I think using any kind of covering is going to do two things. It will be visible from the air, and it will keep the plants from breathing.

As an alternative, try mixing a little hydrogen peroxide into a gallon of water and dump it on the plants, rain or shine. This will, at the very minimum, bring some O2 straight to the root ball.
Comatose Reviewed by Comatose on . How do you minimize bud rot when the rain starts? I've had no trouble growing big and beautiful outdoor plants here in the Pacific Northwest. The problem is about 3 weeks before harvest time it usually starts raining. My big beautiful buds seem to love to soak up the water, and hold it deep inside themselves even when it's not raining. It is typical that I have to choose a cut off point, wieghing bud decay against the prefered harvest time. Well it started raining yesterday, and continues off and on. Here we go again. But this year I have Rating: 5