Native Plants
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Monday - July 14, 2008
From: Inman, SC
Region: Southeast
Topic: Erosion Control, Grasses or Grass-like, Herbs/Forbs, Shrubs
Title: Evergreen native plants for slope in South Carolina
Answered by: Barbara Medford
QUESTION:
We would like to plant an evergreen garden in our backyard, which is on a slope. It receives the sun from approx 9-4. We have an above ground pool, and patio area. Would also like a recommendation of what to plant alongside our driveway, which gets lots of flooding when it rains.ANSWER:
Sun from 9:00 to 4:00 would come under our classification of "full sun", or 6 or more hours a day of sunlight. If you are wanting an evergreen garden, you need to be mostly talking about shrubs and trees. Few herbaceous perennials, or flowering plants, are going to be evergreen. So, we're going to go to our Recommended Species for South Carolina, and pick out some shrubs to small trees that need full sun and perhaps will also add a little color to your garden. In terms of the slope in your back yard, we are going to suggest some native grasses, whose fibrous roots will help hold soil in place. These, however, are not usually evergreen. Some native grasses hold their place all Winter, and only need trimming back of the dead material when the plant begins to green up in the Spring.
For the area along your driveway, we're not sure we have enough information to make suggested choices. Sun? Shade? Width of space? etc. Most importantly, you need to deal with the possibility of plants standing in water BEFORE you plant. Very few plants can tolerate water on their roots as the result of poor drainage, and the few swamp plants that can very quickly perish when dry weather comes. Not only that, but if the flooding and water flow come along when you have just planted your area, the plants could quite simply be washed out of the ground. And, also on the subject of what to suggest for the driveway area, most tree roots are intolerant of compacted ground and should not be planted near paved areas or foundations. Not knowing how much area you want to cover, we will refer you to the shrubs native to South Carolina we have already mentioned and perhaps some flowering plants, although, again, they will not hold their places in Winter. Since we are not skilled in site planning in terms of slopes and drainage, we found this Old House Web site Site Drainage Issues that covers some of the problems we have mentioned. Again, we urge you to deal with the location and drainage issues before you purchase plants that may not be able to survive in their location.
EVERGREEN SHRUBS
Cephalanthus occidentalis (common buttonbush) - 6 to 12', blooms June to September
Comptonia peregrina (sweet fern) - 2 to 4' tall, blooms May to August
Gordonia lasianthus (loblolly bay) - 32 to 72', blooms June to November
Kalmia latifolia (mountain laurel) - 12 to 20' WARNING: All parts poisonous.
Morella cerifera (wax myrtle) - 6 to 12', blooms March and April
Rhododendron catawbiense (Catawba rosebay) - 6 to 20', blooms April to June
GRASSES TO HOLD SLOPES
Elymus hystrix var. hystrix (eastern bottlebrush grass) - prefers shade, 1 to 3' tall
Chasmanthium latifolium (Inland sea oats) - part shade to shade, 2 to 4' tall
Muhlenbergia capillaris (hairawn muhly) - 1 to 3' tall
BLOOMING PERENNIALS
Coreopsis lanceolata (lanceleaf tickseed) - 1 to 3' tall, blooms April to June
Echinacea purpurea (eastern purple coneflower) - 2 to 5' tall, blooms April to September
Lobelia cardinalis (cardinalflower) - 1 to 6' tall, blooms May to October
More Erosion Control Questions
Erosion control on partially shaded slope
November 27, 2010 - Mr. Smarty Plants,
I live in Atlanta, GA. My house is on a hill, and I am beginning to have erosion at my backyard porch (concrete slab, on the corners especially). The soil is mainly red clay, a...
view the full question and answer
Need plants for steep slope in Knoxville, TN.
January 10, 2013 - I have several steep banks that have to be weed-eated each year every week. Do you know if there are any kinds of ground cover that would take over the weeds on these steep dangerous banks. I live in ...
view the full question and answer
Shady Perennial Groundcover Suggestions for Indiana
April 21, 2013 - Could you please recommend perennial groundcovers for Indiana that are low and leafy, self-spreading, non-invasive, deer resistant, and moisture tolerant; and that are good for erosion control on a sh...
view the full question and answer
Slope Erosion control for Fairview NC
August 19, 2012 - Please recommend plants to help with soil erosion on a slope. The soil is red clay and area gets full sun. The slope is approximately 12' x 12'. I live in Fairview, NC
view the full question and answer
Non-allergenic landscape in Fairfield, CT
April 18, 2009 - I live in Fairfield, CT and need to have a non-allergenic landscape. Can you please list plants, ground covers, and trees/shrubs that would be beautiful, and help in this critical situation? The lan...
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |