Posted: 18/04/2013 at 08:09
I've tried Moorheim Beauty a few times, but the slugs just devour it. However, Sahin's Early Flowerer is a lovely, long flowering variety which they totally ignore. It's not invasive, but does clump up, so I divide every year or so, and now have it dotted through my garden, and friends have been grateful recipients of divisions too.
It is one of those plants that benefit from the Chelsea chop, giving them stockier growth ( helpful if in a windy position) and frequent deadheading to prolong the flowering season.