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nhteatime
Well-Known Member
Supposed to drop in the 30s tonight...should I cover them for the night??? They have handled the 40s okay so far but worried about tonight.
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Hi Bright, I dont think its from spraying because its only on the one plant (so far) but I could be wrong - I am definitely going to trim off those leaves and possibly those tops near it. I dont want to take the chance of all four dying from this
Heres an article on a treatment I found:
Powdery mildew spreads quickly. Don't wait for it to appear–be pro-active and spray preventatively. An easy solution is right in your refrigerator: milk. As long as your plants are at least two weeks from harvest, a mix of 10 percent milk to 90 percent water can be sprayed on any part of the plant. Otherwise just spray on infected leaves.
Another way to stop the spores is to raise the pH of the alkalinity level of the leaf surface. Potassium bicarbonate, found at garden stores, is my first choice. You can also use baking soda (sodium bicarbonate). Mix 1 teaspoon of either to 1 quart of the 10 percent milk mix; if too close to harvest, omit the milk and just use water for an effective foliar spray.
I would rather try something like this than harsh chemicals or pull the plant at this point. its worth a try