Why lilac leaves turning brown

The best time to prune lilacs is a few weeks after their flowers have faded in the mid to late summer. Browning lilac bushes could also be the result of cold, wet spring weather followed by a dry, hot summer. Depending on the extent of browning you may have to cut the entire plant back to six or eight inches tall. Any more than 8 hours of direct sun and you run the risk of your lilac scorching and turning brown.

If voles are damaging your lilacs, there will be visible tunnels or soil will have sunken areas around the roots. Lilacs must have well-draining soil that can retain a little moisture and stay moist. Anything much outside of the range of a pH between 6. Lilacs are a wonderful landscape plant with gorgeous colors and an amazing scent but when your lilac bush begins to turn brown and look unhappy, it can be a sad sight to see.

Table of Contents. Detailed Guide. About The Author. Use these convenient icons to share this page on various social media platforms:. Signup Login Toggle navigation. Fruits and Vegetables. Question by joanne60 August 12, Answer from NGA August 12, You must be signed in before you can post questions or answers. Click here to join! Member Login: Username or email:. Pinterest Facebook Youtube Twitter Instagram. The leaves are turning brown and falling off.

There are many holes in the bark and we don't know what is causing it. Do you have any suggestions? Lilacs put on a wonderful display unless their leaves start turning brown.

And this is a warning that your lilacs need attention. But why are they turning brown? There are 5 causes why your lilacs are turning brown. In this article, I am going to discuss why the browning is happening and how to solve this. So, keep reading to treat your lilacs and turn the leaves back to luscious green.

It is also known as shoot blight. Blight makes brown spots on the leaves and stems. The spots later get bigger. Later the whole leaf turns brown and starts curling. When severely infected by blight the lilac flowers also turn brown. White lilacs are most vulnerable to blight. It can be hard to get rid of. Verticillium Wilt is also a fatal disease of lilac that turns the leaves brown. But it is not that common to happen.

This disease also weakens the plant very much. Your lilacs need the best copper fungicide to get rid of the blight and other leaf fungi Our Pick: Bonide Copper Fungicide. Apply it every weeks interval. Remove the infected leaves and heavily infested branches with a sharp pruning shear. If you do not remove the infected parts they will spread to the whole plant. As a result, the plant will wilt and die. Burn the debris or throw them carefully in the garbage.

Do not let the infected parts get in contact with other plants. Note : Use all the homemade solutions in a small leaf before spraying into the whole plant.

All of these may not be suitable to your lilacs. Plant disease-resistant varieties of lilac.