Transplanting bamboo dug up with barely any roots?
I dug up a group of 4 bamboo culms from my neighbours yard, and 3 have barely any roots since we dug with a pickaxe and forced it.... The bottom has about 2 inch radius of roots for a 15ft culm. Two of them are connected so that may help or not. One of them has about 6 inches of rhizome. They're all about 15ft or so and I planted them in a mix of clay and horse manure in a 2ft wide bucket. Any ways to help ensure it roots and survives? Do I prune them now? It's Spring here in zone 7B with nightime temps around 40F and daytims occasionally reaching mid 60's. I have it supported against the branches of a pine so it's partially shaded.