Scale Insects on Citrus Plants

November 28, 2018

Scale is a tough greenhouse pest,that is prone to attacking citrus. They are oval-shaped insects with either a hard or cottony shell, with different colors. They cluster on stems and base of leaves, and I have even seen them overwinter on pots.

Scale insects and sooty mold on a greenhouse citrus plant.
PC: Leslie F. Halleck

To help control all pests and diseases, always keep your pots, seed trays, and tools clean. You can clean and sterilize reusable pots and trays with solutions of hydrogen peroxide, a 10 percent bleach solution, or diluted vinegar.

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