What's your question? Ask

Lilac Bushes

Q.Why Are Lilac Flowers Growing Underground?

Zone Zone 5 | Melissaslack91 added on June 4, 2021 | Answered

I have a mature 10 foot lilac and the flowers on the actual shrub are gone but I have lilac flowers popping up on the ground around it. I dug around the one and it was in flower around 4″ inches below the soil level and appears to be growing from a root. I noticed the biggest one nearly two weeks ago and it’s still in flower. Has anyone ever seen this and what caused this?

A.Answers to this queston: Add Answer
Certified GKH Gardening Expert
Answered on June 7, 2021

Because of the way the crown is situated in lilacs (underground), and the flowering habit (on new wood) this can be a common occurrence. The soil has kept the area around the new shoots at a suitable temperature and moisture to produce flowers.

You can choose to leave the "suckers" or you can remove them. Either way will not harm the shrub. Removing them creates a more compact, tidy shrub. Leaving them creates a broader, more "shrubby" shrub.

Here are some articles that will give you more information about the plant:


Was this answer useful?

Log in or sign up to help answer this question.

Did you find this helpful? Share it with your friends!

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?
here are more questions about...
Lilac Bushes
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert