Are you confused about the grass seeds, its storage, and viability? Find out about Does Grass Seeds go Bad and the factors that affect them!

Some gardeners store large amounts of grass seed in a shed or garage to be reseeded when the lawn needs it. But what about their last day of work? Does grass seeds stay workable for a long time or cause problems?

Do Grass Seeds Expire?

Grass seeds can go bad with time and cannot be purchased on an old date. It is a good idea to throw away unused seeds that have crossed the expiry date.

You need to use more seeds than you actually have time for. You have to spend more time in irrigation, feeding and nurturing expired seeds that will not produce grass anymore.

How Long can Grass Seed be Stored?

Grass seeds have a reduction in their germination rate of 10% per year according to many seed companies and professionals.

If the package or box of the grass seed states that 90 percent of the seed would germinate when fresh, it will decline to 80 percent in year two, and 10 percent each year subsequently though it is also affected by how you are storing the seeds.

In a research conducted by Oregon State University, that 50 percent of perennial ryegrass, Kentucky bluegrass, and fescue seeds can germinate after 3-5 years if stored properly, while 50 percent of creeping grass seeds can sprout after five years or more.

How to Store Grass Seeds?

Grass seeds can be kept in a dry place for better air circulation. The temperature needs to remain around 40 F. In a garage or shed where the temperature can be 32 F, don’t store seeds. The bags have to be off the floor because mice cannot reach them.

It is best to keep the seeds in a cellar or basement, if desired. You can keep them cool. There is an open box of baking soda. It helps to absorb the excess water.

How to Check Seed’s Viability?

Put a paper towel on the plane. Roll the sheet with seeds in a row. Put it in a bag and keep away from heat for one week.

Remove the bag and count how many seeds are present. If at least six seeds sprout, that means they have a good chance of germinating. You can only get fresh grass seeds in a few cases, if 4 or fewer Seeds Grow.

Factors Affecting Seed Viability

Storage conditions are what affect the viability of seeds. If seeds are stored in a cool and dry place, they can last longer. Seed viability is affected by factors

10% is the necessary internal humidity for most seeds. They have a chance of dying when exposed to high humidity. seeds do not go below their optimum internal levels Sweat comes from the atmosphere and is absorbed by them.

The storage temperature for most seeds is below 60 F (15 C). The viability of a seed can be affected by temperature.

If you are storing seeds in containers that have air, there is a chance of condensation.


Old grass seeds do not have a high rate of growth like freshTurfs, so they should be used for second seeding or top seeding. New grass seeds should be stored in a sealed plastic bag or container that won’t allow the soil to absorb the elements. Increases the viability of seeds There is a place to store seeds in the cool and dry.

seeds will be viable if the storage temperature is cold and relative humidity dry. You can keep them in a cool location, or they might be kept out of sight. If you follow the instructions on the label, they will last for up to five years.

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