Controlling Whiteflies on Tall Orchid Trees: Systemic Insecticide Considerations

Treating a 12‑Foot Orchid Tree

Spraying is impractical at that height. A soil drench with a systemic insecticide (e.g., imidacloprid) can be effective—the tree translocates the chemical to the leaves, killing feeding whiteflies.

Caution

Do not use systemics on edible plants. If bees pollinate your orchid tree, avoid systemics during bloom to protect pollinators. Otherwise, a single drench per label directions should suppress the infestation.