Pruning Instructions For A Crape Myrtle Tree

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This article provides instructions for how to prune a Crape Myrtle tree
by Brett · Zone 4A · -30° to -25° F to Zone 10B · 35° to 40° F · Pruning · 29 Comments · August 29, 2010 · 619,831 views

Pruning Instructions for Crape Myrtle Tree


TOOLS I USE FOR PRUNING CRAPE MYRTLE

Pruning a Crape Myrtle
To the right is a drawing (Figure A) of a 4-year old crape myrtle tree as it may appear in late winter, when still in dormancy, and before new growth has begun to emerge. This tree has been properly pruned for 3 years and is ready to be pruned for the coming year. At the top of the branches you will notice seed pods that formed after last seasons blooms. In studying the diagram more closely you might notice where pruning cuts were made in previous years, and that wherever cuts were made two new branches emerged from beneath the cuts.


Pruning a Crape Myrtle - B
Figure B, to the right, indicates where to make cuts when pruning your crape myrtle tree. The rule of thumb is to trace down from the top of a stem (from the seedpods if the tree bloomed), to where that stem meets a branch. Using a pair of sharp bypass or lopper pruners make a cut about 6 to 12 inches or so above the intersection - never below the intersection. Alternatively, you can grab the tip of stem and bend it over, making your cut right at the point where the stem starts to bend. Either way, the stub that is left should be strong enough to support the new branches that emerge just below your cut. Repeat this process until all stems have been cut as is shown in Figure C below.


Pruning a Crape Myrtle - C
Figure C, to the right, shows a crape myrtle that has been properly pruned. All top stems have been pruned to 6 inches or so above the intersection where the stem meets a branch. Two new stems will emerge from beneath your cuts. By using this method of pruning you will be promoting twice as many branches every season - which means a fuller canopy and twice as many blooms. To further "clean up" your crape myrtle tree, you can prune suckers that grew from the trunk base, and twiggy growth that emerged up and along the main trunk(s).


Sandi Woodham

Sandi Woodham · Gardenality Seed · Zone 8A · 10° to 15° F
I am so happy to finally have this information, Brent. Each year when I prune my crape myrtles, I hope I am not masacering them, but they always come back lovely each year, and I just learned last year that you wait until late winter...early spring to prune these, where before I would risk pruning them too early. Your article is very informative, and those of us [and we are many] who love this true Southern garden treasure delight in, and thank you for your article on how to properly prune the crape myrtle. I purchased a beautiful Miami Crape Myrtle from [you] at Wilson Brothers a few years ago and it is stunning...I love tose deep, dark pink blossoms. I need to come by soon and pick up a few more...thanks Brent! See you at Wilson Brothers!

12 years ago ·
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Alison Grainger

Alison Grainger · Gardenality Seed · Zone 8A · 10° to 15° F
I have had a crepe myrtle in my front yard for 9 years...its about 8ft tall and flowers every year. This past year, we had the coldest winter in 25 years...we live in new mexico. There is no new growth on the tree this year, just suckers at the base...have I lost the tree?

12 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
It sounds like you might have lost the portion of the tree that grew above ground, but the roots are still alive. To test for whether it's alive, scrape a small section of bark from the branches. If green underneath, they might still be alive. If not they are dead and can be removed. If you want to regrow the tree, select one, three to five of the suckers/shoots to be the new trunk(s) and remove all the rest. Let these new trunks grow naturally this year, continuing to remove any new suckers that emerge. Then, in late winter or early spring of next year, top the trunks at a height where you want the canopy to start and remove any twiggy growth from beneath the cuts. New branches that will begin to form the new canopy will emerge just beneath where you make these top cuts. Hope this info helped. Good luck!

12 years ago ·
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Alison Grainger

Alison Grainger · Gardenality Seed · Zone 8A · 10° to 15° F
Brent,

Just an update on my Crepe Myrtle I thought I had lost. I cut away the old branches and left 3 new shoots as the new trunks. The flowers on it were amazing. Just remind me about how to get the canopy, when i decide next spring.

thanks

12 years ago ·
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Nicole Jacobsen

Nicole Jacobsen · Gardenality Seed · Zone 8A · 10° to 15° F
This is so helpful! I'm curious about corrective pruning for a crape myrtle that hasn't been pruned at all in at least two years? We've just moved into a new home and have two beautiful, mature, trees, however, they've got masses of scraggly, bare branches sticking out at the top and around the edges, extending beyond the budded branches. It bloomed briefly this summer, but quickly lost its blossoms and now looks like something out of a halloween scene. Any suggestions for helping it out this fall, or should we hang on until late winter and prune as you've suggested. Wouldn't want to harm it further, and we're novices at this! Thanks for any suggestions...

12 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Hi Nicole - Would you mind asking this question in Ask Experts. Look at the top of this page in the main menu tabs and click on the Ask Expert link. I can give a more detailed answer there. If you could upload a picture to your question this would be very helpful as well and allow me to give proper instructions. To upload a picture to your question: first ask the question, then you'll see the Upload Picture link to the right of where your name is on the page. It will be the "live" page where your question appears for all to see.

12 years ago ·
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Ann Lathrop

Ann Lathrop · Gardenality Seed · Zone 8A · 10° to 15° F
I live in Texas and we just bought a new house with crape myrtles. I was pruning my roses when a gardening crew came by to see if I wanted my landscaping taken care of. I didn't even know the names of many of the plants/shrubs/trees that were around my home so they were helpful in telling me what all they are. They did prune my trees and it's early November here. Yikes, did I make a big mistake? Is there any chance now I may lose my trees. I just learned it's best to prune them in spring and am mad at myself for not doing my research first. Anything I can do over the winter months to help protect the tree? It doesnt' get too cold here in Texas but we might have a few days over December and January.

11 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Hi Ann - November pruning of a crape myrtle or other trees might not be a big problem if the trees were already in dormancy. That being said, in the future, I would let a lawn maintenance company take care of the lawn and hire an arborist to prune and care for the trees and shrubs in your landscape. Otherwise, a person without the experience and knowledge can do more damage than good. You want to make sure that whoever does the pruning knows the right time and proper methods. My feeling is that your crape myrtles will survive, though I haven't seen how they pruned them. If you post pictures of your crape myrtles in Gardenality Ask Experts, and ask the question: "Were my crape myrtles pruned properly?"...or something like that, I'll be more than happy to take a look and give more opinions and advice as to what to do in the future. When you go to Ask Experts, just ask your question first, then after doing that you'll see the link to the right of where your name appears that allows you to upload a picture(s).

11 years ago ·
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Natalie Anne Thomas

Natalie Anne Thomas · Gardenality Seed · Zone 8A · 10° to 15° F
I REALLY APPRECIATE THE VISUALS.WITH THEM,I'M MUCH MORE CONFIDENT THAT I'M DOING IT CORRECTLY.MAKES ALL THE DIFFERENCE IN THE WORLD TO ME. THANXOMUCH BRENT,YOU ROCK!!!!!!!!! NAT

11 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Thanks for the compliment Natalie! Glad you found this article helpful.

11 years ago ·
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Brad Hall

Brad Hall · Gardenality Seed · Zone 8A · 10° to 15° F
Brent, I like a couple of people before me have purchased a home (north Texas) with a Crape Mertle tree in the back. we have never pruned this tree and it is getting rather large for its location. Since you have asked the previous folks to submit pictures in "ask the expert" I shall follow suit. Thanks in advance for your expertise.

11 years ago ·
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Carol Pietryk

Carol Pietryk · Gardenality Seed · Zone 8A · 10° to 15° F
HI Brent, A week ago I trimmed by myrtles in the front of the house. No problem. I went to trim the ones in the back yard (6 of them) and they all have started to bud on last years growth. Am I too late, should I leave them alone this year or can I still trim them. The branches have buds on them and on some depending on where on the branch, the bud has started to open. I live in VA near the RIchmond area. Thanks!

11 years ago ·
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Anne Fox

Anne Fox · Gardenality Seed · Zone 7A · 0° to 5° F
Hi, Brent: I have a Tonto that I planted in August 2010. It didn't do much last year, of course, but I'm hoping for a little something this year. At the moment, it's very bushy, and I'd prefer a more multi-stemmed small tree. Can I choose the four or so strongest looking branches and trim out the rest, or did I choose a variety not suited for that type of pruning? It's about 4 feet tall, maybe a bit more, and I'm in south-eastern PA, zone 7a-ish. Thanks!

11 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Hi Carol - You can still prune them if they are just starting to bud out. I pruned a few Natchez crape myrtle trees a little late a couple of years ago, when they were starting to leaf out, and they did fine. Hope this helped. - Brent

11 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Hi Anne - To answer your question about pruning out some of the trunks on your young Tonto crape myrtle. Yes, you can remove all but three or four of the trunks. It's easier and better to do when a tree is young. Three trunks is the optimum number for me, but 4 or five work well to. Just pick out the one's you want to keep and remove the rest cutting them as close to the ground as possible. Doing this might cause some suckers to emerge so you'll have to remove these until it stops producing them. This is a question that hasn't been asked yet in Ask Experts. If you don't mind, could you ask the question there as well? This way I can answer it there and other members and visitors who have the same question can find it in the Ask Expert database in the future. I might provide some more details in an answer there. To get to Ask Experts go to the top of this page and click on the green Ask Expert tab. In the near future this tab will change to just say "Ask." Hope this answer helped. - Brent

11 years ago ·
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Glenn Kage

Glenn Kage · Gardenality Seed · Zone 8A · 10° to 15° F
Hello Brent, thank you so much for the information in your article. I live in Missouri and purchased some crape myrtles while visiting my son in SC 3 years ago. I planted them when I returned. All three died off in their first winter. I pruned them back and was very excited to see them grow back and produce some beautiful flowers. This will be their 3rd summer and they are very thick. I checked them today 3/25/12 and they have quite a few leaves. My question is can I convert them from a multi-trunk "bush" to a tree?

11 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Hi Glen - you're very welcome. Regarding turning a crape myrtle bush into a tree. This might depend on the variety. There are dwarf crape myrtle only suitable as a shrub. But, if yours is one of the taller growing varieties, you can remove lower branches emerging horizontally from the trunks to a desired height to begin forming the tree. Small lower branches and suckers growing up from the base can be removed at any time of year. Larger branches or trunks should be removed in late winter, while the tree is in dormancy and before leaves emerge in spring. Hope this answered your question. - Brent

11 years ago ·
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Jennie Kelly

Jennie Kelly · Gardenality Sprout · Zone 8A · 10° to 15° F
Hi Brent - Is it possible to just cut then down about 3 to 4 feet and then just start over. I see my neighbors and they only have about 3 or 4 main branches on the bottom and I have about 8. Should I just cut down all but 3 or 4 and start again.

10 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Hi Jennie - If you want to reduce or thin out the number of trunks on your crape myrtle you can remove some of them. Three to five trunks is usually the maximum I allow, three being preferable. Be careful though when selecting the trunks you will remove. Make sure that removing them will not destroy the shape of the canopy. Regarding height, I rarely recommend pruning large, tall. mature crape myrtles down to short trunks with no upper branches. Only time I ever recommend this is when a crape myrtle has been pruned back too far for many years leaving large unsightly knuckles. In this case I sometimes suggest pruning just below these masses of knuckles in order to "start over"...then following the instructions as are laid out in article above. You can always ask questions in Gardenality Ask Experts and upload pictures to your question. This way I can see the tree and offer better advice. Hope this was helpful.

10 years ago ·
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Esther Hinojosa

Esther Hinojosa · Gardenality Sprout · Zone 8A · 10° to 15° F
good day to you sir!
i'm thankful to bump into this site and am interested in more information on crepe myrtles. i planted a four footer Natchez late last fall. it was doing fine till we got hit w/a sudden cold front. some leaves died but was hanging in there when the weather warmed up again for a few days till another burst of cold came and it went dormant as far as i knew cuz all the leaves crinkled up and nothing came after that. i'm noticing that it's not blooming anything right now while everything else in my yard has shown signs of life. i had mulched it and it doesnt feel stiff and dry but one twig did snap off and there wasnt any green. so i'm wondering if its dead. if so, do i just cut the whole thing down to its roots and see what happens? i can take it back but i want to not give up on it yet. also, do i take off the mulch now? its been very nice weather for the past week or should i wait in case there's another cold front? thank you for your advice :)

10 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Hi Esther - Though it's a rare occurrence, late freezes in spring can definitely cause damage to and can even kill young or newly planted crape myrtle that are emerging or have already emerged from winter dormancy. I would suggest using a knife or some other sharp tool to scrape small sections of outer bark off branches and trunks to see if there's any part of the tree that is still alive. Start at the top and work to the bottom. If you find no green underbark you could cut the trunk(s) back to the ground and wait to see if new growth will re-emerge. If by late spring there is no new growth it could be dead. Since there is no foliage on the tree it won't require much irrigation. Just keep the soil damp, but not wet or soggy. Hope this info was helpful. - Brent

10 years ago ·
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Norman Van Liew

Norman Van Liew · Gardenality Seed · Zone 8A · 10° to 15° F
My neighbor has a crepe myrtle that is 12 to 15 feet tall, he would like to cut it back to about 6 feet. Is that possible without totally ruining it. Don't think it has ever been pruned before..

7 years ago ·
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Gardenality.com

Gardenality.com · Gardenality Genius · Zone 8A · 10° to 15° F
Norman - It's possible...a crape myrtle tree can be cut back to any height, even to the ground, and it send out new shoots from where the pruning cuts were made. But, for several reasons, I don't recommend cutting a tall crape myrtle back by half its height. For one, doing so leaves tall unnatural and unsightly stumps. Since all the roots are still there underground, new shoots will emerge from just beneath where the cuts were made that will grow into very long branches which often weep over and and are susceptible to breaking off, especially when in bloom and there comes heavy rain and wind. If a crape myrtle is severely outgrowing the space it was inteded to fill, I would usually recommend removal and replacement with some type of smaller growing tree that won't outgrow the space...maybe a semi-dwarf crape myrtle that tops out at 10 feet or so? Another thing to consider is that cutting a crape myrtle tree back by half it's height won't really do much if anything to control it's size. The new shoots will grow as tall and wide as the tree was in the previous year. Reason being, as previously mentioned, all the roots that supported the larger tree before pruning are still there. These roots will basically reproduce the same size tree, just in a different shape or form....what I think is a less desirable form.So, if it were me, I'd rather live with the tree as is or remove and replace it. Another possible consideration is to cut the trunks back to the ground, starting over. Thing is, when cut down to the ground many, many shoots will emerge from the base and all but one or a few of these shoots will have to be removed in order to start the formation of a new single- or multi-trunk tree. The slected shoots could be allowed to grow to maybe 5 or 6 feet tall and then topped in late winter. Then the followinf lkate winter you'd start using the pruning techique described in this article. Hopw this was helpful. Let me know if you need more details.

7 years ago ·
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Karen Feyer

Karen Feyer · Gardenality Seed · Zone 8A · 10° to 15° F
I bought a 3 gal crepe myrtle late summer of 2015, it is very small about 2 ft. high with tiny branches, should it be pruned yet? How long does it take before it reaches a mature height? Thank you

6 years ago ·
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Chason Arthur

Chason Arthur · Gardenality Administrator · Zone 8A · 10° to 15° F
Thanks Flip! We are glad to have you!

5 years ago ·
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Shivani Hed

Shivani Hed · Gardenality Seed · Zone 8A · 10° to 15° F
Correct pruning a crape myrtle tree yields gracefully shaped trees with more blooms that are held upright on strong stems. And flowers arrive earlier than do those on unpruned or mispruned plants. Crape myrtles bloom on new growth, so prune them in early spring before they break dormancy.

4 years ago ·
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