En EspaŅol

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
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Saturday - January 05, 2008

From: Kingsland, TX
Region: Southwest
Topic: Vines
Title: Promoting bloom of crossvine
Answered by: Barbara Medford

QUESTION:

I planted a crossvine a couple of years ago and it has grown quite well, climbing well up the Mesquite tree it was planted under. However, it has never bloomed. I was really looking forward to those lovely flowers. What do I need to do to coax a bloom?

ANSWER:

Bignonia capreolata (crossvine) is an evergreen flowering vine that can grow to 50 feet in length. There are two or three possibilities as to why you are not getting blooms. The first, we suspect, is that it has not matured enough to bloom yet. It sometimes takes several years before the gorgeous hummingbird-attracting blooms begin to appear. The second possibility is that it is not getting enough sun. While this plant will tolerate shade, it does much better in full sun. Sometimes a crossvine will begin to bloom when it gets to the top of its support or trellis, and gets into the sunlight. And, finally, you may be giving it too much nitrogen fertilizer. It likes a lot of water and nutrients, and general purpose fertilizer should be added to the soil every two to three weeks. Switch to a high phosphorus formula just before the blooming period. Too much nitrogen in fertilizer will promote lots of green leaves in a plant, at a cost to blooms. You should also be warned that this plant can become invasive. It will reseed and if you do not want all those additional plants coming up, remove the seed pods before they complete development.

 


Bignonia capreolata

 

 

 

 

More Vines Questions

Discouraging Poison Ivy
June 27, 2015 - Is there a fern that discourages poison ivy from growing?
view the full question and answer

Evergreen vine for Lake Jackson, Texas
March 06, 2009 - I have some lattice for privacy that I would like to cover with an evergreen vine or ivy. One is facing to the west, the other to the east. What would you suggest?
view the full question and answer

Fast-growing vines for the Texas Hill Country
January 17, 2015 - What are the best fast-growing vines for our Hill Country location? The vine will be growing on a stucco wall, so we don't want the vine to grow into the stucco and destroy it. Location has morning ...
view the full question and answer

Problems with crossvine from Semmes AL
January 06, 2013 - I have a 3 year old cross vine (tangerine beauty) and the leaves have started turning black and falling off the plant. I have two plants growing on the same pergola (opposite ends) and the second plan...
view the full question and answer

Difference between invasive Chinese and Japanese wisterias and native wisteria
September 12, 2014 - Dear Mr or Ms Smarty Plants, Is there any way I can tell for sure if my wisteria is native? I bought it at a place when it was in bloom that sold a lot of native plants. I Would like to know for sure...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2015 Lady Bird Johnson Wildflower Center