Ya but they always drop leaves it is still natural and normal! You could go ask any of the big pot farmers in The Green Triangle they will tell you it is perfectly normal.
I used to get the best weed ever from this Dr. I knew. He grew it in his basement. It was like 15 years ago so all this mmj stuff was unheard of! He would only sell 1/8s. I used to sell weed to the head of the School Dist.