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Persistent Aphids on Althea, Hibiscus, Gardenia: Systemic Insecticides Needed

Houston, TX. Aphids on althea tree, gardenia bushes, ornamental hibiscus (in ground). Ferti-lome (malathion) fails. Seeking granular soil-applied product.

Problem: Combo Products Diluted

Insecticide/fungicide combos often weak on insects.

Better Insect-Only Options

Bayer Advanced Tree & Shrub Insect Control (imidacloprid soil drench).
Malathion concentrate (liquid).
Bifenthrin concentrate.
Orthene (acephate).

All broad-spectrum. Consult garden center; read labels fully.

Expert insight provided by Steve.

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