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Tuesday - August 21, 2007
From: Dallas, TX
Region: Southwest
Topic: Green Roofs, Grasses or Grass-like, Herbs/Forbs, Vines
Title: Green wall panel for Dallas
Answered by: Nan Hampton
QUESTION:
We are working on a green wall panel for a hotel near SMU--I see your list of recommended species for green roofs, & wondered if you have any ideas for vertical applications. Probably will have something like a gabion or vertical structure with irrigation/nutrients fed from the top, as well as normal climbers like Parthenocissus, passion vine, etc planted at the bottom and climbing up. I was wondering about things like those ferns endemic to Enchanted Rock, or seep muhlys--would they grow in a vertical environment?All suggestions welcome!ANSWER:
This sounds like a very interesting project. Mr. Smarty Plants recently visited Avignon, France where a wall of their Halles (market) building is covered with living green plants. Beautiful!
The vines you suggested certainly should work well planted at the base of the wall growing up, but there isn't any reason that they wouldn't also look nice if they were planted near the top to fall down the wall. Mr. SP also thinks the Muhlenbergia reverchonii (seep muhly) would work; but, rather than ferns endemic to Enchanted Rock which would be difficult to obtain commercially, why not consider sedges (Carex spp.) such as Carex cherokeensis (Cherokee sedge), Carex perdentata (sand sedge), or Carex planostachys (cedar sedge). More grasses or grass-like plants that are possibilities are Eragrostis intermedia (plains lovegrass) and Nolina texana (Texas sacahuista).
You are going to have to take into consideration whether the plants are going to be in part shade or full sun. I suspect most will be in full sun. Here are some possibilities arranged by that feature:
Part shade
Aquilegia canadensis (red columbine). These are often found growing in dirt filled depressions on the tops or sides of honeycomb limestone.
Clematis pitcheri (bluebill). Vine.
Lonicera sempervirens (trumpet honeysuckle). Vine. Semi-evergreen.
Sun
Bignonia capreolata (crossvine). This will also grow in the shade, but will not have as many blossoms in the shade. Vine.
Campsis radicans (trumpet creeper). Vine.
Lonicera albiflora (western white honeysuckle). Woody vine or shrub that will also grow in part shade.
Lantana urticoides (Texas lantana). Another name for this plant is "trailing lantana."
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