Host an Event Volunteer Join Tickets

Support the plant database you love!

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
2 ratings

Saturday - January 23, 2016

From: Austin, TX
Region: Southwest
Topic: Pruning, Shrubs, Trees
Title: Reducing the Height of a Redbud Tree
Answered by: Anne Van Nest

QUESTION:

We have a very large, about 15-year old, Redbud tree that is growing so tall it's obstructing our view of the river. How and when can we prune this tree back so it does not hurt the tree.

ANSWER:

Cercis canadensis is a large shrub or small tree, 10-20 ft. in height. Yours has obviously reached a nice tall mature height.

All Cercis canadensis varieties, have clusters of flowers that appear in early spring before the leaves emerge and continue to bloom as the leaves develop. Leaves are heart shaped to kidney shaped, rounded at the tip, slightly wavy on the edges, and glossy, often with some hairiness on the underside. Flowers rose purple, in small clusters along the branches, appearing before the leaves, in March or early April. Fruit a flat, reddish brown pod up to 4 inches long and pointed at the tip. Deciduous leaves turn gold or red in fall. Seedpods are reddish purple and persist into the winter.

The best time to prune redbud (Cercis canadensis) is in the spring just after the flowers have finished. Alternatively, you can prune it in late winter while it is still dormant and before it starts to bloom but you will be removing some of the blooms. Stand back and take a look at the branching structure and select the ones that you want to keep. Look for branches that have U-shaped junctures instead of narrow V-shaped branch crotches that could break in gusty winds. Also consider removing branches that are crossing each other, growing into the center of the tree, or are damaged.

 

More Pruning Questions

Care for lantana in Katy TX
December 04, 2010 - Hello. I live in Katy TX and have a number of Lantana shrubs. How and when should they be cut back?
view the full question and answer

How do I prepare blackfoot daisies for winter in Austin, TX
October 19, 2010 - I have blackfoot daisies in my garden that have bloomed all summer. They are cascading out of the bed onto my lawn/grass. They have been so beautiful that I hate to cut them back. How do I prepare t...
view the full question and answer

pruning Chinkapin oak, Loquat and Monterrey oak trees
December 07, 2012 - What is the best time to plant a 45-65 gal. Chinkapin oak tree in Pflugerville. Also, when can i prune fig trees, Loquat trees and a Monterrey oak. Thanks for the information.
view the full question and answer

Shape of common ninebark in Canton MI
April 24, 2010 - I have planted one center glow ninebark in a triangular area in between my front walk and driveway. It looks a little odd just having one plant, but I originally did this b/c of the mature plant heig...
view the full question and answer

Should I top my scraggly magnolia tree? No
January 27, 2010 - Mr.Smarty Plants, I live in Crockett,Tx. My husband and I just bought this house. In the front yard I have a very tall,scraggly magnolia tree due to trees growing up around it. We have cut some of tho...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.