Pumpkin seeds in the shell Per USDA FoodKeeper
On the counterCounter
6 months
cool, dry place
In the fridgeFridge
Not recommended
at or below 40°F (4°C)
In the freezerFreezer
Not listed
no FoodKeeper figure
Quick answer
Yes. Pumpkin seeds in the shell last 6 months in the pantry. After that, or sooner if stored badly, they spoil: watch for the signs below.
How to tell if pumpkin seeds in the shell are bad
Smell
Rancid: like crayons, paint or old nuts.
Taste
Bitter or soapy aftertaste.
Texture
Sticky or gummy residue around the lid.
Colour
Darkened or cloudy where it should be clear.
Pumpkin seeds in the shell past the expiration date
Best-by and sell-by
FoodKeeper gives unopened pumpkin seeds in the shell 6 months in the pantry or not recommended in the fridge, counted from the day you buy it. "Best-by" and "sell-by" describe quality and stock rotation, not safety; only infant formula carries a federally required use-by date.
Past the date
Pumpkin seeds in the shell past their best-by date are usually safe if stored well; check smell, look and taste before using.
How to keep pumpkin seeds in the shell fresh longer
- Keep in a cool, dark place, tightly closed, away from heat.
- Refrigerating nuts, seeds and nut oils extends shelf life significantly.
- Smell before using; rancidity is a quality problem you can detect.
More about pumpkin seeds in the shell
FAQ
How long does it take for pumpkin seeds in the shell to go bad?
6 months in the pantry, per USDA FoodKeeper.
Can pumpkin seeds in the shell expire?
FoodKeeper gives unopened pumpkin seeds in the shell 6 months in the pantry or not recommended in the fridge, counted from the day you buy it. "Best-by" and "sell-by" describe quality and stock rotation, not safety; only infant formula carries a federally required use-by date.
What happens if you eat bad pumpkin seeds in the shell?
Usually an unpleasant taste rather than illness, but discard anything mouldy, rancid or smelling off.
How do you keep pumpkin seeds in the shell from going bad?
Keep in a cool, dark place, tightly closed, away from heat.
Numbers on this page come from USDA FoodKeeper and FSIS guidance. Last verified November 2026. How we verify our data · Report a wrong number