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Lawn Care & Landscaping
Free Grass Seed Calculator
Enter your lawn size for an instant tall-fescue seed estimate and the best NoVA seeding window.
The Short Answer
This calculator estimates how many pounds of tall fescue seed your lawn needs based on standard agronomic seeding rates — 4-6 lbs per 1,000 sq ft for overseeding, 8-10 lbs per 1,000 sq ft for new lawn establishment.
Free Interactive Tool
Grass Seed Calculator
Enter your lawn size for an instant tall-fescue seed estimate and the best NoVA seeding window.
Frequently Asked Questions
Free Grass Seed Calculator FAQs
When is the best time to overseed in Northern Virginia?
Late summer through early fall — specifically August 15 through October 1 — is the best window for tall fescue, when cool nights and fall rains help seed establish before winter dormancy.
Why does new lawn seeding need more seed than overseeding?
A new lawn is starting from bare soil, so a higher seeding rate (8-10 lbs/1,000 sq ft) is needed for full coverage, versus 4-6 lbs/1,000 sq ft when thickening an existing lawn.
Do you offer professional overseeding service?
Yes — our Aeration & Overseeding program starts at $250 for a typical Northern Virginia lawn, including core aeration to relieve clay-soil compaction.
Can I seed in the spring instead?
Spring seeding is possible but riskier for tall fescue — seedlings have to compete with summer heat and crabgrass before they’re established, so fall is strongly preferred.
Do I need to sign a contract to use the Free Grass Seed Calculator?
No. It is a free planning tool with no obligation — use it as many times as you like, and nothing is booked until you tell us to book it.
How is my result different from a final quote?
Your result is a planning estimate. We confirm exact pricing with a free on-site visit and send a written, line-item quote within 24-48 hours.
Why do you ask for my contact info before showing the result?
So we can save your estimate and text or email it to you. We never ask for payment information, and you can always call or text (703) 650-5655 directly instead.
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No cost, no obligation — and a written quote whenever you're ready.