Mystic Spires performance and questions
My 'Mystic Spires' haven't stopped blooming all summer. This is the first year and they already had spires when I purchased and planted them. I've not had to cut them back, yet they keep on blooming on the same spires. There are many more new spires forming.
The plants -- I placed 6 in different areas of the garden -- dry, lean soil, all day sun as well as moist, rich soil, with good drainage and less sun. None are flopping over, and they have remained compact and full. The ones in the moist soil are even getting a bit crowded by zinnias, and the salvias remain happy.
There's no wilt, no problems at all with these healthy plants. I'm very impressed with 'Mystic Spires' so far. I'm in zone 7b and hope they will overwinter well.
What shall I do to prepare them for winter? Will they seed out?
Are there any other (besides 'Indigo Spires') varieties like this one? I already have bog sage, salvia uliginosa, that blooms non-stop. I also have a lot of the greggii colors, more great blooms off-and-on from April until frost.