En EspaŅol

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
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.
 
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

Crimsoneyed rosemallow
Hibiscus moscheutos

Smooth rose
Rosa blanda

Common snowberry
Symphoricarpos albus

Purple false foxglove
Agalinis purpurea

Plantain-leaf pussytoes
Antennaria plantaginifolia

Bride's feathers
Aruncus dioicus

Butterflyweed
Asclepias tuberosa

More Grasses or Grass-like Questions

Pathway material for Kerrville, TX
May 30, 2009 - I have removed the St Augustine, expanded a perennial bed of mostly natives and created a pathway along the new bed. Can you recommend a plant to use as a pathway? It should require low water, be hea...
view the full question and answer

Landscaper recommends non-native zoysia in Austin
April 05, 2013 - My landscaper recommends using "zoysia" grass throughout my new lawn, in full shade, partly shaded, and non-shaded areas, including in the gaps between leuder stone walks. I haven't heard about th...
view the full question and answer

Native aparejograss and Water-cress at a spring in Horeshoe Bay TX
February 24, 2012 - AT a small spring that seeps from a rocky hill on my ranch near Austin, a stringy grass called aparejograss has replaced the watercress that used to be there. Should I be worried? Does the appearance...
view the full question and answer

Native grasses for south Florida
March 02, 2009 - I live in south Florida, south of Miami about 30 miles. I would like to get rid of my St. Augustine lawn and plant native grasses. Can you please suggest some plants I could use? Will buffalo grass...
view the full question and answer

Progress of Habiturf lawn from Round Rock TX
April 12, 2012 - I sowed Habiturf seeds almost two weeks ago in well prepared soil--no grass or weeds, well tilled with compost. After sowing, I lightly raked the soil. I have watered twice/day, allowing it to dry s...
view the full question and answer

Smarty Plants's Facebook profile 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.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2015 Lady Bird Johnson Wildflower Center