Can you dormant spray if temperature is bellow freezing?

General Fruit Growing
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Yup! Stollers Natr’l is another

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Yes you can easily make your own, but I would follow a known recipe. Here is one story with a recipe in it.

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Thanks, Scott. I have read your impact spray schedule a few times. My memory is not as good as it used to be.

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I will probably be unable to spray my fruit in late dormant in spring. Would it be worse to not spray at all until after the blossoms fall in spring or to spray now when lows are around 20 degrees, but on a day above freezing. I am thinking copper and lime/oil/sulfur for bacterial spot/canker on cherries or plums, and for general pest control on apples, pears (psyllid), apricots, maybe blueberries. What is safe to use on apricots?