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when should i weed and seed my lawn

Weed and feed fertilizers are often used in combination with seeding. Weed and feed formulations consist of two components: a herbicide to kill weeds and a fertilizer to strengthen the turf. The herbicide will weaken the grass as well as the weeds and the fertilizer will strengthen the weeds as well as the grass. When applying seed over a weed and feed application, remember that some weed and feeds can prevent grass seeds from growing.

It’s important to know a little about herbicides so you can make the best choice for when to apply seed in an area that has been treated for weeds. The most common types of herbicide in weed and feed products are selective and systemic. Selective herbicides target a species of plant to kill while systemic herbicides work by being absorbed though the roots and then transported throughout the plant, killing it from within. Read the bag label to see what kind of herbicide is used in the weed and feed you are considering using or have used. The bag label will tell you how many days you must wait before applying seed to a lawn that has been treated with that product.

Types of Herbicide

Herbicides can target weeds before they germinate from seed – pre-emergent – or as developed plants – post-emergent. Before you seed, you can use a non-selective, post-emergent herbicide to control any weeds in the area to be seeded. Most of these can be applied up to two weeks before seeding to control any existing weeds. Herbicides should not be used after seeding until the new seedlings are established. Mowing and spot treatments can be used to control weeds until the seeded area is actively growing and requires only maintenance watering. Establishment times vary depending on the type of seed you use and your weather conditions.

Only use a weed and feed if the weed infestation is completely uniform over the entire lawn and all species of weeds targeted will be affected by the herbicide in the weed and feed. This scenario doesn’t occur often, so it is more likely the use of an herbicide and a fertilizer separately will be needed. If the weeds are uniformly spread over the area to be treated, match the appropriate weed and feed product to your grass, the seed you have recently applied or want to apply, and the time of year.

It is important to know what kind of grass you have growing or want to have growing. Certain chemicals act differently on different species of grass and weeds. For example, the common herbicide 2,4-D is toxic to some cultivars of St. Augustine grass (Stenotaphrum secundatum), which grows in the area roughly covered by U.S. Department of Agriculture plant hardiness zones 8 through 10. Another common herbicide, atrazine, is potentially lethal to grass when applied in temperatures above 85 degrees Fahrenheit. Use the instructions on the bag of each weed and feed product to determine how it will affect seeding.

For a simple, all-in-one approach to a thicker lawn, you can put your lawn on the fast track with Pennington Lawn Booster. This easy-to-use product simplifies overseeding to give your lawn the boost it needs. In just one application, your lawn will grow quicker, thicker and greener than ordinary grass—guaranteed.

Better seed yields better lawns. Always use grasses recommended for your regional climate and choose top-quality grass seed you can depend on. Pennington Smart Seed products provide premium grass seed appropriate for sun, shade or high-traffic areas in lawns in northern or southern regions. Three-in-one Pennington Lawn Booster combines superior Smart Seed varieties with premium-grade fertilizer and soil enhancer.

There’s a secret behind achieving a beautiful, lush lawn. Landscape professionals know what it is, but many homeowners don’t. Overseeding—as part of a comprehensive, proactive plan—keeps lawns looking great. Whether you’re tending your first lawn or have years of experience, learning how to overseed your lawn can improve your results.

Spread Your Seed

For the lawn of your dreams, don’t wait to overseed until your lawn looks less than its best. Give your lawn the boost it needs, step-by-step or all-in-one. Pennington’s here with premium grass seed and lawn care products to help you keep your lawn at its peak.

Pennington, One Step Complete, Smart Seed, and Ultragreen are trademarks of Pennington Seed, Inc.

Available in formulas for sun & shade or tall fescue lawns, Lawn Booster combines three essentials: seed, fertilizer and soil enhancer. Lime-enhanced, pure-bred Pennington Smart Seed, backed by years of breeding and research, adds beauty and sustainability. Once established, these water-conserving grasses require up to 30 percent less water than ordinary grasses. That’s year after year, for the life of your lawn. Plus, they stay green up to three weeks without watering. That means less work and more leisure time for you.

Apply seed at label-recommended overseeding rates, using the lawn spreader that suits the job. Use drop or broadcast spreaders for large lawns and handheld spreaders for smaller areas. For small spots, simply seed from your hand. Work when the air is calm, so seed distributes evenly.

You can also choose from a range of more specialist mixes, like Miracle-Gro EverGreen Luxury Lawn Seed, which uses a sports-grade seed, or Miracle-Gro EverGreen Shady Lawn Seed, that’s designed to thrive in more shady locations.

Once that’s finished, rake the whole area to make sure your seed is distributed evenly across the soil.

Choosing seed

Watching your lawn grow is one of the most satisfying parts of the process.

To give your seed the best chance to grow evenly, first you need to prep your lawn. We recommend killing off the old lawn before any cultivation. Just skimming off the old grass can leave behind weed roots which will grow again to re-infest the new lawn. Clear all debris off the lawn such as stones or roots and rake the soil flat to give you an even surface to work with. You can do this by forking over the surface with a rake or level.

Alternatively, if you have a spreader with a half seed rate employ this setting on your spreader.