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?


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

Wednesday - May 13, 2009

From: Austin, TX
Region: Southwest
Topic: Turf
Title: Eliminating stinging nettles in lawn in Austin
Answered by: Barbara Medford


How do I get rid of stinging nettle that is dispersed through my lawn. It's not like the nettle pictures I see online - they are short plants and have narrow leaves - but covered with spines. Mowing does not reach them.


You are correct, the pictures you find online of Urtica dioica (stinging nettle) and Urtica dioica ssp. gracilis (California nettle) show a tall slender plant with nasty little spines. The difference is, you are mowing those nettles in your lawn, when you mow the lawn. They would rather grow up tall, but you won't let them, so they are doing the best they can to survive. So, what to do? Do you or your children or your pets run around on the lawn barefoot (or -paw)? Is it killing your grass? Do you belong to the school of "just mow it, it's green"? It may be something to tolerate or ignore. A very healthy lawn allowed to grow a little taller than usual will usually shade out and out-compete a weed. It is a perennial, so it will regrow from the roots even if you have kept it mowed low enough to prevent blooming and formation of seeds. 

The Lady Bird Johnson Wildflower Center neither recommends for nor against herbicides, but if you're determined to try to get rid of the nettles, you may have to use some. You need to be very careful what you buy and follow the application instructions closely. The grass in your lawn is a monocot. Most weeds, including the nettles, are dicots, or broadleaf weeds. The "weed and feed" fertilizers that are highly advertised in the spring are designed to kill only dicots.  The problem with broadcasting or spraying something like that is that the ornamental shrubs, flowers and trees in your garden are also dicots. A puff of wind (which we have in BIG puffs all the time in Austin), an indiscriminate aiming of the applicator or just an accidental spill could have disastrous effects on some of your prize plants. Not only that, but watering or rain is carrying excess herbicides and pesticides down to our water supply, where they end up in your glass of water. We would really rather you give the grass a chance to overcome the enemy on its own before you start chemical warfare.

Urtica dioica

Urtica dioica ssp. gracilis



More Turf Questions

Substitute for Habiturf in Fullerton, CA
March 27, 2015 - Will habiturf grow/thrive in 92835 zip code? I think Im on 10a or 10b hardiness. I have clay soil. Thanks
view the full question and answer

Lawn care?
May 10, 2009 - I had red yucca planted in my garden last May. They were trimmed back by my lawn care people last winter and currently seem to be slowly growing back. However, the red flower stalk is not growing ba...
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

When do Habiturf® grasses make seeds?
June 16, 2015 - I planted Habiturf seeds last year near Dripping Springs. It looks like the Buffalo grass has had seeds on it for a week or 2. How long does it need to remain on the live Buffalo Grass before it can b...
view the full question and answer

Supplier for native lawn grass for South Texas
October 20, 2009 - Where would I buy native lawn grass for South Texas? Would it be sod or seed?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
© 2015 Lady Bird Johnson Wildflower Center