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

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

Vine like blackberry with 3 leaves & thorns in Florida
July 08, 2009 - What vine looks like a blackberry vine but has three leaves and thorns?
view the full question and answer

Plants under Oak Trees in Austin TX
December 10, 2012 - Half of my small yard is in the shade of one big live oak and one kumquat. Nothing I plant grows in this shade. The other half of my yard gets sunlight. It is planted with Jasmine grass which grows w...
view the full question and answer

Are grape vines killing oaks in San Antonio
December 20, 2009 - I have some large live oaks growing in sand on some property I have south of San Antonio that are slowly dying one limb at a time. Some large mustang grape vines are growing in and around them and I ...
view the full question and answer

Groundcover Under Maple Tree in Ottawa That Takes Foot Traffic
April 19, 2013 - Hi, I am looking for a groundcover to put under a large maple tree that will be alright for kids to run about on and will be happy in the Ottawa climate. Your other answers to similar questions have b...
view the full question and answer

Blooming but not berrying American bittersweet from Pendleton IN
May 29, 2013 - I have had a bittersweet plant for years, it blooms but not berries. How do I tell if it is male or female so I can buy the opposite? It is currently blooming.
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