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 - June 06, 2013

From: Asheville, NC
Region: Southeast
Topic: Erosion Control, Groundcovers, Grasses or Grass-like, Herbs/Forbs, Shrubs
Title: Erosion Control for a NC Clay Slope
Answered by: Larry Larson

QUESTION:

Hi, We have a large slope on the road edge of our property that has been gradually eroding with spring rains (NC red clay). We would really like to plant something for erosion control but the bank is too steep for us to trim/maintain it much. We are a part of a community near the forest that values a natural aesthetic but we do have HOA guidelines that lead me to believe we would prefer a ground cover over a grass. It is a sunny north facing slope, 20' tall 100' wide with a pitch steep enough to require climbing on all fours. .

ANSWER:

  Mr Smarty Plants was thinking – “My, that sounds familiar” – and I went off and found a very similar question and answer that came through last fall.  It was entitled “Slope Erosion control for Fairview NC” and had a very similar sounding situation to yours.   I also found another one from your state, which is slightly different in that the bank was shaded :  “Native plants for erosion control in North Carolina”. 

  In looking at your specific request,  Mr Smarty Plants would like to push back just a little and remind you that the fibrous root systems with perhaps runners that grasses have are key to conquering erosion on steep slopes.  What you can do is select grasses that are more amenable to the HOA aesthetic.  Of those mentioned in the previous answer, two grow relatively low,  Schizachyrium scoparium (Little bluestem) has a rather pleasing clumping nature and Carex texensis (Texas sedge) has a turflike aspect.

  Wildflowers make a nice color addition, the recommended flowers were:
Coreopsis tinctoria (Plains coreopsis)
Baptisia australis (Blue wild indigo)
Conoclinium coelestinum (Blue mistflower)
Lobelia cardinalis (Cardinal flower)
Monarda fistulosa (Wild bergamot)

  On an area that large, you may want to consider some shrubs also.  I used the North Carolina Recommended Species page to search a little further and narrowed the selection to shrubs that thrive in the sun and in clay.  May I suggest :
Robinia hispida (Bristly locust), which is specifically recommended for erosion control, Morella cerifera (Wax myrtle), Physocarpus opulifolius (Atlantic ninebark), Rhus aromatica (Fragrant sumac),  or Rhus glabra (Smooth sumac).  

 

From the Image Gallery


Little bluestem
Schizachyrium scoparium

Texas sedge
Carex texensis

Little bluestem
Schizachyrium scoparium

Plains coreopsis
Coreopsis tinctoria

Blue mistflower
Conoclinium coelestinum

Cardinal flower
Lobelia cardinalis

Bristly locust
Robinia hispida

Wax myrtle
Morella cerifera

Fragrant sumac
Rhus aromatica

More Erosion Control Questions

Plants for erosion control on steep bank in Minnesota
October 21, 2008 - I live in the Twin Cities of Minnesota. I have a steep slope in back yard which gets considerable rain runoff from the homes above me. What plants/shrubs/trees could I plant on the slope to stop the...
view the full question and answer

Erosion control for edge of artificial lake in California
August 14, 2013 - How about erosion control at the edge of an artificial lake in Southern California? Juncus and ..?
view the full question and answer

Revegetating a hillside in western Washington state
October 10, 2012 - Removing several downed trees across my dock demolished the native plants growing on the hillside and the contractor pulled out their remains. The area faces east on an open freshwater bay. Close to...
view the full question and answer

Native plants for erosion control in North Carolina
January 29, 2009 - I have an area on the north side of my house that is a hill with about a 6:1 slope. It also has a set of steps used to get from the front of the yard to the rear yard. It is very shaded. I am havin...
view the full question and answer

Native plants for erosion control in sun in Canton PA
August 03, 2010 - We just cleared a bank and need native plants and shrubs to grow for erosion control. Much sun. Thank you.
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