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I set out some nice clones about a week ago when the night temps were in the mid 40's because I usually wait too long to get a jump on spring.
This week there has been a cold spell. Day temps in the 60's, but the past 3 nights have dipped into the upper 30's.
Am I screwed? Is there any way to insulate the plants to retain heat through the night? The forecast calls for more cold weather for the next 2 nights. Zone 6.
Quote: Dr. Penguin said: If you have reasonable access to them and they are very secluded, you could build a 'cold frame'. It is basically a clear box made of plastic that shelters the plant from the wind and cold. You could build one from some plastic sheets and a pvc skeleton or even get a clear rubber-maid tub. Whatever you do though, make sure you leave at least a crack for air exchange.
I've got easy access to the site, and it's in a very secluded area, so that shouldn't be a factor.
I was considering doing something like you were referring to. Maybe taking those cone/cylindrical shaped metal frames people use for tomato plants and wrapping them with plastic sheeting. I'll be sure and cut some holes for ventilation.
I checked on them today, and they're not wilted, but I can tell the cold got to them. I'm sure it's been asked before, but can anyone tell me at what temperature does the cold begin to seriously negatively affect the plants?
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