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

Friday - October 16, 2009

From: Austin, TX
Region: Southwest
Topic: Best of Smarty, Non-Natives
Title: Is common yarrow a Texas native?
Answered by: Joe Marcus

QUESTION:

Dear Mr. Smarty Plants, Is common yarrow Achillea millefolium a Texas native? Please enlighten me.

ANSWER:

The answer to your question is yes ... and possibly, no.  Confused?  You're not alone.  The question of the nativity of Achillea millefolium (common yarrow) is a toughie.  The crux of the problem is how yarrow is classified taxonomically.  If you don't recognize any botanical varieties within the species then the answer is simple; yes, it's native to Texas as well as nearly all of North America, Europe, most of Asia, the Indian sub-continent, and even part of Mesoamerica.  In other words, it's a cosmopolitan species.

However, some taxonomic authorities recognize two or more botanical varieties.  Our authority, The USDA Plants Database (based on the Synthesis of North American Flora), recognizes 12 botanical varieties (not all native) as occuring in North America.  One botanical variety, Achillea millefolium var. occidentalis (western yarrow) was growing in Texas at the time of the arrival of the Europeans and thus is considered native to Texas.  Many garden varieties of Achillea millefolium are progeny of Old World botanical varieties and are not native to Texas or North America.

There are good arguments to be made for recognizing no varieties (lumping) and also for recognizing botanical varieties (splitting).  Because, by policy, we follow the lead of our taxonomic authority the decision is made for us.  In this case we recognize one botanical variety of common yarrow as a Texas native.

 

More Non-Natives Questions

Failure to thrive of non-native Confederate Jasmine in Tucson AZ
May 27, 2010 - My Star/Confederate Jasmine, a 30 foot long wall of it, for over 5 years now has one side of it losing leaves. I seem to remember it did this one other summer, but came back in?? What could be the pr...
view the full question and answer

Invasive nature of non-native Zoysia japonica grass
April 22, 2007 - I have been reading up on Zoysia grass and I am curious about its invasive nature. Is there a good way to keep it from going into my neighbors' yards? I was thinking about using some edging material...
view the full question and answer

Non-native Littleleaf Boxwood and native alternatives for Baltimore
January 06, 2005 - I am looking for a small hedge or shrub, that will look nice year round, and won't get too large. I live in Baltimore, MD. I have heard of Winter Gem Boxwood. Will this prove hardy in my area? H...
view the full question and answer

Late blooming Esperanza in St. Augustine FL
April 21, 2011 - I bought an Esperanza at a plant expo- I was told it was a Florida native Allamanda. It took me two years to figure out what I had. Mine grows 8 ft. tall and is huge! But it doesn't bloom until alm...
view the full question and answer

Problems with yellow lantana in Smoaks SC
June 05, 2010 - My yellow lantanas are about five years old - big and beautiful, but beginning last year, the blooms are small and part of the tiny petals are brown or black. Can you tell me what I can do about this ...
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
© 2015 Lady Bird Johnson Wildflower Center