Aphids on Evergreens: Garlic, Soap, and Lady Beetle Allies

A gardener sought soil-applied systemic control for recurring aphids on evergreens and ways to attract lady beetles. The expert recommended organic foliar treatments instead: garlic spray, insecticidal soap, or rotenone dust—applied early and repeatedly. Systemics for home use are limited and often unnecessary.

Planting garlic throughout the beds deters aphids with its sulfur compounds. For lady beetles, dill and cilantro are magnet plants; their flowers provide nectar and pollen. Commercial lady beetle houses with lures (e.g., from BestNest) can also boost populations.

Monitor weekly in spring; early intervention prevents colonies from exploding.