Explore Plants

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
    
 

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
Not Yet Rated

Friday - July 18, 2008

From: Rico, CO
Region: Rocky Mountain
Topic: Invasive Plants
Title: Control of white clover (Trifolium repens)
Answered by: Nan Hampton

QUESTION:

our yard was remediated by ARCO in Rico Colorado. they brought in soil that must have been from clover fields. the soil produces tense low growing and fast growing clover with white flowers. it is invasive and is destroying our wildflowers that are natural. how does one get rid of this and allow the wildflwers that are native to flourish? in one year it has taken over large areas that used to be native. thank you. kim

ANSWER:

This sounds like Trifolium repens (white clover), a native of Europe. It is considered a weed plant in many parts of North America. However, it's still recommended as a pasture plant in association with grasses, even though it can cause gastric distress in livestock if eaten in large quantities. It has its good points, nevertheless, in that it fixes nitrogen from the atmosphere and enriches the soil for other plants when it dies.

You can read the Clover Management Guidelines from University of California Davis and learn that the best means of controlling it is by hand-pulling or hoeing it. I know this doesn't sound like a lot of fun, but there are no herbicides that will kill only the clover and not your wildflowers. Soil solarization, which is an effective way to kill grasses and other weeds, is apparently not very effective for clover since it doesn't kill seeds as well as the plants—white clover has a hard seed coat that is resistant to high temperatures. Heavy mulching in flower beds can keep the population of clover under control; but if you are dealing with a meadow-like yard, this isn't going to be a practical way to approach the problem. If you add native grasses to your wildflower mix, they can help in outcompeting the clover by growing tall and shading the clover plants. Please read our article, Meadow Gardening, for more information.

 

More Invasive Plants Questions

Smarty Plants on vitex
May 12, 2005 - I recently purchased a vitex tree and I don't know anything about it other that it blooms. Can you tell me everything there is about this tree?
view the full question and answer

Removing invasive Dichelostemma firecracker plant from Austin
April 12, 2012 - We have dichelostemma firecracker plant & cannot kill it. We need help in getting rid of this plant. Spent another 3 hours digging up corms this afternoon. It is invading our backyard & want it kil...
view the full question and answer

Removal of poison ivy by goat in Lone Jack MO
May 29, 2009 - Easy organic removal of poison ivy?? I bought a goat, but you can borrow a neighbors. Always get 2 as they get lonely. They love to eat poison ivy, pull up vine roots and all, and leave the grass.
view the full question and answer

Controlling Pickerel weed (Pontederia cordata) in British Columbia
March 10, 2009 - Hello, I am emailing from the west coast of Canada, Vancouver, and I have a plant question regarding a species you have listed on your website. We have recently discovered Pontederia cordata L. Pi...
view the full question and answer

Invasiveness of wild petunia in Austin
June 15, 2008 - Is the wild petunia in the data base as invasive/aggressive as the more common ruellia? In other words, will it pop up everywhere? Ruellia nudiflora (Engelm. & Gray) Urban Common wild petunia, Vi...
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.