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

Rash from non-native potato vines
July 21, 2010 - Here in No. CA we have two potato vines that over the last 5-6 years have flourished gloriously. Just this year, we went to prune them (as we normally do once or twice a year), and both my husband an...
view the full question and answer

Vine for planter box in Berkeley CA
September 29, 2012 - I live in Berkeley, CA and want to plant a vine to crawl up a trellis on my deck. It gets sun most of the day. I need to use planter boxes because there is only patio below and would like something ...
view the full question and answer

How to propagate Clematis texensis in Austin, TX?
May 14, 2012 - How do I propagate a Clematis texensis Buckl. Scarlet leatherflower from the seed pod?
view the full question and answer

Do monarchs like Cynachum laeve in Austin, TX?
May 29, 2012 - I have found what I believe is Honeyvine (Cynanchum laeve) growing in my yard here in Austin. I tried using the LBJWC plant data base and could not find it. I also found the plant with a diff...
view the full question and answer

Ripe fruit of Melothria pendula (Guadaloupe cucumber)
July 22, 2014 - I see the pictures of the guadualupe cucumber plant. The fruit is still green. When it matures does it look like a small tomato? I have noticed the vine when the fruit is ripe. This is in McLennan C...
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
© 2014 Lady Bird Johnson Wildflower Center