "research has shown that many common houseplants can clean air of toxic gases." ... Toxic Black Mold. The majority of houseplants require a good deal of water and are moist most of the time. ... Pests.
What are the common plant diseases?
Common Plant DiseasesBlack Spot.Other Leaf Spots.Powdery Mildew.Downy Mildew.Blight.Canker.
How are plants damaged?
Definition and Importance. Insects damage plants in many ways, but the most common type of damage is the removal of plant tissues, as in the familiar examples of caterpillars, beetles, and grasshoppers whose feeding creates noticeable holes or even the wholesale removal of leaves, fruits, or other plant parts.
Can plants be harmful to the environment?
They can have a major impact on the area's biodiversity and ecology. For example, some invasive plants may outcompete native species, while others may affect sedimentation processes and the chemical composition of the soil. Some invasive plants are weeds and cause problems in the agricultural sector.
What are the disadvantages of trees?
1)Trees can intercept debris which may otherwise become a flying missile. 2)Poorly chosen trees or a tree in the wrong place as up against a building give other trees a bad name. 3)Fallen trees may affect power lines etc, so check the height of the trees being planted. 4)Fallen trees incur clean-up costs.
What are 5 diseases that affect plants?
bacterialaster yellows.bacterial wilt.blight. fire blight. rice bacterial blight.canker.crown gall.rot. basal rot.scab.
What are the 10 common plant diseases?
Here Are 10 Common Plant Diseases In North America:Blight. Blight is easily recognizable by the sudden death of all plant tissue including leaves, stems, and flowers. ... Canker. Canker is identifiable by a dead area on the stem that is often discolored.Gall. ... Leaf Curl. ... Leaf Spot. ... Powdery Mildew. ... Root Rot. ... Wilt.More items...•
What factors affect plants?
Environmental factors that affect plant growth include light, temperature, water, humidity and nutrition. It's important to understand how these factors affect plant growth and development.
What are things plants need?
All plants need space to grow, the right temperature, light, water, air, nutrients, and time.
How do frost damage plants?
Frost kills plants, as the water inside the plant cells expands when it freezes. This breaks the cell walls, which means they can no longer carry the plant's nutrient juices (sap), causing it to die.
What happens when plants freeze?
Freeze damage to plant tissue can be detrimental to plants. Light frost typically doesn't cause major damage, with the exception of very tender plants, but a hard frost freezes water in plant cells, causing dehydration and damage to cell walls. Cold injury is more likely to occur as the sun comes up.
Cucumber Mosaic Virus: A Tricky Viral Disease
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Pyrethrin Spray: An Organic Pesticide With History
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Citrus Canker: A Widespread Bacterial Problem
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What is the disease that attacks the leaves and fruit of apples and crabapples?
What is it? A common fungal infection that attacks the leaves and fruit of apples and crabapples. Initially an aesthetic problem, the untreated fungus can weaken a tree over time.
What are sap sucking pests?
What are they? Sap-sucking pests that attach themselves to leaves, fruits and branches of trees, shrubs and other perennials. Many species cover themselves in waxy or wooly substances as a protective cover. Unless the infestation is pervasive, they can be difficult to see.
What is a fungal disease?
What is it? A fungal disease that is used to describe a variety of diseases that cause foliar damage, and in extreme cases defoliation, in trees. It thrives in warm, moist conditions and because it can survive on plant debris, it spreads easily.
What are woodboring insects?
What are they? Wood-boring insects like certain beetles or moths lay their eggs on or inside trees. The larvae feed by tunneling through the bark, sapwood and heartwood of the tree, destroying water- and sap-conducting tissues.
What does it mean when you see a spot on your leaves?
Take heart in knowing that growing is like life: unpredictable, never perfect, an exercise in futility trying to control it…but beautiful and so worthwhile when all’s said and done. So, let’s get busy doing what we love and taking things as they come.
What is powdery mildew?
What is it? A distinctive fungal disease that is fairly easy to identify by its white powdery residue on leaves and stems. Powdery mildew thrives in high humidity and although it’s generally not fatal to a plant, it can spread up and down the length of the plant and decrease blooms/yield.
Why do my plants turn yellow?
Pathogens, which can live in the soil for years, make their way into the plant through the roots, eventually clogging the vascular system and causing branches to wilt suddenly and foliage to turn yellow and fall off prematurely. It can also lead to stunted growth.
What causes a seedling to collapse?
Problem: Damping-off disease, caused by several soil-borne fungi, is most problematic in wet, humid conditions. It infects seedlings and causes them to collapse and decay. It’s often found in greenhouses, but can occur outdoors as well.
What causes powdery mildew on leaves?
Problem: Powdery mildew leaves a telltale white dusty coating on leaves, stems and flowers. Caused by a fungus, it affects a number of plants, including lilacs, apples, grapes, cucumbers, peas, phlox, daisies and roses.
What causes verticillium to wilt?
Pathogens, which can live in the soil for years, make their way into the plant through the roots, eventually clogging the vascular system and causing branches to wilt suddenly and foliage to turn yellow and fall off prematurely. It can also lead to stunted growth.
What causes wilted leaves on asparagus?
Problem: Caused by a soil-borne fungus, fusarium wilt affects ornamental and edible plants, including dianthus, beans, tomatoes, peas and asparagus. The disease causes wilted leaves and stunted plants, as well as root rot and sometimes blackened stem rot. It’s especially active in hot summer temperatures.
What is the problem with rust on roses?
Problem: Rust, another fungal disease, is easy to spot because it forms rusty spots on leaves and sometimes stems. The spots eventually progress from reddish orange to black. There are many types of rust that can attack plants such as hollyhocks, roses, daylilies and tomatoes.
How to get rid of powdery mildew in my garden?
Avoid overhead watering at night; mid-morning is preferred to allow foliage to dry before evening. Commercial fungicides are available for powdery mildew, or you can spray with a solution of one tsp. baking soda and one quart of water as recommended by George “Doc” and Katy Abraham, authors of The Green Thumb Garden Handbook.
Why are my plants' leaves brown?
Brown Leaves. Just as overwatering can harm your plant, keeping it too dry can also lead to various problems. Signs that you’re not watering your plant enough include: wilting, drooping, or brown leaves. This is particularly common in large indoor plants, as they require more water than your average houseplant.
Why are my plants yellowing?
Overwatering is quite common and can result in yellowing leaves and root rot, which means the plant will not be able to absorb any more water.
How to stop a plant from spotting in the sun?
The solution is simple — remove the plant from direct sunlight and place it in a spot where the sun doesn’t directly hit the foliage. Remove the affected areas and monitor your plant closely to ensure it’s not taking direct heat from the sun. 11. Overwatering.
What to do if your plant has a rot?
If your plant has a severe case of root rot, cut out the infected roots and repot the plant with fresh potting mix and a new pot. 8. Gray Mold. This type of fungus is a common disease that’s usually found in flowers and can spread quickly, causing severe harm to your plant.
Why are my potted plants turning yellow?
15. Yellowing Leaves. Yellowing leaves can result from overwatering, low light, low humidity and poor drainage.
How to treat gray mold on a plant?
In severe cases, you can opt to use a fungicide to treat the plant.
What does it mean when you see white powdery mildew on your plants?
This particular disease can be easily identified on your affected plant — if you clearly see white powdery fungal growth on foliage, that is a sure sign that it’s powdery mildew. Though not typically fatal, this disease can spread and affect plant growth drastically, even causing leaf distortion in some cases.
Why do plants have symptoms?
There can be numerous causes for plant symptoms. Not all symptoms are related to insects or plant diseases. Plant health may be affected by soil fertility and texture, weather conditions, quantity of light, and other environmental and cultural conditions, as well as animals, including humans. In addition, complexes can develop from interactions ...
What are the signs of a plant pathogen?
Symptoms are changes in the appearance of the plant in response to infection by the pathogen (e.g., wilting or chlorosis). Go back to your resources and try to solve the puzzle.
What does a plant look like before it is wrong?
You have to know what the plant is supposed to look like before you can know that something is wrong. For example, some plants have variegated foliage or are yellow green. They are not diseased; they are supposed to look that way. (See example variegated thyme.)
Is lettuce an abiotic problem?
Are the symptoms present on just one species or variety of plant? If plants from many different families were affected, such as lettuce, tomatoes, flowers and turnips, then it is more likely to be an abiotic problem.
What is a problem plant?
A completely separate grouping of problem plants is listed by each state, usually in their seed statutes. These state laws have been around for a very long time, and they remain an amalgam of old agricultural and livestock protection rulings plus newer environmental concerns. Prohibiting seeds (and/or plants) from a state (or country, for that matter) have always been a somewhat efficient method of control, since seed companies shipping across state lines can be held accountable for enforcing the regulations.
What does it mean when a plant is an alien?
When a botanist speaks of an "alien" or "exotic" plant, it simply means a species that is not native to the area in which it is growing; the plant is usually from another continent, but the terms are neither positive or negative. They simply mean the plant is an immigrant.
What is noxious weed?
A noxious or invasive plant usually describes a plant that moves into an area, such as wetlands, rangelands, etc., and crowds out other native species. The exact definition is subject to state interpretation, and all 50 states now maintain a "Noxious Weed List.". The action the state takes against these weeds, if any, varies state by state.
What is it called when a plant jumps the fence?
Frederick McGourty, the famous garden writer, calls such plants "thugs." They tend to "take over." But he is speaking about his garden, not the landscape! Of course, a few flowers are what have been called "garden escapes", species that have "jumped the garden fence" and made themselves at home in our fields and along our roadsides. This is precisely how some kudzu-like species have arrived, but the huge majority of plants "jumping" garden fences may appear elsewhere, but cannot compete to the extent required to have any effect on our environment.
Do invasive plants degrade the environment?
Invasive plants actually degrade our environment. Here are the facts that will help you to understand more about noxious weeds, invasive wildflowers, and prohibited plants, so that you can make smart decisions in your garden!
Can you plant wildflowers that are invasive?
You hear it more and more. "Oh, you can't plant that. It's invasive!" "That wildflower may be pretty, but it's prohibited!" There are some plants—and a few of them are wildflowers—that can create real problems in gardens and natural spaces. Invasive plants actually degrade our environment. Here are the facts that will help you to understand more about noxious weeds, invasive wildflowers, and prohibited plants, so that you can make smart decisions in your garden!
Why is my houseplant sick?
There are many possible reasons why your plant is looking sick, but you can usually narrow it down to common houseplant problems with water, light, pests or disease. Learning basic houseplant troubleshooting may help you determine if your plant can be saved, or if all hope is lost.
What are some examples of environmental problems?
Light – Environmental issues indoors often include problems with light. For example, a plant that looks long and spindly may be stretching to reach available light. A flowering plant that refuses to bloom may also be lacking adequate light.
What are the bugs on my plants?
Mealybugs, which are usually easy to spot by the small, cottony masses on joints or undersides of leaves. Scale, tiny bugs covered by a hard, waxy shell. Although they are less common, your plant may be infested with fungus gnats, whiteflies or aphids. Printer Friendly Version.
How to identify spider mites on plants?
If you can’t see the pests, you may be able to identify them by the fine webbing or tiny specks they leave on the leaves.
What factors affect the humidity of indoor plants?
Temperature – Temperature is also a factor. Remember that most indoor plants are actually tropical plants adapted to the home environment. Room temperature may be too low or the air may be too dry. Raising humidity indoors can help alleviate most issues with dry air.
Why are my leaves turning yellow?
Anthracnose, a fungal disease that causes leaf tips to turn yellow and brown. Various fungal and bacterial diseases, often indicated by black dots or water-soaked areas. Moisture-related diseases, including powdery mildew, are often an indication of poor air circulation around the plant.
How to get rid of brown spots on my plants?
If this is the case, moving the plant to a brighter spot may solve the problem. On the other hand, if your plant is brownish with scorched-looking tips or edges, the light may be too intense. Move the plant to a less intensely lit location and prune out the brown areas. Temperature – Temperature is also a factor.
