Calculate grass seed for your lawn
Seed Needed
25
pounds
5 lb Bags
5
Starter Fertilizer
25 lbs
Best Time to Seed
Fall (late August to mid-October) or early spring
Watering
Keep soil moist (not soggy) until germination. Water lightly 2-3 times daily.
Inputs
Result
New lawn: (5000 / 1000) x 8 = 40.0 lbs, ceil(40/5) = 8 bags. Overseed: (5000 / 1000) x 5 = 25.0 lbs, ceil(25/5) = 5 bags. Fertilizer: 5000 / 200 = 25.0 lbs, ceil(25/20) = 2 bags.
Inputs
Result
New lawn: (3000 / 1000) x 3 = 9.0 lbs, ceil(9/5) = 2 bags. Overseed: (3000 / 1000) x 2 = 6.0 lbs, ceil(6/5) = 2 bags. Fertilizer: 3000 / 200 = 15.0 lbs, ceil(15/20) = 1 bag.
For new lawns: Kentucky bluegrass needs 3 lbs/1000 sq ft, while tall fescue and perennial rye need 8 lbs/1000 sq ft. For overseeding, use about 60-70% of new lawn rates.
Fall is ideal for cool-season grasses (late August to mid-October). For warm-season grasses like Bermuda, overseed in late spring when soil reaches 65-70°F.
Yes, starter fertilizer promotes root development. Apply at seeding time at about 1 lb of actual phosphorus per 1000 sq ft. Avoid high-nitrogen fertilizers initially.
Perennial rye: 5-10 days. Tall fescue: 7-14 days. Kentucky bluegrass: 14-21 days. Bermuda: 7-14 days. Keep soil consistently moist during germination.
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Last Updated: Feb 12, 2026
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