Mike said:Yes, the large on is Dr. Huey.
My main concern about the mini rose is that it's in a tire planted with earth soil from the yard instead of potting soil, and not planted in the ground. The earth soil has become compacted and has likely shrunk or pulled away the the sides of the tire, letting most of the rain and water poured on top of it to run off along the sides, rather than penetrating the soil. This is why plants grown in pots (the tire is essentially a large pot without a bottom) should always be planted with potting soil, which is completely different from yard soil. Potting soil is loose and aerated with lots of air pockets to allow water and roots to spread. However, permanently planting a rose in potting soil where temperatures drop below freezing is not a good idea, as the rose roots and not as well insulated as they would be in the ground.
So, what to do? If it were my rose, I would transplant it into the earth. It's doing so poorly that I don't think you have much to lose. Alternately, if you want to wait till the fall to transplant it, I would take a dowel rod or thin pipe and poke holes through the soil to make sure the water penetrates down to the roots of the rose. Also, you'll need to fertilize it, and cut out the brown dead canes.
Good luck!
Mike said:Wood ash provides potassium, which roses need to grow roots and to bloom. Only a soil test would tell you if you have too much. But let me ask for a clarification about how deeply the rose is planted. When you said that you planted the roots in the ground, does that mean below the tire? If that's the case, then the soil within the tire has raised the soil around the rose about six inches, so the plant will have a very difficult time sending up new canes, let alone receive enough moisture. If this is the case, you could simply remove the tire and the soil mounded around the rose, and leave it in place with no need to transplant it.