Plant health
What's wrong with my plant? How to find the cause
By Bloom team · Published
Most indoor plant problems come from growing conditions: too much or too little water, the wrong light, dry air, temperature swings or the wrong amount of fertilizer. Root rot and pests are the other causes to rule out. Take about five minutes to check the pot and soil, ask what changed and see where the damage sits.
Start here
Check the pot and soil, ask what changed, then see where the damage sits. Hold off on fertilizer or treatments until then.
How do you figure out what's wrong with a plant?
- Check the pot and soil. Push a finger an inch or two into the mix, and look for water in the saucer or outer pot. Then tip the plant out if you can. Healthy roots are usually white or light-colored and firm. Dark, soft roots point to root rot.
- Ask what changed. Did you move the plant, repot it, or change how you water or feed it? Did the heating come on, or is it near a draft? Many plants need time to adjust after a move. Illinois Extension says to change the spot and the watering if yellowing or leaf drop lasts more than a few weeks.
- See where the damage sits. Older, lower leaves that yellow and fall first often mean a dry plant. Old and new leaves dropping together suggest too much water. Burned or blackened new growth can point to too much fertilizer, drafts or sun. Then look under leaves and along stems for insects, webbing or sticky spots.
One symptom rarely proves one cause. Iowa State University says many problems come from several factors together, such as low humidity and too much fertilizer behind the same brown tips.
Start with growing conditions. Missouri Botanical Garden says the most common indoor plant problems are cultural, meaning light, water, warmth, soil, humidity and nutrition. The RHS says the vast majority can be resolved by adjusting the environment and care.
Sources: How can I diagnose my indoor plant's problem?; How to help a poorly houseplant; Diagnosing Houseplant Problems; Diagnosing Houseplant Problems Related to Poor Culture; Diagnose Indoor Plant Problems; Troubleshooting Houseplants; Diagnosis of Common Houseplant Problems.
What do the symptoms usually mean?
Each row is a place to start, not a diagnosis. Any pest product must be labeled for that pest and for indoor use.
| What you see | Common causes | What to check first |
|---|---|---|
| Yellow leaves | Too much or too little water, low light, cold, drafts, an oversized pot or pests | Feel the mix, then read why leaves turn yellow. |
| Drooping with wet soil | Too much water or root rot | Check the roots, then see if it is too much or too little water. |
| Drooping with dry soil | Too little water, too much light or a pot-bound plant | See if water runs down the pot side and misses the roots. Then read when to water. |
| Brown tips or edges | Dry air, uneven watering, fertilizer salts or tap water chemicals | Check if the heating is on. Then review watering and feeding. |
| Leaves dropping | A move, a sudden change in light or warmth, drafts, or soil too wet or dry | Ask what changed. A few old leaves falling from a healthy plant is normal. |
| Spots on leaves | Sun, cold water, aerosols, too much water or, less often, fungi or bacteria | Note the color. Dark spots with yellow margins may be fungal. |
| Tiny flies around the pot | Often fungus gnats, whose larvae thrive in wet soil | Feel how wet the surface stays. Then read the fungus gnat guide. |
| Webbing or pale speckles | Often spider mites | Tap a leaf over paper for moving specks. Then read the spider mite guide. |
| Sticky leaves or cottony bits | Often scale, mealybugs or aphids | Look under leaves and where they join stems. |
| White growth on the soil | Crust: salt buildup from fertilizer or hard water. Moldlike growth: soil fungi | Flush a crust with clear water. Our sources do not say if moldlike growth harms plants. |
Sources: Leaf damage on houseplants; How to help a poorly houseplant; Houseplant Problems; Diagnosing Houseplant Problems from Improper Environmental Conditions; Diagnosing Houseplant Problems Caused by Insect Pests; Houseplant Diseases & Disorders; Mineral and Fertilizer Salt Deposits on Indoor Plants; Troubleshooting Houseplants.
Is my plant dying, or can it recover?
Often it can recover. The RHS says many houseplants recover quickly once their growing conditions improve. We found no source that gives a general recovery time.
Some leaf loss is normal. An occasional older leaf yellows and falls as a plant ages. The RHS suspects a growing problem when most of the foliage changes color. Some plants, such as poinsettia and cyclamen, are short-lived indoors.
Root rot is harder. Iowa State says plants with crown or root rot rarely recover, and the University of Wisconsin plant clinic says throwing the plant out is often the best and most cost-effective choice. To try anyway, reduce soil moisture. University of Maryland Extension suggests cutting out rotten parts, replanting healthy sections and rooting cuttings in sterile mix.
Sources: How to help a poorly houseplant; Leaf damage on houseplants; Diagnosing Houseplant Problems from Diseases; Root Rots on Houseplants; Diagnose Indoor Plant Problems.
My plant is dying. What should I do?
- Do not water just because it droops. Wilting can come from root damage, and more water makes that worse.
- Fix what your checks found. That may mean changing the water, light, temperature or humidity, repotting or feeding. It can take a combination.
- Cut off leaves that are moldy, shriveled, or completely brown or yellow. They will not recover. Keep mostly green leaves until new ones grow.
- Keep the plant apart from your others until you fix the problem.
Sources: How to help a poorly houseplant; Diagnosing Houseplant Problems Related to Poor Culture.
When should you ask for help?
- Photograph every affected part, including both sides of leaves, the stems and the soil.
- Note the plant name (identify it if unsure), where it sits, how much sun it gets, how often you water, and anything you applied, with dates.
- Note when you first saw the problem, how much of the plant it affects, whether nearby plants have it, and what changed first.
Ask when the checks do not point to a cause or the plant keeps declining. Take your photos and notes to a local extension office, plant clinic or garden center. Penn State Extension says it is always best to confirm your conclusion with a sample. The University of Wisconsin clinic warns that very few diseases can be diagnosed accurately by eye.
Sources: Tips for Submitting Photos to Ask Extension; What's Wrong with My Plant?; Diagnosing a Plant Problem 101; Root Rots on Houseplants; Troubleshooting Houseplants.
Frequently asked questions
How can I tell what's wrong with my plant?
Check the pot and soil first, including the roots if you can. Then ask what changed and look at which leaves are affected. Check under leaves for pests.
Why is my plant dying even though I water it?
It may be getting too much water. University of Maryland Extension calls overwatering the number one reason indoor plants fail. Roots left in wet soil can rot, and the plant then wilts because it cannot take up enough water.
Why is my plant dying from the bottom up?
Lower leaves that yellow and fall can mean too little water, too much water, too little light or too little fertilizer. The odd lower leaf falling from a mature plant is normal.
How do you know if a plant is dying?
Common signs of poor health are wilting, yellowing, browning and leaf drop. One older leaf changing is normal, so look at how much of the plant is affected. Dark, mushy roots are a more serious sign.
Can a dying plant be saved?
Often, yes. The RHS says many houseplants recover quickly once their growing conditions improve. Root rot is harder, and Iowa State says plants with crown or root rot rarely recover.
Sources and editorial note
Prepared by the Bloom team with AI assistance, using the guidance below, sources checked November 2, 2026. No horticulturist has reviewed this article, and these organizations have not reviewed or endorsed Bloom. The order of the three checks and the five-minute estimate are the Bloom team's suggestions, not a tested method.
- How can I diagnose my indoor plant's problem? · Missouri Botanical Garden
- How to help a poorly houseplant · Royal Horticultural Society
- Leaf damage on houseplants · Royal Horticultural Society
- Diagnosing Houseplant Problems · Iowa State University Extension and Outreach
- Diagnosing Houseplant Problems from Improper Environmental Conditions · Iowa State University Extension and Outreach
- Diagnosing Houseplant Problems Related to Poor Culture · Iowa State University Extension and Outreach
- Diagnosing Houseplant Problems Caused by Insect Pests · Iowa State University Extension and Outreach
- Diagnosing Houseplant Problems from Diseases · Iowa State University Extension and Outreach
- Houseplant Problems · UC Statewide IPM Program
- Troubleshooting Houseplants · University of Illinois Extension
- Diagnosis of Common Houseplant Problems · The Connecticut Agricultural Experiment Station
- Diagnose Indoor Plant Problems · University of Maryland Extension
- Yellowing Leaves on Indoor Plants · University of Maryland Extension
- Mineral and Fertilizer Salt Deposits on Indoor Plants · University of Maryland Extension
- Tips for Submitting Photos to Ask Extension · University of Maryland Extension
- Root Rots on Houseplants · University of Wisconsin-Madison Division of Extension
- Houseplant Diseases & Disorders · Clemson Cooperative Extension
- What's Wrong with My Plant? · UConn Home and Garden Education Center
- Diagnosing a Plant Problem 101 · Penn State Extension