Uncarved pumpkins can last two to three months if kept out of the hot sun or freezing temperatures. Carved pumpkins may last only a few days, so time your carving accordingly if you want to display them on Halloween.

How do you make uncarved pumpkins last longer?

Will an uncarved pumpkin rot?

Uncarved pumpkins will generally decay at a slower rate than those that get emptied out and carved. Still, they won't last forever. Bleach and other household cleaning products can be used to keep pumpkins from rotting.