En Español

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

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

Plants for pavilion over fountain in Washington State
December 26, 2008 - I have a tall fountain in a 7 foot square which is surrounded by pavers. Inside the 7' square there is about a 2' mulched soil bed around the center fountain and an iron type pavilion that goes up h...
view the full question and answer

Questions about Clematis virginiana in Austin, TX.
August 26, 2011 - Hello! I have a few questions regarding Clematis virginiana. Is it scented? Does it attract birds and butterflies? Do only female flowers get the feathery plumes? If yes, how do I know if ...
view the full question and answer

cultivating the invasive Passiflora incense
July 16, 2014 - Hello! I have been collecting passiflora for a while now, recently I purchased a "P. Incarnata" from a local nursery where I have gotten a few other species to grow along my herb garden recently. No...
view the full question and answer

Blossoms but no fruit for gooseberries in Enoch UT
January 16, 2010 - My gooseberries always get loads of blossoms, but I never get fruit. I think they need more sun, and thus, want to transplant them to a sunnier location. What (and when) is the best way to do this?
view the full question and answer

Re-landscaping in Stephenville, TX.
November 17, 2012 - I prefer native plants. We are re-landsacaping, so I need grass, ground cover, vines and flowers to plant in our back yard. We have many trees and the whole yard is shady. A small area might be con...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center