Ask a Question
Notify Me On Question Update
Email this Question
when should i apply a preemregent to control the weed oxalis that is in my lawn? can you reccomend a particular product?
Rate This FAQ
Preemergent herbicides will work only as the weed seed is germinating and emerging out of the soil. If you see oxalis already growing in your lawn, use a postemergent herbicide.
Oxalis is usually growing at the lawn edge or where soil is bare. Keep your lawn healthy and vigorous and it will out-compete oxalis.
Oxalis also seems to grow where lawns have become increasingly shaded by trees that are growing larger in the yard. Once the oxalis is eliminated, overseed that lawn area with a shade tolerant grass seed so that the oxalis won't re-infest that area.
The USU Extension publication "Landscape and Garden Weed Control" (http://extension.usu.edu/files/publications/HG508.pdf) recommends preemergent herbicides containing isoxaben or pendimethalin for good preemergent control of oxalis.
Postemergent herbicides containing the active ingredients 2,4-D, MCPP and dicamba will control oxalis after it is already growing. Herbicides containing triclopyr and clopyralid also provide good postemergent control.
Recommendations for shade-tolerant turfgrass cultivars is available in the USU Extension publication "Turfgrass Cultivars for Utah" (http://extension.usu.edu/files/publications/publication/HG_Grass_2004_01.pdf
Submit Your Suggestion
Other Questions In This Topic
- Do you have tips for newly planted trees?
- Why do maple tree and burning bush leaf edges turn brown in mid-summer?
- I need to know what is best for killing vines? I have a fence full and I would like to get rid of them.
- We have a large pine tree in our yard that looks like it is dying. Can someone from extension come and look at it and tell me if it is dying or if this summer's heat has just caused it to withdraw in. It gets south and west sunlight all day long. Thanks
- I live in Riverton, and have areas in my lawn that are brown and sparse. I planted the lawn from seed, a Kentucky bluegrass blend I bought from a nursery, at least 10 years ago. It grows well in cooler weather, but by summer it looks dead in patches and is stiff, not soft lawn for the kids to play on. I would like to put down some patch seed, but don't know what kind to use and how is the best way to plant. Do I have to take out the old lawn or can I just sprinkle it on and cover with a little bit of soil. Also, is there any way to control the wide leaf weed that grows throughout my lawn as well as the entire neighborhood?
- My blue spruce shrubs are turning brown and look like they are dying. What is wrong?
- I have a very large, beautiful Cottonwood tree on my property, that is near the property line with my neighbor. She wants to put in a new fence, because the tree has been pushing up the posts for her old fence. The fencing company has said that they can put in a new fence, but they will have to "shave off" a bit of the tree trunk and possibly some of the root near the surface of the ground. I am worried that something like that could lead to the tree getting sick or dying. I want to keep peace among neighbors, but it would be a disaster and very expensive to lose the tree because of something likethis. Can you please tell me if a Cottonwood tree is hardy enough to withstand such a "shaving" procedure?
- What is causing the holes in my peach and cherry trees?