Seed Calculation Formula:
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The coverage rate indicates how many square feet one pound of grass seed will cover. Different grass types have different recommended coverage rates for optimal growth and density.
The calculator uses the formula:
Where:
Explanation: The calculation determines how much seed you need based on your lawn's area and the specific grass type's coverage rate.
Details: Using the correct amount of seed ensures proper lawn density - too little results in bare spots, too much causes competition and wasted seed.
Tips: Measure your lawn area accurately and check the seed package for the recommended coverage rate. Typical rates range from 100-400 sq ft per lb depending on grass type.
Q1: What's a typical coverage rate for common grasses?
A: Kentucky Bluegrass: ~100 sq ft/lb, Tall Fescue: ~200 sq ft/lb, Fine Fescue: ~250 sq ft/lb, Perennial Ryegrass: ~300 sq ft/lb.
Q2: Should I use more seed for new lawns vs. overseeding?
A: Yes, new lawns typically need about twice as much seed per square foot compared to overseeding existing lawns.
Q3: Does soil condition affect seeding rate?
A: Poor soils may require slightly higher rates to account for lower germination rates, but focus on soil preparation first.
Q4: When is the best time to seed my lawn?
A: Cool-season grasses: early fall; Warm-season grasses: late spring to early summer.
Q5: How long does grass seed last?
A: Properly stored seed remains viable for 2-3 years, but germination rates decline over time.