Linda ...
I've read this thread and am wondering if you may have a drainage problem where you are planting your hybrid teas, not just a hardiness and soil issues.
If your new roses do not come back next year, that may be the biggest problem you have in your garden. The only way to find out is to do a perk test before planting. It's too late to do one for the roses you've planted this year. What do I mean by a perk test ? You fill your planting hole with water and if it drains over night, you are OK. Rose literature says it should drain within two hours, but overnight works. If your rose hole doesn't drain overnight, that tells you that you do not have good drainage for your rose at that site in your garden. The anchor roots of the rose will be in standing water for too long.
When you back fill a deep rose hole, there is no need to use amended soil down deep because that is where the anchor roots are located. Your amended soil goes in the top portion of the planting hole where the rose's feeder roots are located. The feeder roots will supply the nutrients the anchor roots need to thrive. That saves you both work and money ...
So, when you dig your planting hole, it doesn't need to be as wide at the base as it is at the top. You put all of the good stuff at the top and your rose will be happy.
All of the info is for next year. I am hoping that all of the work you have done this year is sufficient for your new roses to do well.
