Should I Weed And Feed Or Plant Grass Seed First

This is a big question in early spring: “My lawn needs everything what should I do first, put down seed or kill my weeds? The reason why this question is tricky is because many of the weed controls will harm new grass seedlings. Here are your best two options: Do you have less than 75%… 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 … Whether you put down fertilizer or grass seed first depends on several factors and conditions. The most important factors are based on the type of grass planted, soil conditions, climate and whether the lawn is new or being re-seeded.

What’s First: Feed, Weed or Seed?

This is a big question in early spring: “My lawn needs everything what should I do first, put down seed or kill my weeds? The reason why this question is tricky is because many of the weed controls will harm new grass seedlings.

Weed, Feed or Seed?

Here are your best two options:

Do you have less than 75% good grass with bare spots larger than a few inches in diameter?

Answer: If lots of larger spots, then seed this spring. Be sure to use a special Starter Lawn Food plus Weed Preventer that is compatible with grass seed (the regular crabgrass preventers will keep grass seed from growing). If you do not prevent weeds when you seed, you are likely to be very disappointed as crabgrass and other weeds will germinate and choke out your good grass before it has a chance to take hold. A machine called a slit-seeder will help make sure the grass seed comes in contact with the soil. You just select the Turf Builder Grass Seed blend that is right for your conditions, such as sun, shade, heat-tolerant, etc. If you only have a few bare spots to take care of, consider Scotts EZ Seed. I think this is the best bare spot repair product we have ever sold! Spread the Starter Lawn Food plus Weed Preventer after you put down the seed. Feed your lawn again in one month after seeding with Turf Builder Lawn Food. Once your new grass has been mowed 4 times, you can kill weeds with Ortho Weed B Gon MAX plus Crabgrass Killer OR Roundup For Lawns.

See also  Strawberry Shortcake Weed Seeds

Do you have more than 75% good grass however your lawn is thin and weedy without widespread bare spots?

Answer: If you have more than 75% grass, you may be surprised how your good grass will fill in with four feedings a year at 6 to 8 week intervals. With this option you skip spring seeding (you can always seed in fall if your lawn still needs it). Here is a schedule for the year: Feed your lawn now with Scotts Turf Builder with Halts Crabgrass Preventer. In 6 to 8 weeks after your first feeding, feed again with Scotts Turf Builder Weed and Feed if you have lots of weeds or if you only have a few weeds, your second feeding can be Turf Builder Lawn Food and spot treat your weeds with Ortho Weed B Gon MAX plus Crabgrass Killer OR Roundup For Lawns. Put down Scotts GrubEx sometime in May or June. In 6 to 8 weeks after your second feeding, feed again with Scotts Turf Builder with SummerGuard to control insects. In 6 to 8 weeks after your third feeding, in late summer/early fall, feed with Turf Builder Lawn Food.

If you have questions during the year, the Scotts Help Center folks will be happy to help you.

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 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.

See also  How Long To Dry Weed Seeds

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.

What Should I Put Down First: Fertizer or Grass Seed?

Whether you put down fertilizer or grass seed first depends on several factors and conditions. The most important factors are based on the type of grass planted, soil conditions, climate and whether the lawn is new or being re-seeded.

New Lawn Seeding

Most landscaping professionals agree that it is always best to fertilize the soil first if you are seeding a new lawn. It is also recommended to conduct a soil test so that you select the appropriate fertilizer. The results will dictate the appropriate levels of phosphorus, potassium and nitrogen to get the lawn off to a healthy start once the seeds are planted.

See also  Can You Drown A Weed Seed

Established, Cool-Season Grasses

Cool-season grasses include fescues, bluegrass and rye grass. Plant seeds to patch or re-seed an existing lawn. Aerate the area where you are re-seeding the lawn. Apply a heavier dose of nitrogen in the early fall to help build fortify roots during the winter. Then apply a mid-spring fertilization with less nitrogen to help promote thicker growth during spring and summer.

  • Whether you put down fertilizer or grass seed first depends on several factors and conditions.
  • Most landscaping professionals agree that it is always best to fertilize the soil first if you are seeding a new lawn.

Established, Warm-Season Grasses

Warm-season grasses include Bermuda and zoysia. They benefit from fertilization prior to re-seeding in the spring. This will improve growth and greening. Then fertilize again during the late summer and early fall. Use a bit more nitrogen during late summer and fall, and a bit less during the spring. Conduct a soil test to confirm the proper nutrients your lawn requires to achieve the best results.

Grass Seed Or Fertilizer First?

Seeding a lawn is a precise business and requires careful preparation to encourage proper seed germination and growth. You can also place both fertilizer and seed into the same broadcast fertilizer and spread, but you must be careful to ensure that the two are thoroughly mixed, or else you will end up with an unequal distribution of seed and food. The best time to sow grass seeds is in early fall. If the seed has not had time to establish, the frost may kill it. If you apply weed and feed to the lawn before you seed, wait at least six weeks to apply seed.