Could be?? I cover the two plants up for about 3-4 hours a day with plastic trash bags inside my barn, tucked away, to force them to flower a little early (outside). Maybe its from the bag resting on the plants?? Hope this is it!!

Buuut...it's really just a possibility and I don't know if this is my deal...hopefully Ill get pictures up tomorrow for a definite answer...If I can get some good pics of what I am talking about!!