I have several varieties and have never to my knowledge suffered a loss. Two of them did take a year off when I disturbed them very late in the season, but they're still on my easiest to grow list. I dump compost on them each year at bud-set, and then mound with leaves and compost after they're frost-killed. The only time they seem to appreciate a little extra TLC is during bloom -then I'll give them extra water.
I used to give compost at emergence, but then I ended up with floppy plants -it's much better to do it after they've quit growing up. I sure do wish either one of those companies carried Walberton Yellow...I'd definitely buy more! Compact, bloom-filled clumps even in the dry dappled shade of a dogwood.
This clump was disturbed during bloom last year and I didn't notice much difference this year.
