Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
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.
From: Landisburg, PA
Region: Mid-Atlantic
Topic: Meadow Gardens, Drought Tolerant, Erosion Control, Grasses or Grass-like, Wildflowers
Title: Ground cover for a bank in PA
Answered by: Anne Bossart
This sounds like a massive project and it will be a fair amount of work to plant an area that size, but there is no reason you shouldn't end up with a planting that is attractive, holds the soil and provides habitat benefits to birds, butterflies and other pollinators. There are a number of herbaceous plants and grasses that are native to your area that will survive and even thrive in your conditions. You can create a list of plants to choose from by visiting our Native Plant Database and performing a Combination Search for Pennsylvania. Select grasses (and then herbs) and sunny, dry conditions. The list of plants generated will have links to detailed information pages with images for each plant where you can learn more about blooms, wildlife benefits and so on.
Ornamental grasses are a great place to start as they are some of the toughest plants out there. Their fibrous root systems make them drought tolerant and prevent erosion (a problem for a bare, rocky slope when it does rain). Some of the 25 plants the database lists that you could try are:
Panicum virgatum (Switchgrass)
Schizachyrium scoparium (Little bluestem)
Sorghastrum nutans (Indiangrass)
Sporobolus heterolepis (Prairie dropseed)
If you plant these grasses in large groupiongs, or drifts, the wind will blow them in waves and the sun will light them up to creat a great effect beside the water of your pool. Interspersed with "wildflowers", you will create a meadow garden alive with butterflies and other winged creatures. Leave the dried plants standing all winter to provide a natural food source for the birds.
These "wildflowers" from the list of 124 the combination search generates are just a few that could work for you.
Anaphalis margaritacea (Pearly-everlasting)
Asclepias tuberosa (Butterflyweed)
Coreopsis lanceolata (Lanceleaf coreopsis)
Echinacea purpurea (Eastern purple coneflower)
Liatris pycnostachya (Prairie blazing star)
Solution for erosion on steep slope in California
April 14, 2011 - Dear Mr.Smarty Plants,
I have a serious hillside problem in Santa Cruz County resulting from the recent deluge of rain. Steep to sheer now with no plants left on it after the hill slide washed to th...
view the full question and answer
Erosion control for a North Carolina creek side
February 29, 2012 - Hello Mr. Smarty Plants! I noticed a question on your website recommending NC native grasses and plants to help prevent erosion on a sloping backyard, including the use of an erosion blanket. The pl...
view the full question and answer
Stabilizing a steep slope in KY
March 31, 2011 - We are building a new home and have a very steep hill behind the home. Our highlift operator just cleared it off - I would say about 15 to 20 feet in height and at least 150 feet in length. What wou...
view the full question and answer
Possibilities of plants for bank shale ledge in Johnstown, PA
April 20, 2008 - We have a mountain that we ripped out to build our house. The remaining ledge is mostly bank shale and everyone is telling us that nothing will grow on the hillside due to it being bank shale and a p...
view the full question and answer
Plants for steep slope in Pittsburgh PA
April 25, 2013 - I have a similar question to one from SC. I live in Pittsburgh, PA. We have a steep slope behind a newly built in pool. What type of plants can I put on the hillside to hold the soil. It gets a ...
view the full question and answer
![]() |
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. |