A summer with extreme weather will yield fewer flowers.
The best time for pruning lilac bushes is right after their flowering has ceased.
For this reason, you need to be highly careful with the timing.
If you are pruning lilac trees or shrubs entirely to within inches of the ground, it is best to do so in early spring. New shoots will develop during the regular growing season as long as there are a few healthy shoots left. For lilacs, the recommended method is generally to remove one third of the old wood each year immediately after flowering and shape the shrub over a number of stumpdrop.club course, you can prune in the fall if absolutely required.
Jul 08, In general, by the time a stem reaches more than 2 inches in diameter, it should be pruned. If you are diligent with annual pruning of your lilac, the shrub will grow to about 8 feet tall with flowers throughout the branches. The time to prune mature lilac plants is just after the flowers have faded in the stumpdrop.clubted Reading Time: 7 mins.
Can you prune in the fall? Pruning is also a way to encourage growth. Your tree isn’t trying to grow in the fall, it is trying to hunker stumpdrop.club, pruning will weaken the plant.
It is best to wait to prune until the dormant season next spring. You may ask, Can I prune lilac in October?
For lilacs, the recommended method is generally to remove one third of the old wood each year immediately. Jun 10, To prune lilacs, get to work in the spring: cut fresh flowers for bouquets, nip off the longest stems, and thin out any weak stems at the base. Avoid pruning late in the summer or fall since doing so can limit future stumpdrop.club: K.