Answer: According to the label, it is safe to use on avocado, citrus, camellia, gardenia, ixora, and ligustrum. I would not use the product on any plants that are not listed on the label. The product could burn the foliage. Just use it on the above listed plants, in amounts as recommended on the label.
Whiteflies are really difficult to control. Insecticidal soap is usually effective but repeat sprays are often needed.
Good luck with your garden.
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