En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - What is wrong with my cross vine (Bignonia capreolata?

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

Sunday - March 08, 2009

From: Schertz, TX
Region: Southwest
Topic: Vines
Title: What is wrong with my cross vine (Bignonia capreolata?
Answered by: Jimmy Mills

QUESTION:

I have a crossvine (Bignonia capreolata) that has grown and bloomed beautifully for about 7 years. Then last year the bloom was significantly less and the bottom growth almost nonexistant. The leaves developed dark red round spots on them. New growth looked chlorotic. I have given it iron chelate and Gardenville's organic fertilizer, along with some molasses and seaweed. No change. I sprayed it with potassium bicarbonate, thinking it had a fungus or mildew. No change. It gets about three quarters of a day of sun. The only pruning I've done is at the top to keep the vine off the roof. It is planted at the roof dripline, so it gets water whenever it rains, plus I soak around my foundation. This spring it is looking really bad. I don't want to lose it. What is going on?

ANSWER:

One way to approach this is to try to determine what has changed with the plants growing conditions since year seven. Cross vine, Bignonia capreolata (crossvine) grows in moist, well drained soil and in sun or partial shade. Is the soaking of the foundation a recent addition? Receiving too much water could affect the leaves. The red spots sound like a fungal problem. There also could be a pathogen (fungal or bacterial) attacking the  the roots in the soil. I'm going to suggest that you contact your Guadalupe County Extension Agent who can give you instructions for sending a plant and/or a soil sample to the Texas A&M Plant Disease Diagnostic Lab.


 

 

More Vines Questions

Failure to bloom of Campsis radicans in Elkins WV
June 28, 2011 - Dear Mr. Smarty Plants, We live in a very cool climate of West Virginia, in the mountains, and it seems impossible for our Campsis radicans vines to flower! Perhaps the growing season is too short? W...
view the full question and answer

Low Ground Cover for Steep, Shaded PA Site
February 17, 2014 - I am located in Downingtown, PA, right on the border between Zone 6 and 7. Please provide a recommendation of a native ground cover for the following conditions: steep slope (greater than 45%), full s...
view the full question and answer

Non-native vines poisonous from Bakersfield CA
May 17, 2013 - Are pink bower vines and stars and stripes mandevilla toxic to dogs?
view the full question and answer

Restoring the woods in Central Austin.
May 08, 2012 - I live in Austin, south central between Red Bud trail close to the low water bridge and Bee Caves road. My question: I want to make the wooded sections of my yard attractive. They have filtered sun...
view the full question and answer

Is Bignonia capreolata (crossvine) poisonous?
March 18, 2012 - I need to know whether any part of Crossvine (Bignonia capreolata) is poisonous. Am thinking of planting it at an Elder Day Center for people with memory problems and the director insists - no toxic ...
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