Why Do Leaves Have Bumps

These bumps and deformities are generally the result of feeding insects or some other foreign organism such as bacteria, fungi, mites, nematodes, and even viruses. 1 Whatever the original cause, these organisms are usually not still on the leaf. The gall itself is the plant’s response to the irritation.

How do you get rid of galls in your leaves?

Before you ever see bumps on leaves or other plant parts, spray with a miticide to prevent galls on ornamental plants. Horticultural oils and some insecticides will be effective but not after the mites are under the surface of the plant.

What are the strange growths on leaves?

These unusual, and often ugly, growths are called galls and are usually more of a cosmetic problem rather than a health crisis. Galls usually form in response to the presence of some insects or mites and may appear as balls, knobs, lumps or warts, each being characteristic of the specific causal organism.

Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.

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