when to fertilize lawn in illinois

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(September 1-15)

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  • What is the best time to plant grass seed in Illinois?

  • August Mid- to end of August is the best time to seed bare areas of lawn, overseed thinning grass, or lay down sod. When seeding lawns, use grass seed appropriate to your site. The best choice for most lawns in northern Illinois is a mix of Kentucky blue grass, perennial rye, and fescue seeds.

  • What is the best time of year to fertilize lawn?

  • Begin mowing when the grass reaches a height of approximate 4 inches. Do not fertilize your lawn in hot weather. The best time to fertilize is fall. Established turf requires approximately 1 inch of water per week to keep grass green and actively growing.

  • How much slow release fertilizer should I Feed my lawn?

  • Adequately feeding 3/4 to 1 pound of slow-release nitrogen will allow the grass to rebuild its energy (carbohydrate) reserves and ward off the stresses of summer, such as drought, heat, traffic, disease, and insects. A polymer-coated slow-release fertilizer can feed the grass for up to 12 weeks.

  • What is the best way to fertilize my lawn?

  • First feeding: If you feed your lawn a couple of times a year, a light application of lawn food in early spring will help get your grass off to a great start. Keep it light and use a slow-release or organic fertilizer.

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