Have finally succeeded in growing 'Longwood', but they get very tall and out of control looking. Any ideas for growing these more compactly? Also, they're not blooming much even though I'm using bloombooster fertilizer.
They're in an east window. Would they do better under lights? Grow more compactly?
Want to try other Kohlerias. Can anyone recommend others and where to get them?
Any advice much appreciated.