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

Advice about lavender (Lavandula sp.)
June 03, 2008 - I recently visited a Lavender Farm just outside Gainseville Texas. I was hooked. However, when I started reading about growing Lavender I found that you should have well drained alkaline soil. Since...
view the full question and answer

Failure to bloom of tropical plumeria
July 04, 2008 - I have had my plumeria for the past five years. The first three years it bloomed but has not the past two. The plant is healthy and continues to grow but will not flower. It seems to be very health...
view the full question and answer

Problems with non-native Callery Pear tree from Louisville KY
June 03, 2013 - I have a Cleveland select that has a bark issue. It is on its second season and I just saw this. It looks like the bark is bubbling up kinda and then wants to peel off the main trunk. I have a picture...
view the full question and answer

Dying foliage on non-native Otto Luyken Laurel from Georgetown KY
April 09, 2014 - I have 5 luken laurel scrubs planted around foundation. They have done very well until this last winter..the foilage is now brown and crispy. Will they come back? Do I need to prune back the damage...
view the full question and answer

Source for nitrates and phosphorus (P205) for lawn care
July 04, 2008 - I recently supplied soil samples from my back yard to my local extension here in Austin. I have a hybrid Bermuda turf grass (TIF 419) that has had its share of ups and downs, and wanted to assess the ...
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