I live in West Tennessee, garden zone 7, and just planted several Kleims Hardy Gardenias. The limbs are falling to the ground at the base of the plant and some of the leaves are turning yellow. They have only been planted a week. What do you think the problem is? At first, I thought maybe a cat was crawling through them, but then I noticed that every one that I planted is doing the same thing. Could I have planted it to deeply? Should it have been raised above soil level? We have had one drenching rain, but other than that, I have watered it often. Any help or suggestions would be appreciated.