What's your question? Ask


Q.Cochineal Scale Infestation

Zone Los Angeles, CA | Thomas F added on August 23, 2022 | Answered

I read your article on cochineal scale infestation. I’m a homeowner in Los Angeles. My 20 foot by 20 ft cactus patches infected. I’ve used Malathion and triazicide as recommended, after hosing off the webs. I’ve tried Bee Safe Insect Killer Concentrate, and Ortho exterior insect killer. Nothing has worked. I have been fighting a bug fo 4 months. Is there anything else I can try.

A.Answers to this queston: Add Answer
Certified GKH Gardening Expert
Answered on August 23, 2022

Outside of constant maintenance, not much will help. If you want to get serious about it (but do so carefully... There are some consequences for using incorrectly) then systemic pesticides will be one way to make sure that they do not return.

This article will help:


A google search can reveal natural variants, which I prefer, that are still systemic in nature.

Was this answer useful?

Log in or sign up to help answer this question.

Did you find this helpful? Share it with your friends!

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?
here are more questions about...
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert