I made eight clones of my black raspberry heirloom plants a year ago. Now they are well rooted in their buckets & growing tentacles, I am following advice from this great retro book:
The Home Orchard by R.G. Hamilton
Published by the NZ Department of Agriculture – 1970s?
Following their advice, I am trying to build a raspberry hedgerow
Seven ‘free’ raspberry plants in their new homes…
with Whitakers cocoa husk mulch
Good exercise!
Now sunlight, water & time can do the work!