I have a mixed window box with some salvia patens. Do I trim them?
They had a few flowers when I got them but none now, though they are very healthy looking. I know they usually flower mid to late summer into fall, but I've never grown them before and I don't know if they need to be cut back to bloom.
Certified GKH Gardening Expert
You can trim off spent flowers and if it gets leggy in summer you can cut them back by 1/3.