En Español

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.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
1 rating

Thursday - April 25, 2013

From: Pittsburgh , PA
Region: Mid-Atlantic
Topic: Soils, Erosion Control, Grasses or Grass-like, Herbs/Forbs, Shrubs
Title: Plants for steep slope in Pittsburgh PA
Answered by: Barbara Medford

QUESTION:

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 lot of sun. There is also a lot of rock under the soil. I appreciate your answer.

ANSWER:

We believe this is the previous Mr. Smarty Plants question to which you are referring; we just answered that one a few hours ago so there may be others that you saw, but we understand you are interested in erosion control on a steep hill. The one we linked you to from South Carolina had the problem of a clay soil, which is very difficult to work with, especially for plants that need good drainage for their roots. Since we don't know what your soils are in Allegheny County in the southwestern part of Pennsylvania we will try again to find native plants that are native to your area, counting on the fact that they are native to indicate they will grow in whatever soil, climate and rainfall you have.

We will go to our Native Plant Database, scrolling down to our Combination Search. Then we will select on Pennsylvania for State, run 3 different searches, one on grasses and grasslike plants, one on shrubs and one on herbs (herbaceous blooming plants). For each search we will indicate "sun" under light requirement.  The grasses, of course, are our preference because their long fibrous roots will help to hold the soil, but there are also shrubs and flowering plants that will help the looks of the hillside. These grasses will all be taller native grasses, not lawn grasses, as you would obviously prefer not to mow a hillside. You can follow each plant link to our webpage on that plant to learn growing conditions, moisture needed and best propagation practices. You may, of course, rerun these searches making different specifications and your own choices.

Grasses for Allegheny County, PA:

Andropogon gerardii (Big bluestem)

Carex texensis (Texas sedge)

Schizachyrium scoparium (Little bluestem)

Sorghastrum nutans (Indiangrass)

Shrubs for Allegheny Co., PA:

Amelanchier stolonifera (Running serviceberry)

Hibiscus moscheutos (Crimsoneyed rosemallow)

Rosa blanda (Smooth rose)

Symphoricarpos albus (Common snowberry)

Herbaceous Blooming Plants for Allegheny Co., PA:

Agalinis purpurea (Purple false foxglove)

Antennaria plantaginifolia (Plantain-leaf pussytoes)

Aruncus dioicus (Bride's feathers)

Asclepias tuberosa (Butterflyweed)

 

From the Image Gallery


Big bluestem
Andropogon gerardii

Texas sedge
Carex texensis

Little bluestem
Schizachyrium scoparium

Indiangrass
Sorghastrum nutans

Running serviceberry
Amelanchier stolonifera

Crimson-eyed rose-mallow
Hibiscus moscheutos

Smooth rose
Rosa blanda

Common snowberry
Symphoricarpos albus

Purple false foxglove
Agalinis purpurea

Woman's tobacco
Antennaria plantaginifolia

Bride's feathers
Aruncus dioicus

Butterflyweed
Asclepias tuberosa

More Erosion Control Questions

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

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

Groundcover to prevent erosion in Florida
November 04, 2012 - I live on a hill and put in a new side driveway and now I am seeing erosion along the driveway and can see the bottom of my concrete. Grass won't grow because its all shaded. What would be the best g...
view the full question and answer

Erosion Control for Shady Ditches
January 24, 2013 - What plants can you recommend for erosion control along shady ditches in Northwest Indiana?
view the full question and answer

Full Sun, Wind-Tolerant Shrubs and Vines for Steep MN Hillside
June 26, 2013 - My neighbor and I share a very steep, large (in total almost 200 ft. wide) west-facing hillside in Excelsior, MN on Lake Minnetonka. We both have a flat grass area at the bottom so the hillside does n...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center