By Gailc
Lincolnshire,
United Kingdom 
I know you can trim the lead out of a betula pendula to make it multistemmed, but how old should the tree be and what height do you trim it to please?
Thanks, Gail
8 May, 2011
We did ours when it was just a sapling of about 3 to 4 feet high and I cut it back to about 6 inches from the ground. Then, I only allowed 4 new stems to grow and have carried on removing basal growths to keep the main stems clear.
8 May, 2011