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Gunther Heller

Does Thyme Go Bad?

Source: USDA FoodKeeper and FSIS · last verified November 2026

Illustration of thyme
Thyme Per USDA FoodKeeper
Counter
1–2 weeks
cool, dry place
Fridge
2–3 weeks
at or below 40°F (4°C)
Freezer
Not listed
no FoodKeeper figure
Quick answer

Yes. Thyme lasts 2–3 weeks in the fridge. After that, or sooner if stored badly, it spoils: watch for the signs below.

How to tell if thyme is bad

Smell

A sour or rotting smell from the bag or bunch.

Texture

Slimy, wet or wilted leaves that do not perk up in cold water.

Colour

Dark green-black or brown leaves.

Mould

Any fuzzy growth — discard the bag.

Thyme past the expiration date

Best-by and sell-by

FoodKeeper gives unopened thyme 1–2 weeks in the pantry or 2–3 weeks 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

Thyme past its best-by date is usually safe if stored well; check smell, look and taste before using.

How to keep thyme fresh longer

  • Store dry, wrapped in a paper towel inside a bag or container.
  • Keep in the crisper drawer at 40°F (4°C) or below.
  • Stand herbs like cilantro and parsley in a glass of water in the fridge, loosely covered.

More about thyme

More “does it go bad?” answers, A–Z →

FAQ

How long does it take for thyme to go bad?
2–3 weeks in the fridge, per USDA FoodKeeper.
Can thyme expire?
FoodKeeper gives unopened thyme 1–2 weeks in the pantry or 2–3 weeks 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 thyme?
Usually an unpleasant taste rather than illness, but discard anything mouldy, rancid or smelling off.
How do you keep thyme from going bad?
Store dry, wrapped in a paper towel inside a bag or container.
Numbers on this page come from USDA FoodKeeper and FSIS guidance. Last verified November 2026. How we verify our data · Report a wrong number