Blueberries
The answer
Fresh blueberries last 1–2 weeks in the fridge and 8–12 months in the freezer.
Caution Don't wash berries until right before eating — moisture speeds mold.
How long it keeps
Fridge (40°F) 1–2 weeks safe window
Freezer (0°F) 8–12 months best quality
Room temp 1 day then discard
Discard Discard moldy berries and any berries touching visible mold.
By state & packaging
State Fridge Freezer
Fresh, refrigerated 1–2 weeks 8–12 months
Signs it has gone bad
✕ Visible mold (white or gray fuzz)
✕ Mushy, leaking flesh
✕ Fermented or sour smell
FAQ
If one blueberrie is moldy, toss the whole container?
No — remove the moldy berry and any touching it, then use the firm ones soon. If mold is widespread, discard the container.