Q.Lilac (Vulgaris) Single Trunk
Help with tree; Lilac Vulgaris. Live in Oslo, Norway. Planted over 2 years before. Up to now only trimmed off flowers after fading with very light snipping of dead small branches. Thinking my options are for end of flowering this season: 1- leave as is do nothing at all. 2- cut way down after fall (shown with red lines on photo) 3- cut further down as I use to do with Crape Myrtles in Texas. It is missing fullness; I could be more patient for the fullness but it seems to need something more from me.
Certified GKH Gardening Expert
When the top growth reaches the height you want, cut the tips to encourage branching. Continue to remove the suckers from the lower trunk.