Q.how to plant bare root roses .
The existing bed has had the same variety (simplicity) for over 25 years which is at the base of a grassy knoll. The grass is sprinkled in summer months. The roses have their own drip system. The roses last about 2-4 years and then have to be replaced.
Should I consider changing the soil or adding ammendments ( what kind).
What should the character of the soil be like when I plant the bare root plants and should I fertilize them when I plant them?

Certified GKH Gardening Expert
This article should help:
https://www.gardeningknowhow.com/ornamental/flowers/roses/bare-root-roses.htm