Care for Orchids

Five Common Orchid Pests

When growing these beautiful plants, you will probably have to deal with a few orchid pests. If you have multiple plants, then you also have to worry about them transmitting diseases back and forth. Some of the most common pests include aphids, mealybugs, and mites. This article will discuss some of the most common orchid pests.


Aphids usually cause the most problems for those growing orchids. These sucking insects are usually found beneath leaves or on stems. They suck the juices from the plant causing damage. However, they can cause the most damage by transmitting a virus. You can simply get rid of them by spraying them with water or by brushing them off.


Mites are microscopic animals that also cause problems for those growing orchids. They kill the cells of the surface layer of the leaves. This severely weakens and disfigures your plant.

The first sign of a mite infestation is the appearance of silvery leaves. You can especially notice this change of color on the bottom of them. Sometimes, the top of the leaves will develop yellow spots. To get rid of mites, you have to wash your plant thoroughly. You should also wipe off each leaf.

Fungus Gnats

Fungus gnats are also common orchid pests. They usually cause problems if the potting medium is too warm, wet, or decayed. These are excellent conditions for their larvae to grow.

The best way to get rid of these gnats is to make sure the potting medium isn't too wet. Make sure you allow it to dry before you water the plant again. You can also use sticky cards that are used to combat white flies.

White Flies

White flies are the next orchid pests you should be aware of. These are sucking insects like aphids, but they are smaller. If you allow an infestation of white flies to become too severe, your plant will become extremely weak. If growing these plants in a greenhouse, it can prove to be very difficult to control these pests. You will have to use insecticides to try to control them.


You should also know about mealybugs if you're growing orchids. They survive by feeding on the roots and under bracts. Under greenhouse conditions, mealybugs can reproduce throughout the whole year.

The first thing you'll notice when mealybugs infect your plant is the leaves turning yellow. The leaves may also drop early. If the infestation becomes too severe, the plant will become severely weakened and may even die.

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