Leaf stippling describes the damage done by sap-sucking insects that give leaves a spotted appearance.
Every year, around July and August, gardeners begin seeing the effects of aphids, leafhoppers, spider mites, thrips, and other pests. In most cases, these insects have piercing mouthparts with a built-in straw. Pretty convenient, if you’re an insect. Sucks if you’re a leaf.
Leaf stippling won’t seriously harm an otherwise healthy plant, but it can interfere with photosynthesis and may compound water-stress.
If leaf stippling is visible, be sure to inspect plants for the cause. By knowing what you and your plants are up against, you can select the most effective treatment.
Hint: most sap-sucking bugs can be dislodged with a powerful stream of water from the hose.
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