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 - September 19, 2010

From: Horseshoe Bay, TX
Region: Southwest
Topic: Non-Natives
Title: Dying branches on non-native buddleias in Horseshoe Bend TX
Answered by: Barbara Medford

QUESTION:

Our Black Knight buddleias are developing branches that die. The leaves just turn brown and the whole branch dies then another and finally the whole plant dies. Do you know what could be causing this? Thanks

ANSWER:

There are 5 members of the Buddleja genus listed in our Native Plant Database as native to North America, and all 5 are also native to Texas. The Buddleia davidii is native to China and Japan, and therefore falls out of the range of expertise of the Lady Bird Johnson Wildflower Center, which deals with plants native not only to North America but also to the area in which they are being grown. 'Black Knight' is a trade name for a selection of Buddleia davidii.

This article from  Floridata Buddleja davidii 'Black Knight' will give you some information on care of the plant. From the US Geological Survey, Biological Resources Division, you can find material on pests and diseases of this plant. In particular, note this extract from the article:

"Pests and diseases: Buddleia have very few pests but are susceptible to caterpillars, weevils, mullein moth, spider mites, fungal leaf spots and dieback."

After reading these articles, you will likely find that the soil or excess moisture in the soil with poor drainage is causing your plant problems.

Pictures of native Buddleja from our Native Plant Image Gallery:


Buddleja marrubiifolia

 

 

 

More Non-Natives Questions

Non-native tomato plant in Austin
August 30, 2010 - I have an upside-down tomato plant, started on July 4. For several weeks there have been 7 green tomatoes, with no further growth or ripening,despite daily watering. Am I doing something wrong?
view the full question and answer

California plants poisonous to dogs from Sacramento
July 01, 2012 - Found dodonea viscosa purple. Is it poisonous to dogs? Also Gold Star Potentilla. Going drought tolerant and need small trees, shrubs and plants not poisonous to dogs for sun and partial sun.
view the full question and answer

Non-native Alocasia in Fayetteville, AR
January 11, 2010 - I am trying to find out information on a plant that I received as a gift called an Alocaiso Plant, It a green, large, shiny green leaf plant with cream colored veins. Very beautiful and I would think...
view the full question and answer

Weeds invading non-native Asian Jasmine in Dallas
April 26, 2011 - Weeds have invaded my Asian Jasmine. What can I do to kill the weeds and not the Asian Jasmine?
view the full question and answer

Pictures of Bastard Cabbage from Dallas TX
April 07, 2012 - HI! Re your March 12 posting: The USDA Plants website pictures two very different looking plants identified as Rapistrum rugosum (bastardcabbage). Would you please post a photo with leaf and bloom ...
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