Posted: 07/04/2013 at 22:43
They need vine weevil treatment...Provado or nematodes. Don't use both. It's either or. Viine weevils are number one enemy.
They need splitting every couple of years and deep planting.
I remove all leaves in late winter and clean up the crowns then feed.
They mostly need partial shade and good soil
The yellows need more shade,
Paradoxically, nut, palace Purple ....an old variety....is poor for me. It seems more vulnerable to sun scorch and disease.
Berry Smoothy, obsidian, plum pudding, marmalade, amongst others are excellent for me