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Euphorbia Plants

Q.euphorbia trigona

Zone Lambertville NJ | Anonymous added on November 29, 2018 | Answered

A friend gave me a 4′ high cactus that I think is a euphorbia trigona. It looks healthy with lots of small leaves that she said were flowers. There are some fine spider webs at the top of the plant. I don’t know if there really are small spiders or if that’s what spider mites produce. Should I assume they are mites and spray w insecticidal soap? Can it hurt the plant?

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Answered on November 30, 2018

I am just expressing my own experience; I had this issue last year and at the local HomeDepot they told me to use 1/2 Rubbing Alcohol and 1/2 Water in a spray bottle and then spray all over the plant. I did it once a day for two days and all the spider mites were vanished for good.

Supposedly a little Alcohol does not harm plants.

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