Explore Plants

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
    
 

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 - March 26, 2012

From: Charlottesville, VA
Region: Mid-Atlantic
Topic: Rain Gardens, Erosion Control
Title: Riverbank retention in VA
Answered by: Anne Bossart

QUESTION:

I need some groundcover/bank retention for a Virginia riverbank in mixed sun and shade. I want to plant something native to VA. the area is out of the water but subject to occasional (4-5 times per year) flooding. Rocky,sandy soil. When it floods it sometimes leaves sand, but more often removes it, which is why I want to plant something to retain the soil and help prevent erosion. Thank you very much.

ANSWER:

The best plants to stabilize a bank and prevent erosion are plants like grasses that have fibrous root systems and shrubs and perennials that spread with runners to form thickets.

You can find suitable plants by doing a Combination Search on our Native Plant database.  Select Virginia, the plant habit and your conditions (part shade).  It sounds like the soil is quite dry except when it floods, so select dry conditions.  The list that is generated has links to detailed information pages for each plant.  You can then check which plants are adaptable enough to tolerate the wet conditions of flooding as well.

As your conditions are very much like those in a rain garden, you will find a very informative article the Brooklyn Botanic Garden has published about rain gardens as well as a plant list , helpful. You can cross reference between the lists you generate and those on their list.

Here are a few plants to consider:

Rhus aromatica (Fragrant sumac)

Amorpha fruticosa (Indigo bush)

Grasses with deep fibrous roots:

Andropogon gerardii (Big bluestem)

Andropogon glomeratus (Bushy bluestem)

Bouteloua curtipendula (Sideoats grama)

Schizachyrium scoparium (Little bluestem)

Sorghastrum nutans (Indiangrass)

 

 

 

From the Image Gallery


Fragrant sumac
Rhus aromatica

Bushy bluestem
Andropogon glomeratus

More Rain Gardens Questions

Plants for a wet area in Ohio
March 30, 2010 - I have a lot of water in my front yard are there any kind of plants that I can plant to drink up some of the water? I live in North East Ohio
view the full question and answer

What plants can absorb the excess water in my back yard?
February 20, 2009 - I am looking for any plants and trees that can absorb the excess water in my back yard. There is a large area that is swampy and always wet. Could you please provide me some suggestions?
view the full question and answer

Retention pond from Hendersonville NC
April 24, 2012 - We have a retention pond that has recently been cleaned and we would like to plant perennial native plant and grass seeds that will enhance the appearance and contribute to the natural process of filt...
view the full question and answer

Rain garden for Washington MO
March 08, 2013 - I have a 40' tall bald cypress at the bottom right corner of my sloped yard (slopes from 2 sides, has 3 gutter runoffs directed towards it from 50-70' away). Can I put a series of retaining walls up...
view the full question and answer

Rain garden plants for Ketonah, NY
March 30, 2010 - Rain garden plant selections for lower NY state
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.