I have a "May Night" Salvia that was planted three years ago. I want to pull up a coreopsis that suffers from our heat by mid-summer, and move the salvia up to the front of the bed, about three feet, in it's place, where it would get more sun and not be shaded by daylilies. Should I move the salvia this fall, or should I wait until spring?
You can move it now - provide it with some shade and moisture. Make a shade tent out of shade cloth or frost cloth, available at box stores. Don't let it dry out for the first couple of weeks - the time it needs to send out new feeder and anchor roots.