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

Monday - January 16, 2012

From: Los Angeles, CA
Region: California
Topic: Invasive Plants, Herbs/Forbs
Title: Horsetail Rush invasive in Santa Monica CA
Answered by: Barbara Medford

QUESTION:

Mr. Smarty Plants: I live about 3 miles from the beach in the Santa Monica area and have an 18inch deep planter area in my backyard that is adjacent to my garage. I like the look of horsetail rush. I see it used often in planters adjacent to buildings and think it would work but am concerned if it's roots are aggressive. Any input would be appreciated.

ANSWER:

There are 11 members of the genus Equisetum, horsetail, native to North America, of which 5 are native to California. Since they all have similar habits, we will use Equisetum hyemale (scouring horsetail) as an example. According to this USDA Plant Profile map, it is native not only to Los Angeles County, but also to every state in North America, Alaska and provinces in Canada, as well as Greenland, so we can be assured that it will thrive in your area. But that really wasn't what you wanted to know; you were asking if it could be aggressive, so we'll look a little further for that.

We already know that this is a moist places, standing water plant, and is considered definitely invasive in those spots. But we thought that perhaps being planted in a planter would minimize the danger of that. However, before you make a decision, you should read the comments in this Dave's Garden forum on Horsetail scouring rush. It is not a pretty picture.

You can get more information from this article on Equisetum hyemale by Earl J. S. Rook, including the fact that it spreads both by rhizomes and by spores.  This sounds like if the right hand don't get you, the left hand will. From the comments we saw, you probably are not too safe thinking you will just give it a try, and see how it does, because apparently, once you have it, you HAVE it.

Generally speaking, we feel that the best way to control invasive plants is to never plant them.

 

From the Image Gallery


Canuela
Equisetum hyemale

Canuela
Equisetum hyemale

Canuela
Equisetum hyemale

More Herbs/Forbs Questions

Planted bluebonnets won't prosper in Bluff Dale, TX.
April 24, 2013 - I have planted bluebonnet seed several years (this last year we planted inoculated seed) always the same results -germination, growth to 4-6 leaf stage, then very pale stunted growth, bronzing. soil t...
view the full question and answer

Yellowing leaves
May 06, 2008 - What causes yellowing of native garden plant leaves?
view the full question and answer

Which plants are resistant to dog urine in Ashmore, IL??
May 21, 2012 - Which native plants are resistant to dogs urinating on them?
view the full question and answer

The Unusual Foliage of Green Dragon
July 16, 2014 - I was hiking last week (July 7-11, 2014) in Hocking County, Ohio and while in a gorge along a river I saw the weirdest plant I've ever seen in my life. It wasn't weird because it had bizarre flowers...
view the full question and answer

Non-native daylilies and pachysandra in same area from New York City
April 07, 2012 - Will daylilies and pachysandra thrive if planted in the same bed, or will they harm each other?
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