Ask a Question
Notify Me On Question Update
Email this Question
When do I spray my lawn for weeds?
Rate This FAQ
Broadleaf weeds usually appear in lawns early in May. Pre-emergent herbicides may be applied before then to help prevent weed establishment. Once weeds have emerged, use a post-emergent type of herbicide.
In lawns, kill broadleaf (non-grassy) weeds with broadleaf weed killers. NOTE: Herbicides containing 2,4-D or should not be applied when the temperature is above 85 degrees F. or when weather is windy. In areas where complete vegetative control is needed, glyphosate (Roundup) will kill almost all living plants. Overspray of glyphosate can severely damage non-target plants. Follow label instructions when using any chemical sprays.
Submit Your Suggestion
Other Questions In This Topic
- How can I attract hummingbirds to my yard?
- There are brown spots in my lawn every summer, some are round and others are ribbon shaped. What can I do to prevent this problem?
- Do you have tips for success with African violets?
- What's killing Spruce and Pine trees in Utah?
- Spotted spurge is taking over my lawn. What can I do now, in these hot August temperatures, to knock back this weed problem?
- I sodded my back yard 3 years ago with RTF. It has not held up well, especially in the higher traffic areas where it is completely dead. Any suggestions?
- I am an architect, working with a client who wants to hydroseed a 2.5 acre parcel for use as a softball field. The area is currently planted in alfalfa. There will be some regrading (both cut and fill) of the field that will be required. The client would still like to hydroseed this year, likely near the end of September. Do we need to call for the alfalfa to be treated with a herbicide? If so, what is the process, and what herbicide should be used? Is there a waiting period between application of the herbicide and the hydroseeding? Must the herbicide be applied to the above-grade plants, or can the site first be cleared, then the herbicide applied to the gound and roots?
- My blue spruce shrubs are turning brown and look like they are dying. What is wrong?