Tropicals & Tender Perennials: A Problem? Need Assistance, Please, 1 by bjf826

bjf826 wrote:
I noticed these spots/pits/discolorations on my H. cv 'Jennifer' last week. The condition is not present on all the leaves and appears different on some of the leaves. The most severely effected seem to be toward the top of the plant. Would an unusually cold environment cause this? Or, might it be a condition due to a weakening of the plant from the cold? The reason I ask this is that it has been in the low 20s and high teens this past week and my house (rental) is very hard to heat. I use electric space heaters and don't trust them enough to leave them running in an unoccupied room during the night, so the room where my plants live sometimes gets into the 30s.
I will post several pictures I just took. Any help you can give me would be very much appreciated. I really don't want to lose this plant, because if I had to pick my favorite one, it would be this one!
Thanks!!!!

Barb