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

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

Controlling Devil's Bit in Collin County, TX
June 05, 2015 - I live in Collin County and our pasture has a growing section of Devils Bit taking over everything. I've been using 2,4-D on it with some success. What is the best method of control for this ...
view the full question and answer

Negative and positive effects of invasive dandelions from Rama Ontario
January 12, 2012 - How do Dandelions have a negative impact of being a invasive and a Positive impact of being a invasive species ?
view the full question and answer

Invasive American Germander from San Antonio
May 14, 2012 - I brought home some American Germander (Teucruim canadense) - page 259 In Wildflowers of Texas by Geyata Ajilvsgi - from a railroad right-of-way. Since it is a member of the mint family it has becom...
view the full question and answer

Skunk cabbage for Houston TX
September 19, 2009 - Can you find skunk cabbage in the Houston, Texas area?
view the full question and answer

Problems with recently planted trumpet vine from Worcester MA
October 20, 2012 - Dear Mr. Smarty Plants, I have a question about my recently planted Trumpet Vines. First of all, I live in Massachusetts, zone 6. The soil is perfect for the two vines, which I bought from a local nur...
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