Rent Shop Volunteer Join

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
1 rating

Friday - February 20, 2009

From: Pflugerville, TX
Region: Southwest
Topic: Poisonous Plants
Title: Is Artemesia ludoviciana allelopathic?
Answered by: Barbara Medford

QUESTION:

I recently read that Artemisia ludoviciana is allelopathic to some other plants. I planted some last fall between a rusty blackhaw viburnum and a Mexican buckeye. Do you know whether it is phytotoxic to either of these? My viburnum has been thriving and I would not want to wait for it to show distress before pulling out the Artemisia.

ANSWER:

According to this USDA Natural Conservation Service website on Artemesia ludoviciana, it has no known allelopathic qualities. We did further research on Artemisia ludoviciana (white sagebrush), which is native to Texas and could find no indications that it had that ability. On the other hand, Viburnum lentago (nannyberry), although native to North America, is not native to Texas, so if it starts showing signs of distress, we don't think you can blame the Artemisia, but rather stresses caused by being non-native to your area.  Ungnadia speciosa (Mexican buckeye) is also native to Texas; if you were going to remove one of the three plants, we would vote for the Viburnum to go, as the Lady Bird Johnson Wildflower Center is focused on the use of plants native not only to North America but to the area in which they are being grown. 

Artemisia ludoviciana (white sagebrush)

Ungnadia speciosa (Mexican buckeye)

Viburnum lentago (nannyberry) - pictures


Artemisia ludoviciana

Artemisia ludoviciana

Ungnadia speciosa

Ungnadia speciosa

 

 

More Poisonous Plants Questions

Is Thalia dealbata toxic to dogs?
May 16, 2011 - A pond in a park frequented by dogs contains Thalia dealbata and I have seen numerous dogs eating the roots with relish, which we discourage, of course. They seem to really enjoy it though. Aft...
view the full question and answer

Is mulch from hackberry and chinaberry trees safe for flowerbeds?
September 17, 2014 - We had to remove several large hackberry and china berry trees. Is its mulch safe to use in garden and in flower beds?
view the full question and answer

Herbal properties of Dicentra formosa
January 23, 2016 - I would like to get some information on the Dicentra formosa plant such as the benefits of the plant. Is it poisonous? Can it be infused in an oil?
view the full question and answer

Toxicity of Yucca leaves San Marcos, TX
August 19, 2009 - Can you tell me if Yucca constricta leaves are poisonous? I ran into one at night and the next morning had a hive-like, VERY itchy rash.
view the full question and answer

Vines non-poisonous to dogs from Madison WI
June 09, 2013 - Are there any vines or crawlers that are non poisonous to dogs? Everything I am finding is poisonous, I want to plant some vines up a fence on their kennel run.
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.