Noticing something unusual on your houseplant? Pests can show up even with good care, and early recognition is key. Below you'll find practical examples of common pests on popular houseplants, what symptoms to look for, and what you can do first.

Ficus: Scale Insects and Spider Mites

• Scale insects often appear as small, brown or tan bumps on stems and the underside of leaves. Leaves may become sticky due to honeydew.
• Spider mites are tiny and hard to spot, but you may see fine webbing between leaves and stems. Leaves can develop pale speckles or look dusty.
• Both pests can cause leaf yellowing and drop if not addressed.

Monstera: Thrips and Aphids

• Thrips are slender, fast-moving insects that leave silvery streaks or tiny black dots (droppings) on leaves. New growth may look deformed.
• Aphids cluster on young shoots and leaf undersides. They can be green, black, or brown, and often leave sticky residue.
• Both can cause curling, yellowing, or distorted leaves.

Strelitzia: Mealybugs and Sticky Leaves

• Mealybugs look like small, white cottony clumps, often in leaf axils or along stems. They excrete honeydew, making leaves sticky.
• Sticky leaves can also attract sooty mold, which appears as a black film on the surface.
• Infested plants may show slowed growth or leaf drop.

General Symptoms on Houseplants

• Sticky residue on leaves or furniture (often from sap-sucking pests).
• Fine webbing, especially in leaf joints or on the undersides.
• Speckles, pale patches, or yellowing on leaves.
• Visible insects, eggs, or cottony masses.
• Deformed or stunted new growth.

First Aid for Houseplant Pests

1. Inspect your plant closely, including leaf undersides and stems.
2. If you suspect pests, move the plant away from others to prevent spread.
3. Remove visible pests by hand or with a gentle stream of water.
4. Wipe sticky leaves with a damp cloth.
5. Monitor the plant over the next weeks for new symptoms.
6. For more detailed steps, see First Aid for Plant Pests.

Frequently Asked Questions about Houseplant Pests

Which pests are most common on houseplants?

Common pests include spider mites, scale insects, mealybugs, thrips, and aphids. The exact type can depend on the plant species and indoor conditions.

How do I recognize spider mites or thrips on my plant?

Spider mites often leave fine webbing and pale speckles on leaves. Thrips cause silvery streaks, black dots, and sometimes distorted new growth. Both are small and may require close inspection to spot.

What are typical symptoms of mealybugs?

Mealybugs look like white, cottony clusters on stems and leaf joints. They often cause sticky leaves and can slow plant growth.

Should I isolate my houseplant if I find pests?

Yes, it's best to move affected plants away from others to reduce the risk of spreading pests indoors.