shelf life of grass seed? - Knowledgebase Question

clifton park, Ne
Question by celiseo
April 22, 2010
How long will grass seed remain viable? (will it last more than one season?) How can you test for whether it will germinate?

Answer from NGA
April 22, 2010


Good question! When properly stored, grass seed will remain viable for 2-3 years. The enemies of seeds are light, heat and humidity. If stored in an airtight container in a cool, dark place the seeds will remain more viable than if they are left out in the elements. You can check the germination rate by placing 10 seeds between the folds of a damp paper towel, putting the papertowel into a plastic bag and setting it in a warm place such as a kitchen counter. Wait 7 days and then count the number of seeds that have sprouted. This will give you an idea of the germination rate. If all 10 sprout, you can sow the seeds at the recommended rate (as listed on the seed package). If only 5 of the seeds sprout, you'll need to double the application rate. Best wishes with your lawn.

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