[Arid_gardener] Question from Home-Hort WWW page

[pollyrs at cox.net]

Polly
85302
pollyrs at cox.net

I have two large old rosebushes(Don Juan?)on the north side of my house.  Both are growing healthily and producing many blooms.  But many/most of the stems seem too weak to support the buds. They hang and drop downwards on their stems. I've been spraying all my roses twice a month since new growth started with Eden BioScience's Messenger product.  Is there some additional nutrient these two bushes need to grow stronger straighter stems?

Thanks