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will grass seed go bad?

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  • May 12th, 2017 10:25 am
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Deal Guru
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Feb 23, 2008
12451 posts
1377 upvotes
Brampton

will grass seed go bad?

I have a bag of grass seed about 5 yrs now and used it to fill in some holes in my lawn. Is it still good? It was kept in the original bag and inside my garage where it sat for 5 winters and summers. Will it grow?
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5 replies
Deal Fanatic
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Nov 19, 2004
8990 posts
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Cambridge, ON
Different seed will be viable for different lengths of time. 5 years may be pushing it for most seed, but you might be fine with any rye grass portion.

Only one way to find out.
Sr. Member
Mar 19, 2013
696 posts
210 upvotes
Prince Albert, Sask.
Most seed companies are saying 2-3 years.
Moderator
May 28, 2012
11552 posts
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Saskatoon
Magoo61 wrote: Most seed companies are saying 2-3 years.
Plus storage conditions affect the viability of most seeds (heat and moisture). A germination test can be done using a damp paper towel inside a ziploc sandwich bag...sprinkle in a set number of seeds and see how many sprout.
Deal Fanatic
Jun 7, 2005
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I didn't even know they would go bad. I still have a couple unopened bags in my storage........
Deal Addict
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Aug 10, 2015
1925 posts
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Elgin, ON
Good question.

Ideally, the seed should be used in 12-18 months. If using beyond that time frame, apply more liberally, as you may get a lower germination rate. If stored in ideal conditions, some ryegrass seeds may still be viable for up to about 5 years.

It looks like I should return some seed I bought. I bought 18kg, total but only ended up using about 5kg. At most, I'll use another 8kg by the end of next spring.

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