Japanese Lilacs
Q.

two trunk japanese lilac

Zone So. MN | Oderry added on July 29, 2015 | Answered

On a 2-trunk 3-year-old Japanese lilac tree, does it matter which one is cut to make a single trunk? I planted two mail order root Japanese lilac trees. Two years later one has a single trunk the other 2 trunks. Does it matter which trunk is pruned (equal diameter) and how close to ground?

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on July 30, 2015

I would wait until the tree is dormant to prune.
I would leave 1 to 2 inches of trunk. You may have sucker growth in the spring and would want to trim those away as soon as they grow.

https://www.gardeningknowhow.com/ornamental/shrubs/lilac/japanese-lilac-information.htm

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