Q.I think I have scale on my scabiosa pin cushion flowers
Wanted to know if I should spray with neem oil- I live in So California – zone 9
drtreelove
Answered on June 28, 2018
Neem oil will not be effective to control an existing scale infestation. It works best as a preventive, before and during the inmature "crawler" stage. Scale insect adults are protected from contact sprays. During an active infestation you neem to use a systemic insecticide.
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