The Q&A Archives: grass seed

Question: how long will grass seed keep before planting

Answer: Grass seeds, like any seeds, will deteriorate over time, especially if they are exposed to warm temperatures and humidity. Typically they will remain viable for about 2 years. After that some of the seeds will still germinate, but not all. You can test the percentage of germination by placing 10 seeds between dampened a paper towel and sealing it up in a plastic baggie. Set it in a warm place such as a kitchen counter and check the seeds in 7-10 days. Count how many have sprouted and that will give you a rough idea of the percentage of viable seeds. If only 5 sprout you will have only 50 percent viable seeds and will need to sow the seeds at double the recommended rate. Good luck with your seeds!

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