Thank everyone. I know that I have probably shown these as they bloom, but I have started making logs of each year of which trees bloomed.
Ken, I have not done much tap root cutting. Might try some this spring when young ones are really starting to grow again. Best time for rejuvenating roots.
It has always been recommended to not transplant seedlings until they have at least 5-6 true leaves and I would think no earlier for root pruning. I imagine this is when it would be done anyhow, as we are transplanting.
I think with the cutting of the tap root, it will give more roots from around the outer most part of the "future caudex", giving it a wider and more appealing look.
Rick
