Spider Mites on Cypress Vine Seedlings: Safe, Effective Control

Cypress vine (Ipomoea quamoclit) seedlings are tender and easily damaged by sprays. If you see fine webbing and tiny brown dots, you likely have spider mites—but confirm before treating.

First Steps

1. Wash them off. Take seedlings to a sink and gently rinse foliage and soil surface with lukewarm water. Repeat daily.
2. Apply insecticidal soap. It smothers mites and soft-bodied insects without harming young plants. Spray early morning or evening, covering leaf undersides.

Why Insecticides Fail

Spider mites are arachnids, not insects. Most insecticides don’t affect them and can kill beneficial predators. Use a miticide only as a last resort—and never on seedlings in hot sun.

Move Outdoors ASAP

Annual vines grown indoors are prone to mite outbreaks due to low humidity and lack of predators. Harden off and transplant outside as soon as nights stay above 50°F. If it’s too early, start a fresh batch 3 weeks before your last frost date.

With prompt washing, soap sprays, and outdoor conditions, your cypress vine can outgrow the infestation.