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
3 ratings

Saturday - March 22, 2008

From: Garland, TX
Region: Southwest
Topic: Compost and Mulch, Groundcovers, Shade Tolerant, Turf
Title: Pros and cons of Hydrocotyl bonariensis as lawn replacement
Answered by: Barbara Medford

QUESTION:

Want to convert lawn TO dollar weed! My Garland TX yard has become so shady over the years that I have a hard time with grass. A few years ago I noticed dollar weed in the grass which seemed to create an 'under carpet'. I have left it, and it seems to be taking over the shady parts of my yard - and I like it, but the plant gets only bad press. It doesn't seem to need watering or mowing, it stays lower than the lawn mower's blades, the round leaves are really pleasant...like violet leaves... its easy to walk on, it grows between the flag stone that I am increasingly laying where grass no longer grows, AND its a NATIVE plant! Can you tell me anything about the plant - how thickly will it grow? Is there any place to GET seeds to help increase the thickness of the coverage? How is it propagated? via roots or seeds? Why is it so despised?

ANSWER:

Well, guess what? Hydrocotyle bonariensis (largeleaf pennywort), which is probably the one you have, seems like a nice, natural lawn replacement where there is too much shade and moisture. In fact, as we looked through references to this plant, it seemed that many, if not most, of the sites knocking dollarweed were sponsored by herbicide manufacturers. Go to this site emilycompost and get some positive feedback. If you call it "pennywort", which is another common name, you'll find there is a lot less negative comment about it. Another native plant, Dichondra recurvata (oakwoods ponysfoot), looks very similar but is not related. Dichondra is widely used, especially in California, as a lawn plant. It's very ironic that you are probably replacing one of two invasive, non-native grasses-St. Augustine and Bermuda-with a native, attractive, low maintenance ground cover.

In terms of propagation, since Hydrocotyle bonariensis (largeleaf pennywort) is a native plant which volunteered to live in your lawn, I think you might just let Nature take its course. It is a perennial, with stems creeping and rooting at the nodes; it spreads by rhizomes. It's going to do better in the shady environment and around your flagstones than a competing grass. It does bloom, from April to September, and probably will seed out from that. If you can convince your husband that it reduces his mowing, it's evergreen, needs less water and is going to be there anyway, you probably will have no further problem. If it chooses to get into flower beds, you'll probably want to remove it, but it's certainly less invasive in that respect than the St. Augustine and Bermuda.


Dichondra recurvata

Hydrocotyle bonariensis

 

 

More Turf Questions

Clover for possible lawn area in The Woodlands, TX
October 01, 2008 - I have two areas in my large lawn that grass refuses to grow. I am thinking of seeding with clover which old lawns used to always have. Which clover will grow in this area? Where do I find seeds an...
view the full question and answer

Buffalo grass and other native grass for lawn in Central Texas
March 17, 2008 - Hi, I live in Cedar Park, TX - recently moved to into a newly built house. I wanted to put some native grass (like buffalo) in the back yard. - My back yard has slope (away from house) and front...
view the full question and answer

Brown ryegrass in Austin lawn
June 03, 2008 - We had rye grass planted in our yard last fall. It was beautiful all winter. Now it is brown but the St. Augustine has not yet taken over, so there are large portions of the lawn with an abundance o...
view the full question and answer

Native grass lawn for San Antonio
June 25, 2011 - Dear Mr Smartyplants, I live outside of San Antonio and my question is in regards to putting in a native grass lawn. What type of soil should I put down? I've sprayed herbicide and was planning on ...
view the full question and answer

Evergreen plants for shaded lawn in Austin, Texas
December 31, 2009 - I want to replace three scrawny ligustrums on the shady north front of my house with native plants. I'd like evergreen plants that don't need much maintenance. I'm not looking for a hedge, but some...
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
© 2014 Lady Bird Johnson Wildflower Center