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

Thursday - March 27, 2014

From: Fort Worth, TX
Region: Southwest
Topic: Invasive Plants, Non-Natives
Title: Why is Common Horehound missing from NPIN?
Answered by: Joe Marcus

QUESTION:

Hi there, I am not able to find Marrubium vulgare, i.e. Common or White Horehound, in the Native Plant Database. It grows abundantly on our ranch in Central Texas, and I am attempting to grow it in my yard in Fort Worth.

ANSWER:

Be careful what you wish for!

Marrubium vulgare is not listed in the NPIN Native Plant Database because it's not a North American native species.  It's native to northern Africa and Eurasia.  However, it has made itself quite at home in North America where it's an aggressive colonizer of livestock lots (domesticated livestock will not eat it) and associated areas.  It has also escaped from agricultural lands and can be found in great abundance in some wild areas all across North America.  Surprisingly, Horehound has not yet made its way onto any state's or the federal government's noxious weed list.  It's just a matter of time.

As for growing it in the garden, you will probably find it a bit too aggressive for your taste and once established, it's all but impossible to eradicate.  Moreover, your neighbors might not be very happy with you for introducing a plague into their gardens.  But whether or not to plant it in your garden is for you to decide.

 

More Invasive Plants Questions

Invasive trumpet vine from Fredericksburg TX
August 03, 2012 - I have a large trumpet vine growing on a dead tree stump. My problem is that new baby trumpet vines are coming up all over my yard. I mow them, but is there anything I can use to prevent new trumpet v...
view the full question and answer

Splitting bark on non-native mimosa from Buda TX
June 24, 2012 - What would cause my Mimosa tree to have splitting bark. I've only lived in this house for 8 months and am learning about this tree. The other tree seems fine. It looks as though it split and then ...
view the full question and answer

Ground cover for Central California from Concord CA
July 19, 2012 - I live in a part of California where the summers can be very hot and dry but quite cool and wet during the rainy seasons in the wintertime. The soil around my home is very dry, rocky and infertile. I...
view the full question and answer

Difficulty with Clay Soil from Palm Bay, FL
August 22, 2012 - I had a very nice little native shady area behind my house for over 40 years, but now it has been cleared except for a 100 foot tall live oak in the center of this raised mound (50' x 80'). I've be...
view the full question and answer

Weeds in Buffalograss from Edmond OK
September 20, 2012 - We have a patch of buffalograss surrounded by patio/flower garden/vegetable garden. We like B-grass, but are getting a lot of weeds despite preemergents, and some bermuda had appeared. Are there h...
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