Q & A

Welcome to the Planet Natural Garden Forum! Whether you’re new to gardening or have been at it for some time, here you can search existing messages for answers to your questions or post a new message for others to reply to. If this is your first visit, please read over our forum instructions carefully before posting. Enjoy!


E. Vinje

Insecticidal soap works via dehydration and is short lived in the environment. However, it is not specific to aphids. If you could spot treat the aphid colonies, rather than blanket spraying, you would minimize any damage to the monarch butterflies, larvae and eggs. In fact, once insecticidal soap dries it is no longer effective. I’ve included a link to our Aphid Control page.


Hope it helps!