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seeding weed infested lawn

Most deteriorated lawns have a built-up layer of dead and partially rotted grass stems, roots and rhizomes just below the green grass leaves. This is known as thatch, and it must be removed before reseeding so water and fertilizer can reach the new seed. For small lawns, you can remove thatch with a garden rake. For large areas, go over the lawn with a power dethatcher, also known as a vertical mower or power rake. These machines can be rented from garden centers. Remove the clumps of matter left by the machine with a garden rake and level the soil by raking it.

The best time for lawn renovation throughout the U.S. is mid-August to mid-September. Most weeds have not yet dropped their seeds and there will be little new weed growth. Also, reseeding at this time will give the new grass a chance to establish itself before going dormant for winter. Get rid of the weeds by manually pulling up large, spreading weeds. Follow up by applying a selective herbicide product that kills common broadleaf lawn weeds while not harming grass. For tough grassy weeds, like quack grass or crabgrass, use a nonselective herbicide such as glyphosate on the spots where these weeds have established themselves. Normally, all weeds will be dead within two weeks. Apply another herbicide dose in three weeks to get newly sprouted weeds.

The soil nutrients most important to healthy grass plants are nitrogen, potassium and phosphorous. Supply these nutrients by applying a commercial fertilizer formulated for starting lawns and lightly rake it into the soil before you reseed. Buy a grass-seed blend suited to your climate and local conditions and spread it over the lawn with a drop spreader or rotary spreader. Absent a different recommendation from the grass-seed grower, spread the seed at a rate of 2 pounds per 1,000 square feet on a lawn with substantial plots of live grass and 3 pounds per 1,000 square feet on bare soil. Water lightly once or twice a day to keep soil moist but not sopping wet. Don’t mow until the new grass gets 3.5 inches tall.

Remove Thatch

If you have had a dry summer with below-normal rainfall, you need to replenish soil moisture before preparing a seedbed. Give the entire lawn a thorough watering, soaking until water has penetrated to a depth of at least 6 inches, then allow the surface to dry for a day or two before starting soil preparation.

If you are faced with a neglected lawn that’s partially dead and is being taken over by weeds, you may be able to renovate it. Restoring a deteriorated lawn may be possible if the weeds and dead spots cover less than 40 percent of the lawn area. Renovation of a weedy lawn involves more than just mowing down the weeds and throwing some grass seed over the lawn.

Herb Kirchhoff has more than three decades of hands-on experience as an avid garden hobbyist and home handyman. Since retiring from the news business in 2008, Kirchhoff takes care of a 12-acre rural Michigan lakefront property and applies his experience to his vegetable and flower gardens and home repair and renovation projects.

A lawn full of weeds is not a pretty sight. Add in some brown and bare patches, and it’s all pretty depressing. But don’t worry – you can repair it and have a beautiful green lawn.

Below are some simple tips for repairing an ugly lawn. Before you start, it’s worth remembering that repairing a lawn takes time and patience. There’s no quick fix. However, take it step by step, follow these instructions and you’ll have a lawn to be proud of.

6 tips on repairing a lawn full of ugly weeds

Timing is also important. It’s best to start the process of repairing your lawn in spring or autumn, when it’s a little cooler. If it’s too hot or cold, it’ll be much harder for you to get the beautiful lawn you are after. Still struggling with weeds? Check out our top 5 tips for effective weed control.

If your lawn is patchy and full of weeds, it will never be the envy of the neighborhood. What you’re after is a lush, green lawn with even grass and no dandelions poking their way through. That may sound hard to achieve, but it isn’t too difficult if you follow these steps.

If you only have a few pesky weeds punctuating your lawn, you may be able to dig them up by hand—paying careful attention to make sure you get them roots and all. But if your lawn is overrun with weeds, you may need to start from scratch. Here’s our how-to guide on restoring a lawn full of weeds.

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You have a choice ahead of you. Do you want to lay down seed or sod? There are pros and cons to each.

In order to make a successful game plan, you’ll need to know just what kind of weeds you’re dealing with. Weed treatments are designed to target specific weeds, so what may work on your broadleaf weeds may leave your grass-like weeds A-OK.

To prepare the soil after either method, make sure you till it down to roughly 6 to 8 inches.