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

Oak trees shedding leaves in Denton TX
May 27, 2012 - In Denton, TX we have two mature Quercus buckleyi. It is May 11th 2012 and one of these trees has been shedding green leaves for the last week. The only changes we have made are: planted English ivy...
view the full question and answer

Huckleberries and blueberries from Vancouver WA
April 14, 2013 - Can you plant a blueberry next to a huckleberry?
view the full question and answer

Need a vine to cover a 8' cinder block wall in Fullerton, CA.
August 23, 2010 - Hi- I have a 8' cinder block wall that gets full sun, and need to find either a flowering shrub that would cover, or a vine that wouldn't be to hard to manage, or would not need to use a trellis....
view the full question and answer

Trailing milkvine, Matelea pubiflora, identified from seed pod
November 10, 2006 - I have a vine that has a seed pod that looks like okra. Inside the pod is a small flat seed and a cotton-looking fiber. Please help identify, if possible.
view the full question and answer

Containerized honeysuckle for Dassel MN
April 05, 2013 - We are renting our house but I would like to enjoy my own honeysuckle. Can they be planted in a big pot so that I can take it with me when we move.
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