Lilac Bushes

Question

Have had lilacs for almost 30 years….first year I had very few blooms although bushes are healthy. Could I have trimmed bushes at the wrong time? We had beautiful weather early April and I did a little trimming. I live in southern NH, zone 5. Thanks for all your tips.

Answer 1

This should be done in very early Spring. Pruning late is the most common reason for failure to flower.

Here is an article that will help:

https://www.gardeningknowhow.com/ornamental/shrubs/lilac/pruning-lilac-bushes-when-to-trim-lilac-bushes.htm