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Glenn from Colonial Heights writes

When should I start and end using Bonide Systemic Insect Control to control mites in Dwarf Alberta Spruce?

I live in Central VA.


In general, mites on ornamental plants cannot be treated using systemic insecticides. Bonide Systemic Insect Control contains the active ingredient acephate, so it is labeled for two-spotted spider mites only when applied as a topical spray. Per the product label: Spray when insects are present or when feeding injury is first noticed. For hard to kill insects, such as flower thrips, gladiolus thrips, mealybugs, scales, two-spotted spider mites, and whiteflies, spray 2 to 3 times, waiting 7 to 10 days between each application. Repeat if re-infestation occurs. You can browse other products for spider mites here. To avoid mite resistance, you should rotate between at least 2 products with different modes of action if you need to treat more than 2-3 times in a row.

Answer last updated on: 10/30/2018

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