A plant with droopy leaves probably is not getting enough water. Too much water also makes a rose bush wilt, but yellowing and dropping of the leaves typically follows.
2. Check the rose bush's. Rose diseases that cause leaves to fall off are often signaled by spotting, deformation or other changes in the leaves. Roses are susceptible to fungal diseases, which can cause defoliation.
Pests are common causes of leaf drop. Some leaves show the signs of specific pests. Dropped leaves that have notches taken out are due to earwigs or cutworms. Jul 21, I also see the leaf drop on the climbing roses on my fence. They are blooming the second time but no leaves. HELP P.S My climbers are also old roses, Blaze and Climbing Don Juan. My location is Northern Ohio.
No high heat or very hot sun. The weather has been quite cool. However, I have never seen those roses flourish with growth and healthy Estimated Reading Time: 6 mins. Oct 16, Perhaps it just the high heat (in the triple digits) that made this rose drop its leaves, even with plenty of water. Now that it's cooler, with some good rains, too, I'm going to fertilize and add Super Thrive! May 29, Too little water causes severe stress and force the plants into dormancy by dropping it's leaves.
Worse, the roots could dry up completely and the roses would die. You can easily figure out if this is a problem, if you dig a little test hole near the root ball of your roses - if water droplets can be squeezed out of the soil, it's too wet.