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when to weed and seed lawn

When to weed and seed lawn

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.

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.

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 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

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.

Pre-Emergent Herbicides

When to weed and seed lawn

Weed and feed can be in either liquid or granular form, but regardless of which type you choose, both kill just the weeds, and not regular, healthy grass, unless you apply too much.

Pre-Emergent Weed and Feed vs. Post-Emergent Weed and Feed

Here are some quality picks worth your time;

When to Apply Weed and Feed?

If you’ve used organic weed and feed, then you’re OK to add the grass clippings to your compost pile, but if you used a chemical based product, then rather leave the clippings on the lawn to allow rain to wash the chemical back into the soil.

And moss is a plant that thrives in damp, shady, acidic spots like under trees, where grass will always struggle. The smart money says to encourage moss in those kinds of areas. After all, the moss will be green all year, and never need feeding or cutting.

Where a lawn is free to grow, just care for the grass correctly. But where big trees are always giving the lawn a horticultural wedgie, give up on grass and embrace the moss.

Jennifer up in Baltimore writes: “I am very intrigued by your recommendations to inoculate peas and beans before planting! I want to give this a try, but I’ve already put my peas (that I pre-sprouted indoors) in the ground. Is there any way that I can still inoculate them? I plan to inoculate my beans the traditional way later in the season.”