En Espa—ol

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 - December 21, 2012

From: Arnold, MO
Region: Midwest
Topic: Grasses or Grass-like
Title: Low-maintenance grass for retention pond
Answered by: Nan Hampton

QUESTION:

I would like to know what would be a low-growing grass to put down for a water retention pond. We have clay and rocky soil. The incline of the sides of the retention pond are about 20 feet with grass bottoms and they hardly ever have water in them. I'm looking for something that is low-maintenance that would only have to be cut once a year or less.

ANSWER:

Below are ssuggestions for several grasses and sedges that should work in your retention pond.  They are all native to Jefferson County or an adjacent county in Missouri.

Bouteloua dactyloides (Buffalograss) would be an ideal solution as long as the retention pond doesn't hold water often.   It grows to only 8 to 12 inches, requires no fertilizer or additional water.  It does occur in neighboring St Louis County.  Here is one of our How to Articles, Native Lawns: Buffalograss, with more information about the grass and how to plant and care for it.

Digitaria cognata (Carolina crabgrass) is a relatively short grass that is native to Jefferson County.  Here is more information from University of Michigan Herbarium and from The Samuel Roberts Noble Foundation.

Hordeum jubatum (Foxtail barley) is an attractive grass that grows to about 20 inches high. Here is more information from Illinois Wildflowers and from Outsidepride.com in Oregon.

Sedges are also a possibility.  They usually don't grow as tall as grasses and will usually tolerate growing in very wet soil which could occur in the retention pond.  The ones listed below are evergreen or semi-evergreen.

Carex texensis (Texas sedge) is evergreen.  Here is more information from Niche Gardens in North Carolina and San Marcos Growers in California.

Carex blanda (Eastern woodland sedge) is evergreen.  Here is more information from Illinois Wildflowers and from Missouri Plants.

Carex pensylvanica (Pennsylvania sedge) is semi-evergreen and grows to only 6 to 8 inches high.  Here is more information from Illinois Wildflowers and from American Beauty Native Plants in Delaware.

You might try a combination of grasses and sedges at first to see what grows the best in your retention pond area.  It will depend on the amount of sun, the soil type and water availability.

 

From the Image Gallery


Buffalograss
Bouteloua dactyloides

Carolina crabgrass
Digitaria cognata

Foxtail barley
Hordeum jubatum

Texas sedge
Carex texensis

Eastern woodland sedge
Carex blanda

Pennsylvania sedge
Carex pensylvanica

More Grasses or Grass-like Questions

Grasses in Allen County, Indiana
September 25, 2010 - Do you have images of Northeast Allen County, Indiana grass specimens with i.d.? I am a student teacher and am putting together a nature hunt list for my students. Thank-you,
view the full question and answer

Hillside Erosion Control for Gainesville GA
August 07, 2013 - I have a steep bare hill and the runoff from it is heavy this year. I need help with a fast growing groundcover that will help control erosion and runoff. Planting on the hill is difficult because you...
view the full question and answer

Winter expectations for Buffalograss (Bouteloua dactyloides)
October 08, 2007 - I planted some buffalo grass (from seed) in April of this year. Iíve got a nice patch now, though itís starting to brown up some. Iím wondering what to expect from this patch over the winter- will i...
view the full question and answer

Sources for native plants from Austin TX
December 19, 2012 - Hello. I am currently planning a Texas native plant garden. Unfortunately, I cannot seem to find the seeds/bulbs/roots/plants for some of the natives at local nurseries: Indian Ricegrass (Achnatherum ...
view the full question and answer

Would Habiturf or buffalograss work in Charlottesville VA
July 18, 2012 - Hello, I am looking for an alternative to traditional turf grasses. I stumbled upon some information on your site about buffalo grass and LBJWC's 'Habiturf' mix and would like to know if this w...
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