Whiteflies are a terrible nuisance and, in large numbers, a major pest.
The best product I have used is called TriStar (Cleary Chemical Corp.).
- It utilizes three modes of action: systemic, contact, and ingestion.
- TriStar is a neonicotinyl foliar insect spray for greenhouse, field, nursery and landscape crops.
The label covers broad spectrum control of aphids, mealy bugs, caterpillars, scales, whiteflies, thrips, leaf eating beetles and leaf miners.