Daphne Plants
Q.

Black scale on under side of daphne plant

Zone sandford tasmania 7020 | Anonymous added on December 20, 2019 | Answered

What should I spray it with?

A.
A.Answers to this queston: Add Answer
GKH_Susan
Certified GKH Gardening Expert
Answered on December 21, 2019

Adult scale insects are protected with a waxy covering and are not controlled well with common contact insecticide sprays. Contact sprays can be used during the early/immature stage of the insect pest life cycle, called "crawler" stage, usually in early spring. You can try a systemic insecticide that penetrates the leaf and translocates into the sap that the pests are feeding on. Below are more options:

https://www.gardeningknowhow.com/plant-problems/pests/insects/control-plant-scale.htm

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