Oil Sprays for Fruit Trees - Knowledgebase Question

Name: Frieda Wimmelman
Wilmington, VT
Question by doggone0
April 16, 1998
I've read you shouldn't apply a sulfur-based spray within three weeks of an oil spray. Does this rule hold true with the newer light horticultural sprays such as "Sun Spray"? My window of opportunity for spraying here in Vermont is quite small as you know!


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Answer from NGA
April 16, 1998

0

That's a good question. I'm not absolutely sure. Since Sun Spray is a petroleum-based product, like the earlier dormant oils, it could well have the same restrictions. However, there are new cottonseed-based horticultural oils which may not have those restrictions. "Oil Away" Insecticidal Spray is one example. It is sold by Gardens Alive (ph# 812-537-8650, e-mail: gardener@gardens-alive.com). You might contact them directly and inquire about both spray products. Sorry I couldn't be of more help--good luck with the trees!

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