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Using Year-Old Grass Seed: Viability and Seeding Rate

Seed stored dry in a garage for over a year loses vigor. Check the bag's packaging date—viability drops after 6 months. Cold storage (fridge) is better than garage.

If You Sow It

Sow now—early fall soil temps are ideal.
Increase rate to 6–8 lbs/1,000 sq ft to compensate for lower germination.
Prepare soil well, ensure seed-to-soil contact, keep seedbed constantly moist until emergence.

Don't delay; later fall seeding risks poor establishment before winter.

Lawns: Seeding Over Dead Sod: Preparation Essentials; Allowing New Grass to Self-Seed: Timing and Effectiveness; Grass Seeding in Michigan: Sod vs. Seed; Fall Lawn Plan: Identify Weeds, Then Seed or Weed-and-Feed; Using Year-Old Grass Seed: Viability and Seeding Rate; Choosing the Right Grass Seed Mix for a Zone 6 Lawn; Protecting Grass Seed from Birds with a Simple Straw Mulch Technique; Grass Seed Germination, Insect Concerns, and Weed Control Basics; Seed-to-Soil Contact: Do Grass Seeds Need Full Coverage?; Plant Grass Seed Like a Pro: Weekend Lawn Establishment Guide

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