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
1 rating

Thursday - June 26, 2008

From: Richardson, TX
Region: Southwest
Topic: Vines
Title: Regenerating old cross-vines in Richardson, TX
Answered by: Barbara Medford

QUESTION:

I have been asked to landscape a memorial garden at church. The garden is small and has a 10x 15-foot brick wall around the back in a c-shape in full sun. Planted on the wall are several very overgrown crossvine plants. Before going to the effort of taking out these old vines, I'd like to see if I could get them to bloom. Could you cut them back 4-5 feet now (June) and would they bloom on new wood?

ANSWER:

Bignonia capreolata (crossvine) is a Texas native, and an excellent choice for the location you have described. It is evergreen, or nearly so, attracts butterflies and hummingbirds, and is not nearly as aggressive as some of its related species, like Campsis radicans (trumpet creeper). Crossvine can nearly always be benefited by trimming or pruning, the question being what is the best time of year to do so? It is a very early bloomer, beginning sometimes in February and blooming until May. Pruning now will certainly encourage more blooming next Spring, but you can't expect any more than an occasional bloom from now until then. When you prune it depends more on the urgency of executing your landscaping. We would personally prefer not to prune in the summer, not so much because of the stress on the plant but on the gardener. However, if the vine is already in the way of other plants, we would say whack away. It is a very sturdy survivor, so you could trim it down at least 4-5 feet, give it some water and maybe a little fertilizer with phosphorus, and see what happens. Take this opportunity to thin it out, also, cutting crowded vines down to the root collar and opening the plant up to better air circulation. To keep it from growing where you do not want it to, continue to pluck out or trim off new sprouts from the ground and trim to keep in bounds. This will permit it to be a nice neat background to the other landscaping now, and a burst of color in the Spring.


Bignonia capreolata

Bignonia capreolata

Bignonia capreolata

Bignonia capreolata

 

 

 

More Vines Questions

Vine with red berries in North Carolina
November 04, 2011 - I found a plant/ vine pink teardrop with red berries in the Pusgah Forest in North Carolina and no on knows the name of it. I have a photo, can you help?
view the full question and answer

Germination of Purple Clematis from Junction TX
October 31, 2013 - I have some Purple Leather Vine seeds I want to share and want help learning to germinate. Can anyone there help me find interested recipients?
view the full question and answer

Care for large trumpet vine in Hugo MN
June 09, 2010 - I was recently given a large Trumpet vine that has been growing in the same place for the last 25 years.I have replanted it and given it a large trellis to grow on.I live in central Minnesota. My ques...
view the full question and answer

Finicky Trumpet Vine in Stockdale Texas
June 06, 2011 - I need help dealing with a very old trumpet vine. It was my grandmothers and she died in 79. It's always been beautiful till 99 when my grandmothers house burned down. It was right behind it. It cam...
view the full question and answer

Carolina Jessamine Toxic to Honey Bees?
January 20, 2015 - Is Carolina jessamine toxic to honey bees? I have read conflicting answers.
view the full question and answer

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