actually, it's quite harmful to the plants; smoke causes the stomata to close, and the plant cannot respire.

i advise you not blow smoke on your plants.
Scarlet Sky Reviewed by Scarlet Sky on . Quick odd question about smoke effects on Cannbis Plants Hi there, I have been growing for a couple of years now, and i have had a question that i've been wanting to ask for a while now. If i was smoking weed around, or blew smoke directly at the plants, would it have any affect on the health of them? Would it help them in anyway? My theory was it helped in potency...but i am not certain on this. Anyone got any ideas? Cheers:thumbsup: , Sam Rating: 5