Identifying and Controlling Worms on an Indoor Dracaena Tree

An indoor dracaena tree, estimated to be 25–30 years old when purchased nine years ago, stands near a balcony door. Recently, the owner noticed small, blackish, curled worms about one inch long on the floor around the tree. These appear to be shed casings rather than live insects. Despite thorough inspection of leaves, bark, and soil, no pests were found on the plant itself.

Likely Cause and Solution

The worms are likely caterpillars that hatched from eggs laid by a moth near the base of the tree. The good news is they can be effectively controlled with Bacillus thuringiensis (BT), a natural, non-toxic bacterial insecticide. BT targets caterpillars and worms while being safe for humans, pets, and beneficial insects.

BT is available in powder form under brand names such as Greenstep, Dipel, and MVP. It can be purchased online from retailers like Gardens Alive or at local garden centers. Apply according to label directions for best results.

Regular monitoring and prompt treatment will keep your dracaena healthy and worm-free.