My rose bushes bloomed beautifully in February and the roses were even bigger then ever. Now they barely bloom at all and all the leaves are gone. Most are climbing so all you see is stems there are a few leaves at the top with a few pathetic looking blooms. I do live in the DFW area so the rain has been few and far between and the days have been extremely hot and humid but we keep the yard watered and the grass is very green. Any suggestions on what I might be doing wrong?