Ask a Question forum→Treating scale on cereus cactus

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Scottsdale, AZ
May 16, 2020 9:11 AM CST
I noticed scale infiltrating a huge specimen of cereus cactus in my garden. I cannot handpick the critters because of the plant size. I have researched treatments on line but they seem to conflict and I do not want to harm this plant. Can you advise me on the proper chemical treatment?
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
May 16, 2020 9:44 AM CST
What kind of scale? If the ones with the waxy shell, you will have to find a systemic.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada

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