Posted: 24/03/2013 at 16:25
The best mulch for me is seaweed....used to get loads of it and use it on everything. Mushroom compost too....often got few tons of it...not for ericaceous plants though.
For hellebores, hostas, astilbes, astrantias etc I use concentrated manure mixed with garden compost
Bark chips seem to create hiding places for woodlice, slugs, and other nasties who love the crevices created by this form of mulch so I tend not to use it much now