Lilacs will not bloom.
I have lilacs that never bloom, even though they have at least half sun during the day. Is there something I could feed them to encourage blooming?
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2 Answers from these members:
I know how nice flowers can boom during the summer. While you are waiting for your expert answer, I did manage to find a link that will provide you with some good information to help you with your flower project. I hope my link is useful.
by Joseph Perez
Are your lilacs old? Old wood doesn't flower as well as new wood, so you could try renewal pruning, in which you remove 1/3 of the biggest canes (branches that grow from the ground) a few inches above the ground, repeating each year for a total of three years. ---- Another option is rejuventation pruning, in which you cut the entire plant back to 4-6 inches from the ground. The bushes will grow back (really) -- it takes about 3 years for them to get full and tall.
by ERIN HYNES
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