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

Care for a Campsis radicans in Yakima, WA
October 08, 2008 - I have a Campsis radicans it is in a 7" pot and the plant is 20" tall. It was a clipping given to me by a lady that is now out of town. My question is: I live in zone 6a so do I leave it in the p...
view the full question and answer

Use of non-native pothos for outside wall from Las Vegas NV
January 05, 2014 - I am in Las Vegas, NV. I live in a cottage-style apartment so I have a north facing porch with no one on the west so I get some there (and have an inherited cactus probably a yard all round) I would ...
view the full question and answer

Plant ID of growth on wild grape vine in New Bern NC
August 08, 2010 - There are purplish cone-shaped things growing on my wild grape vine. What are they?
view the full question and answer

Identity of vine growing in Naples Florida
September 15, 2014 - I live on country/residential property outside of Naples, Florida. This year I have had dozens of seedlings of some type of vine popping up all over. I have posted on a couple plant blogs looking for ...
view the full question and answer

Mexican species Orbexilum melanocarpum.
January 04, 2013 - This is not a question; just a note to supplement a previous MSP post answering a query about a source for Orbexilum. The "mountain pea" that the original questioner was asking about is the e...
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