Sticky Leaves on Jasmine: Prune First, Then Treat

Dealing with Sticky Residue on Jasmine

A reader named Tammy noticed a sticky substance on the floor around her jasmine plant—a classic sign of scale insects or mealybugs. She asked whether to prune first or drench the plant with a treatment spray.

Prune Before Spraying

Pruning first reduces the amount of foliage that needs to be treated, making the spray application more thorough and efficient. Remove heavily infested stems and any dead or yellowing leaves. After pruning, drench all remaining leaf and stem surfaces (top and bottom) with a suitable insecticidal soap, neem oil, or a rubbing-alcohol solution (1 part alcohol to 5 parts water plus a drop of dish soap). Repeat the treatment in 5–7 days to catch any newly hatched crawlers.

Follow-Up Care

Monitor the plant weekly for recurrence. Keep the jasmine in bright, indirect light with good air circulation, and water only when the top half-inch of soil feels dry. Avoid over-fertilizing, as soft new growth attracts pests.