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
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

Non-native invasive carrot wood tree losing leaves in Alpine CA
April 22, 2014 - My carrot wood tree is losing all of its leaves. The tree is about 15foot high & 13 years old. Could it be gophers? The tree was trimmed 1 year ago.
view the full question and answer

Aggressive vine with purple flowers in South Carolina
September 12, 2014 - Found an aggressive climbing vine with purple flowers in out vegetable garden. This garden was cleaned and new dirt, mulch and manure was put in in the spring. It was raked out after the infusion of d...
view the full question and answer

Eliminating English Ivy in East Flat Rock NC
April 13, 2010 - In the woods behind our house our neighbor has an invasion of English Ivy. It creeps over and through the fence into our yard, and we want to fight back! I have read the other articles about cutting...
view the full question and answer

Planting petunias around base of oak tree from Houma LA
March 30, 2013 - I live in south Louisiana and I want to plant petunias. Can I plant petunias around the base of an oak tree?
view the full question and answer

Eliminating kudzu from Richmond KY
March 26, 2014 - I live in Richmond KY, Kirksville area. I have noticed that Kudzu has started to grow in my patch of land next to the creek. How can I get rid of this before it becomes a big problem?
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