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From: Jacksonville, TX
Region: Southwest
Topic: Rain Gardens, Erosion Control, Groundcovers
Title: Plants for difficult site in Jacksonville, TX
Answered by: Nan Hampton
You have given Mr. Smarty Plants a difficult challenge and it is going to be a challenge for you, too, to get the plants established here without some application of water initially. First of all, even though you think the grasses and sedges look a little mangy on your slope, don't get rid of them. They are what's keeping it from washing away. Let's first address the clay hillside and "flat spot". You are well out of the native range for Juniperus horizontalis (creeping juniper). The only juniper that is native to Cherokee County or adjacent counties is Juniperus virginiana (eastern redcedar) and it certainly wouldn't be considered a groundcover. It can grow to a maximum height of 90 feet. Also, we wouldn't recommend liriope (from East Asia) or monkey grass (native to Japan) since neither are native to North America and we, here at the Wildflower Center, are dedicated to promoting the conservation and use of native North American plants. We do, however, have some native plants to use as groundcovers that we will recommend:
Artemisia ludoviciana (white sagebrush) is evergreen (or, maybe better described as 'ever-gray'). It grows from 1 to 3 feet high in clay and full sun and can be mowed.
Oenothera speciosa (pinkladies) is almost evergreen and grows from 1 to 2 feet high in clay and full sun.
Salvia lyrata (lyreleaf sage) is evergreen if it gets water in the summer. It grows 4 inches to 2 feet in clay and full fun.
Callicarpa americana (American beautyberry) is a shrub that isn't evergreen but does have bright purple berries for interest in the fall and winter.
Grasses are excellent for controlling erosion because of their extensive fibrous root system. Here are some attractive native ones to add to the mix:
Muhlenbergia capillaris (hairawn muhly) grows 1 to 3 feet in clay and full sun with a pinkish-purple hazy bloom in October. It will be dormant in winter. This grass can stand seasonal poor drainage so it would also be suitable for the 'rain garden' area.
Schizachyrium scoparium (little bluestem) grows 1 to 3 or 4 feet in full sun in well-drained soil of almost any type and is bluish-green in the summer and turns reddish-brown in the fall and winter.
Sorghastrum nutans (Indiangrass) grows 3 to 8 feet in clay and full sun. It has golden blooms in October. It also should work in the 'rain garden'.
Here are some other plants for the 'rain garden' that are able to grow in very wet areas, but will also do well when the water goes away:
Andropogon glomeratus (bushy bluestem)
Lobelia cardinalis (cardinalflower)
Physostegia intermedia (slender false dragonhead)
You can find more suggestions in a previous question we answered about plants for a rain garden in East Texas.
You can also check out our Piney Woods list for more possibilities for plants for your area.
Here are photos from our Image Gallery:
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May 01, 2011 - I've been tasked with identifying native grass varieties or mixes (Coastal Georgia) that can be used for erosion control on sandy slopes created from dredged river sediment and that receive lots of s...
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