Contact Us Host an Event Volunteer Join

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
Not Yet Rated

Tuesday - April 24, 2012

From: Hendersonville, NC
Region: Southeast
Topic: Rain Gardens, Grasses or Grass-like, Herbs/Forbs, Shrubs
Title: Retention pond from Hendersonville NC
Answered by: Barbara Medford

QUESTION:

We have a retention pond that has recently been cleaned and we would like to plant perennial native plant and grass seeds that will enhance the appearance and contribute to the natural process of filtration, hold the soil when water is rushing by and permit pollutants in the water to be filtered out. What time of the year should the seed be planted and able to stand generally wet feet?

ANSWER:

From the EPA, here is an article on National Pollutant Discharge Elimination System, which is about retention ponds.

With that in mind, we have two very similar questions in our queue; one is yours from North Carolina and another is from Michigan. We suggest you read the Michigan answers for some background information:

Grand Haven MI

White Lake MI

Mason MI

We found a previous Mr. Smarty Plants question originating from Virginia which we think might have some information of use to you. There are some more links to further information in that, and instructions on using our Native Plant Database. Since we don't know if you want all grasses, how moist your soils are, how much sunlight they will get, etc, we think it would be better if you made your own plant list. Native grasses are certainly the best choice as their long fibrous roots will definitely help to hold the soil. As for the time the seeds should be planted (or plants if you are putting in some shrubs) is dependant on the part of the country. In Texas, we recommend planting grass seeds in mid-April, and hoping for gentle consistent rains, which we seldom get. If you go down the webpage on each plant you are investigating to the bottom you will see a list of Additional Resources. Click on "Search Google for ______ (plant name). Sometimes the webpage will have specific Propagation Instructions on it.

 

 

 

 

More Shrubs Questions

Recovering neglected garden space from Grapevine TX
March 22, 2014 - I live in Grapevine TX (Dallas). I just moved into a house where almost the entire large backyard is covered by oak trees that shed tons of leaves throughout our mild falls/winters. The yard has not...
view the full question and answer

Native plants for restoring a North Carolina pond site
April 12, 2011 - I reconstructed the dam to a 50 year old cattle pond at our high-end residential development in Charlotte, NC. There are many large mature trees around the pond but also some good sun exposure at two ...
view the full question and answer

Small shrub to plant in Austin Texas
March 11, 2009 - Hi.. I live in Southwest Austin and I am looking for a shrub that I can plant against the back of my house, which faces the north. I want something native, fairly low maintenance and not too large,...
view the full question and answer

Webworm on Texas Mountain Laurel in Texas
September 02, 2015 - I thought my mountain laurel had web worms and I sprayed for them. Now the plant looks like it still has the worms even though none are present. Also, I sprayed with a fungicide because some of the ...
view the full question and answer

Small native evergreen shrubs for North Carolina
May 17, 2007 - I live in zone 7 and need miniature shrub to go in flower bed situated in full sun. I love gardenias but afraid the intensity of the sun might be too much.
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.