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
1 rating

Friday - March 14, 2014

From: Brownsville, TX
Region: Southwest
Topic: Rain Gardens, Drought Tolerant, Erosion Control
Title: Raingarden Plants for Brownsville, TX
Answered by: Larry Larson

QUESTION:

I'm a Landscape Architect in South Texas and I'm implementing raingardens and vegetated swales in my projects. What native plants could be used in these gardens/water runways. They would need to resist both, wet soils when flooded and dry soils. I would appreciate any recommendations on trees, shrubs, wildflowers, grasses. Thank you very much.

ANSWER:

Greetings;  Mr Smarty Plants sees this as a interesting challenge.  A raingarden in deep south Texas!

My normal research approach to this kind of challenge includes checking out what Mr Smarty Plants has considered before.  Here are some question/answer pairs which are close to your request either in context or in area:
Reseeding of the Laguna  Atascosa 
Native grasses for erosion control in Harlingen, TX 
Landscaping on South Padre Island 
Replacing non-native St. Augustine with native grasses in Rockport TX
Plants for erosion control in arid region 

And here are a few, from a bit farther afield, on establishing a raingarden:

Rain garden plants for Central Texas  
Managing a wet area in Austin 
Grasses for dry bottom detention ponds   [Pearland Area]  

  None of these struck me as right on, so I also reviewed likely South Texas natives for suitability for erosion control and for both the wet and dry situations you describe.  The Wildflower Center keeps lists of appropriate recommended species; this link is to that list for the South Texas Plains. I reviewed this list for natives that are well acclimated to both dry soils and ones that are wet or at least moist. There aren’t all that many so I list them here:

Grasses:  Bouteloua curtipendula (Sideoats grama)Melica nitens (Three-flower melic), Panicum virgatum (Switchgrass), Sorghastrum nutans (Indiangrass)

Shrubs  Ceanothus americanus (New jersey tea), Cordia boissieri (Mexican olive), Prunus rivularis (Creek plum), Rhus aromatica (Fragrant sumac)  

Herbs [Wildflowers]: Callirhoe involucrata (Winecup)Chamaecrista fasciculata (Partridge pea)Cooperia drummondii (Evening rain lily), Geum canadense (White avens)Helianthus maximiliani (Maximilian sunflower)Justicia pilosella (Gregg's tubetongue)Oenothera speciosa (Pink evening primrose)Ratibida columnifera (Mexican hat)Rudbeckia hirta (Black-eyed susan), Ruellia nudiflora (Violet ruellia)Rubus trivialis (Dewberry)Salvia coccinea (Scarlet sage)Solidago canadensis (Canada goldenrod)Verbesina virginica (Frostweed)Wedelia texana (Zexmenia)

Trees :  Ptelea trifoliata (Wafer ash)  (good for wet soils also],  Cordia boissieri (Mexican olive)Cornus drummondii (Roughleaf dogwood)Morus rubra (Red mulberry)Parkinsonia aculeata (Retama)

  For erosion control, we recommend grasses and shrubs with extended root systems that can hold the soil against the water action.  I did not sort the above list for this, but a bit of study of the plants will reveal these characteristics. For instance, If you review the grasses, note that three of them will form clumps, which is good for erosion.  The melica nitens is less likely to be usefull for this application.

 

From the Image Gallery


Sideoats grama
Bouteloua curtipendula

Mexican olive
Cordia boissieri

Switchgrass
Panicum virgatum

Winecup
Callirhoe involucrata

Mexican hat
Ratibida columnifera

Scarlet sage
Salvia coccinea

Roughleaf dogwood
Cornus drummondii

Wafer ash
Ptelea trifoliata

Retama
Parkinsonia aculeata

More Erosion Control Questions

Erosion control in West Union IA
June 22, 2010 - Erosion control and native grasses/plants for steep, shady slope in northeast Iowa. We are building a house in northeast Iowa (near West Union in Fayette County). The road that was graded to the ho...
view the full question and answer

Erosion Control for a Shaded Slope in Aliquippa PA
May 07, 2014 - What plants. shrubs or trees can I plant to retard soil erosion on a steep shaded hillside in PA
view the full question and answer

Dealing with rain runoff on a slope in Austin
March 24, 2012 - Our lawn is a year old and slopes at about a 45 degree angle with a lot of small holes and tiny gullies from water run-off. I have tried packing them with soil, but it washes away in the rain. Would ...
view the full question and answer

Plants for curb appeal from Birmingham AL
June 16, 2011 - My front yard is on a down hill slope. Can you recommend some plants that would be good for creating curb appeal that will be planted up against the house? We need some that are short around 2 feet ...
view the full question and answer

Plants to control hillside erosion in Vermont
May 23, 2008 - Hi, I am trying to do an eagle project that involves putting vegetation onto a hill to prevent erosion. I live in Vermont. What kinds of plants would hold together a hillside and could be planted in ...
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