Lilac Bush Not Blooming

By Ellen Brown

Q: I have a lilac bush that has never bloomed. I have had it for 10 years, it gets green leaves and that is all. I have cut it back as I was told to do, but I still don't get any blooms. Please reply with anything you think may help.

Ad

I am in zone 6

Thank-you,
JMS

A: JMS,

You can try using the process of elimination. There are five main reasons that lilacs fail to bloom: insufficient sunlight, too much nitrogen fertilizer, improper planting (planted too deeply), improper pruning (pruning at the wrong time) or winterkill of the flower buds. If you are fertilizing your bushes (or near your bushes), stop. Lilacs set their flower buds for next year on this year's growth. If you pruned them last season in late summer, say late July or August, you may have removed the flower buds for this growing season. Also, lilacs will typically not bloom the season after a harsh pruning, so you may need to wait until next year before you see flowers. If you suspect winter damage to your flower buds, you can only hope for milder winters or plant a hardier variety. Pulling some soil back from the roots will help if you think it may be planted too deeply. Lilacs need full sun to flower. You might take a sucker from your lilac bush and try growing it in a new location.

Ad

Ellen


Q: I have lilac bush a friend gave me. I planted it 9 years ago and it has never bloomed. Please help. I don't know what to do.

Hardiness Zone: 5b
Cheryl Hubbard from MO

A: Cheryl,

There are several reasons lilacs don't bloom. The most common problem is a lack of sunlight. In order to bloom, lilac bushes need at least 6 hours of sun per day. If your lawn (or your neighbor's lawn near your lilacs) is frequently fertilized, your lilacs may also be getting too much nitrogen. Nitrogen promotes lush foliage, while inhibiting flowering. When planted in decent soil, lilacs usually do just fine without fertilizing. If they need it, use a fertilizer with a high ratio of nitrogen (second number) and apply it in the early spring. Organic sources include bone meal and fish emulsion. Incorrect pruning is another common problem. Pruning should be done no later than mid summer (July) or you risk cutting off next years flowers. You may have also planted your lilacs too deeply. If you think this might be the case, pull back some of the soil so the tops of the roots are slightly exposed. Also, you don't mention what type of lilacs you're growing. Common lilacs need cold winters in order to set their flower buds, but these same cold winters can kill the buds of less hardy varieties. Finally, lilacs prefer slightly alkaline soil (pH 6 to 7). Having your soil tested is the only way to know whether or not it's too acidic.

Ad

Hope this helps.

Ellen

About The Author: Ellen Brown is our Green Living and Gardening Expert. Ellen Brown is an environmental writer and photographer and the owner of Sustainable Media, an environmental media company that specializes in helping businesses and organizations promote eco-friendly products and services.

Answers:

Lilac Bush Not Blooming

I have the same problem with my lilac bush. My grandmother told me that it will not bloom unless there is another lilac bush near. I am not sure how "near" it needs to be. I have checked out other blooming lilac bushes and there's always another bush near by. I am not sure how true this is, but Grandmother has been around for 83 years and she can grow anything. (05/01/2006)

By razmataz1a

Lilac Bush Not Blooming

I was having the same problem. I was told to dig a very narrow trench, that was about as deep as your shovel would go, in a circle around the bush so I did this and it worked. (06/25/2007)

By Faye

Lilac Bush Not Blooming

I have 3 lilac bushes, I live in Wilmington NC., they bloom. What I have found is they love horse poop. I have them in full sunlight, one bush really blooms the other one has little blooms, but it still blooms. (04/23/2008)

By Jeannie C.

Comments

Add your voice! Click below to comment. ThriftyFun is powered by your wisdom!

Related
In This Article
Lilac Blooming
Lilac Not Blooming
Categories
June 24, 2009
Guides
Lilac Bush
Lilac Leaves Turning Yellow
Transplanting a Butterfly Bush
Transplanting a Butterfly Bush
Winterizing a Butterfly Bush
Winterizing a Butterfly Bush
Lilacs growing near a white fence with a weathered outbuilding in the background.
Transplanting Lilac Bushes
More
🎄
Christmas Ideas!
Facebook
Pinterest
YouTube
Contests!
Newsletters
Ask a Question
Share a Post
You are viewing the desktop version of this page: View Mobile Site
© 1997-2016 by Cumuli, Inc. All Rights Reserved. Published by . Page generated on November 30, 2016 at 3:13:41 AM on 10.0.0.222 in 2 seconds. Use of this web site constitutes acceptance of ThriftyFun's Disclaimer and Privacy Policy. If you have any problems or suggestions feel free to Contact Us.
Loading Something Awesome!