Leicestershire, United Kingdom
I planted 2 of these late season last year and this year they have gone mad. Starting from approx 6" high by 2" wide they are now about 5 foot wide by 3 foot tall. Plenty flowers of a lovely deep maroon colour but it does appear to ba a bit of a thuggish plant, pushing everything out of its way. My question is, will these continue to grow at the same rate and take over the garden or if I cut them back hard in autumn will they come back to the same size they are now ?
Im assuming they can be split in spring ?
Thanks in advance
- 22 Jul, 2011