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Do I Weed & Feed or Plant Seed First?

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You can sow grass seeds now and kill weeds later with a post-emergent herbicide or kill weeds now with a pre-emergent herbicide and plant the seeds later. Weed-and-feed fertilizers are specially formulated combinations of turf fertilizer and herbicides that you apply either before you plant grass seeds or on established lawns.

Pre-Emergent Herbicides

You apply pre-emergent herbicides before weed seeds germinate, typically in the spring. Pre-emergent herbicides do not prevent weed seeds from germinating; they suppress the development of weed roots as they germinate. They’re usually effective for two weeks to three months, depending on the formulation, and you have to water the lawn after applying for the herbicide for it to be effective. There are pre-emergent herbicides to kill both broadleaf weeds and weedy grasses. You can apply them before you sow your grass seed. If you apply a pre-emergent herbicide that kills weedy grasses, you have to delay sowing your lawn seed.

Post-Emergent Herbicides

Post emergent herbicides kill weeds after they appear. Some post-emergent, systemic herbicides that you can apply directly on lawns only kill weedy grasses, while others only kill weeds with broadleaf weeds. Contact herbicide such as those including the active ingredient glyphosate kills on contact. To use one of those on a lawn without killing the grass you have to daub it on individual weeds.

Pre-Emergent Weed-and-Feed Fertilizer

Fertilizers containing pre-emergent herbicides selectively prevent certain kinds of weeds from finishing their germination cycle. There is no point applying this type of weed-and-feed mix after weeds are growing on your lawn. You have to apply it early in the growing season before weeds appear. Make sure the pre-emergent herbicide in the fertilizer kills the kind of weeds that have plagued your lawn in the past. You might apply a starter fertilizer containing a pre-emergent herbicide before you sow your lawn seeds.

Post-Emergent Weed-and-Feed Fertilizer

Post-emergent weed-and-feed formulations kill selective weeds that are already growing in your lawn. Make sure that the herbicide in the formulation you buy kills the type of weeds that are growing in your lawn. Most weeds make their appearance in the spring, the best time to apply weed-and-feed fertilizer.

Do I Weed & Feed or Plant Seed First?. You can sow grass seeds now and kill weeds later with a post-emergent herbicide or kill weeds now with a pre-emergent herbicide and plant the seeds later. Weed-and-feed fertilizers are specially formulated combinations of turf fertilizer and herbicides that you apply either …

Weed and Seed

Weed and Seed is a Department of Justice community-based initiative to prevent, control and reduce violent crime, drug abuse, and gang activity in targeted high-crime neighborhoods throughout the country. Weed and Seed strategy follows a two-pronged approach: local law enforcement agencies and prosecutors cooperate in “weeding” out criminals who engage in violent crimes and drug abuse, and “seeding” brings to the area human services encompassing prevention, intervention, treatment, and neighborhood revitalization. A community-oriented policing component bridges weeding and seeding strategies by infusing police officers into the Weed and Seed site, which enhances their ability to gain cooperation and obtain information from area residents while they assist residents in obtaining information about community revitalization and resources.

Weed and Seed Weed and Seed is a Department of Justice community-based initiative to prevent, control and reduce violent crime, drug abuse, and gang activity in targeted high-crime neighborhoods