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From: Houston, TX
Region: Southwest
Topic: Erosion Control, Grasses or Grass-like
Title: Need native plant to stabilize 45 degree slope in Houston, TX.
Answered by: Jimmy Mills
Two questions that Mr. Smarty Plants would have are; what is growing there now? ; and what kind of soil are we talking about?
Generally, we recommend grasses and grass-like plants for slope stabilization. To look at some possibilities, lets go to the Native Plant Database and use the Combination Search option. Select Texas under State, grass/grass-like under General Appearance, and perennial under Lifespan. Check sun under Light Requirement, and dry under Soil Moisture. Click the Submit Combination Search button and you get 57 species that meet these criteria. Clicking on the scientific name of each species will bring up its NPIN page that contains the characteristics of the plant, its growth requirements and, in most cases, photos. As you go through the list, look for plants that match your growing conditions.
Here are some possibilities
Bouteloua curtipendula (Sideoats grama)
Panicum virgatum (Switchgrass)
Schizachyrium scoparium (Little bluestem)
Sorghastrum nutans (Indiangrass)
Carex texensis (Texas sedge) a sedge
A 45 degree slope seems pretty formidable. You might consider consulting a landscape architect to see if some sort of terracing should be incorporated into the project.
Native American Seed Coompany in Junction has seed mixes for various apllications, and their "Dam Slope mix" might be of interest to you. They also have a lot of information about planting seeds.
Another source of help and information is the Harris County office of Texas Agrilife Extension.
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