Arlyn, Scott, and Daisy,
Thanks for your answers. My soil is fairly heavy clay and unless it is amended with compost it becomes pretty much like concrete if not watered. I am leaning towards just digging down six inches, even though the AIS advises cultivating to a depth of 10 inches.
Daisy, I totally agree with you about rebloomers. I'm happy just to get one bloom a year!
