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Janice from Keller, Texas writes

Is Bonide neem oil safe for begonias?

I used this product last year for a really bad spider mite infestation. My marigolds died a horrible death (I think they were too far gone before I noticed (I was out of town and my son was in charge of watering). My beautiful begonias looked very healthy but I used the neem oil ‘just in case’. The begonias died within a few weeks. I don’t want a repeat this year. What plants are harmed by neem oil?


The Bonide Neem Oil states on their product label " Do not apply to known sensitive plant species, such as impatiens flowers, fuchsia flowers, hibiscus flowers, some rose flowers, ornamental olive trees, or some carnation varieties without prior testing" 
We would suggest reaching out to the Master Gardener with the Cooperative Extension Office located in your county. They are a helpful resource for homeowners in regards to lawn, ornamental and landscape care. 

Answer last updated on: 04/23/2020

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