Best Time To Spray For Adelgids - Knowledgebase Question

Name: Isabel Kurlan
Paramus, NJ
Question by ikmkpharm
July 18, 2000
When are the best 2 times per year to spray
hemlocks with oil dormant spray for adelgids?


Image
Answer from NGA
July 18, 2000

0

Horticultural oils are sprayed year round to control
hemlock wooly adelgid, although the dilution rate is different
for summer so you should read and follow the label
instructions very carefully. If you can achieve complete coverage,
the first application should do it -- maybe you will not need to
spray your trees again.

For the most up to date control suggestions for your area, you may wish to contact your county extension at 599-6162.

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