How to Spot and Fix Common Indoor Plant Pests
Indoor plant pests are rude little freeloaders. One minute your plant looks fine, the next there are sticky leaves, tiny webs or little flies hovering around the soil like they pay rent. The key is spotting problems early and acting before pests spread through the rest of your indoor jungle. Browse our plant care tools if you need help keeping your plants in check.
Fungus gnats are one of the most common indoor plant pests. They look like tiny black flies around the soil surface and usually appear when potting mix stays too damp. The adults are annoying, but the larvae live in the soil. Let the top layer dry out, improve drainage and use sticky traps to reduce adults. You can also read our fungus gnat treatment guide.
Mealybugs look like small white fluffy blobs on stems, leaf joints and undersides of leaves. They suck sap from plants and can spread if ignored. Isolate the affected plant, remove visible bugs with a cotton tip and suitable treatment, then keep checking every few days. Yellowing or weak growth can be a sign something is feeding on the plant.
Scale insects look like small brown, tan or white bumps stuck to stems and leaves. They can be easy to miss because they do not always look like insects. If the bumps scrape off, you may be dealing with scale. Remove what you can manually and isolate the plant while treating it.
Spider mites are tiny and often show up as fine webbing, speckled leaves or a dusty look on the undersides of foliage. They love dry conditions, so increasing humidity and rinsing leaves can help alongside treatment. If your plant has brown tips or dry, stressed foliage, our brown tips guide may help you check whether environment is also part of the issue.
Thrips can be especially frustrating because they are small, quick and damaging. Leaves may appear silvery, scarred, distorted or dotted with tiny black specks. Remove badly damaged leaves, isolate the plant and treat consistently. Thrips are not a one-and-done situation; you need follow-up checks.
Whenever you find pests, isolate the plant first. This protects your other plants while you work out what is going on. Check nearby plants too, especially if they were touching leaves or sitting close together. Browse our indoor plants for hardy options, but remember that even tough plants can get pests.
Next, clean the plant. Wipe leaves, rinse stems where suitable and remove dead foliage from the soil surface. Pests often hide in leaf joints, under leaves and around new growth, so inspect those areas carefully. Good airflow and tidy pots make it harder for pests to settle in.
Watering habits matter too. Overwatering can lead to fungus gnats and root stress, while underwatered plants can become weaker and more pest-prone. Use a soil moisture meter if you are unsure, and check our guide on why plant leaves turn yellow if foliage is looking off.
Prevention is mostly about habits: inspect new plants, quarantine suspicious plants, avoid soggy soil, wipe leaves and keep plants generally healthy. The Essential Plant Care Starter Pack can help with the basics, especially if you are building a routine.
Plant pests are annoying, but they are not always a disaster. Spot them early, isolate the plant, clean what you can, treat consistently and keep checking. The sooner you act, the less likely your plant shelf turns into a bug sharehouse.