Help! I am new to gardening in San Antonio and need to know what is wrong with my roses. I never had problems in CA. The stems have started growing faster with a lot of thorns and small leaves. I have hybrid teas and the blooms are very small, open quickly and are gone with few petals. Is it disease, nutrition, the brutal heat of San Antonio? Please help if you know. Thank you so much for any help!

Has anyone sprayed any chemicals in or near your home?

We have pest control spray every two months but it's around the house and not on the roses.

Some of the chemicals used can volatilize and get to the plants with a light wind and then drift and damage plants/trees that were not the original targets of the chemicals. They can travel from your home to a neighbor's home and cause problems there also. Symptoms may include twisting and distortion of plant foliage/growth, leaf yellowing, etc. Report any changes in the symptoms.

In addition to the above, I would recommend mulching around the roses to help the soil retain moisture. Roses are thirsty plants.

I water 15 minutes three times weekly and more if needed. I use Bio Advanced systemic rose food every six weeks. I just started using Rose Rx fungicide / insecticide spray when I feed the roses, but I think I need to use it more often. We have terrible clay soil and planted the roses using Black Gold Natural and Organic potting soil - hopefully we dug deep enough. They are north facing but get at least six hours sun daily. My roses in the back yard aren't acting that way. They have small roses though. Thank you so much for any help identifying my problem.

Unfortunately, potting soil should not be used to plant roses in the ground. It is light weight and very porous to let water flow down and through the holes in pots; thus, moisture evaporates much more quickly from potting soil than regular soil. When planting roses in the ground, consider using bagged garden soil instead (or even bagged top soil), which is very different from potting soil. I suggest mixing it with peat moss and composted manure to improve its texture and aeration.

I water 15 minutes three times weekly and more if needed. I use Bio Advanced systemic rose food every six weeks. I just started using Rose Rx fungicide / insecticide spray when I feed the roses, but I think I need to use it more often. We have terrible clay soil and planted the roses using Black Gold Natural and Organic potting soil - hopefully we dug deep enough. They are north facing but get at least six hours sun daily. My roses in the back yard aren't acting that way. They have small roses though. Thank you so much for any help identifying my problem.

The heat here in Texas has been brutal this summer. Spraying anything in this heat is tricky. Many things say to not spray in temps above 85. You may have luck posting on the Texas forum to get ideas. As you can see it is quite different gardening here than California.
I also think you might get some ideas if hybrid teas are successful here in Texas. If you know the variety they may be able to help. Generally I don't know that they are the most successful/ easy to grow categories. Hence Antique Rose Emporium was born. Weareroses.com