Lilacs are gorgeous flowers with a heavenly scent that livens any garden or landscape.
However, if you are a gardening enthusiast, you will know that it is essential to prune flowering shrubs to encourage blooms for the next season. Lilacs are no different, and pruning them at the right time will ensure they grow into healthy, fresh blossoms.
So, in this guide, I’ll talk about when is the best time to prune lilac bushes and more!
Why Prune Lilac Bushes?
If you do not prune the bushes, they tend to flower only at the topmost branches. Then they'll look uneven, and you don't want that, do you? To prevent this, yearly pruning is required to maintain the shape of the shrub and keep an equal number of older stems and new branches.
When Is The Best Time To Prune Lilac Bushes?
Usually, lilacs can be pruned immediately after the flowering period is over, i.e., after the spring season. If you wait for too long after spring to start pruning, there is a good chance that the flowers will have already bloomed. Cutting them at this time may remove many of the flower buds for next year's flowering.
So, the earlier you prune, the more time you allow for the new shoots to appear and develop over the year. Also, some people like to wait till the second or third year of the bush before pruning. An easy indicator is when the stem measures more than two inches in diameter, the bush is ready for pruning.
You can use this same timing for larger lilac shrubs and smaller cultivations of lilac plants in pots. Just as I have discussed how annual pruning is the best way to care for lilac bushes, you will see good results for your tedious efforts.
When pruning is done right, the shrub can grow up to eight feet tall and have flowers blooming from every direction.
How To Prune Lilac Bushes?
Prepare your gardening equipment beforehand by arranging for a bypass pruner, loppers, and manure for the bushes. If the bush is tall, you may need a stepladder, and some tough stems may require a pruning saw.
As a rule of thumb, try to cut only one-third of the bush at a time to keep most of the shrub intact. Cutting any more during the course of one year may prevent the bush from growing tall. However, once you cut one-third of the plant length, you'll see that the plant gets enough room to sprout new branches that are fresh, vibrant, and healthy.
Ultimately, you need the lilac bush to continue growing 9 to 12 firm stems of one to two inches in diameters each. These stems will serve as the foundation of the shrub and should be strong enough to support smaller branches and new flowers.
Once you are ready with the tools, follow the steps listed below to prune the lilac bushes to perfection-
1. Cut Out Dead Or Weaker Parts
Some twigs and branches might have shriveled up over the year, and some leaves might have become yellow already. You can also pick out the branches that have developed rot and disease and carefully cut them off using pruning shears.
2. Remove Older Stems
After the spoiled parts of the lilac bush are out of the way, go for the general removal of older stems that are too tall. Instead of removing the topmost thinner branches, aim for removing the entire stem from the thick part directly. Lilac stems are pretty sturdy, so you may need a saw to hack at the older stems that are more than two inches in diameter.
This will improve the shape of the bush and allow space for new branches to thrive.
3. Prune The Rest
To get an evenly distributed arrangement of flowers, prune the stems so that the buds can face in outwards directions. If you prune just beyond the budding point, it will allow smaller branches to fan out and create a beautiful, dense lilac bush.
Final Words
With steps as easy as these, you can follow the same methods I use every year to keep my lilac bush looking fresh and pretty. As long as you prune right after spring, the lilac shrub should form a lovely shape and develop beautiful blossoms by the following year. Finally, don't forget to enjoy your lovely lilac flowers when they bloom.
See you later!