Celery has a short shelf life in the fridge, but you can prolong its freshness for up to four weeks by storing it properly. Food storage expert Mike from Kitchen Tips Online recommends wrapping celery tightly in aluminum foil and placing it in the coldest part of your fridge, which is usually the crisper drawer. This method protects celery from ethylene gas, which is emitted by ripening fruits and can cause celery to wilt. If your celery has already started to wilt, you can try submerging it in a glass of iced water to shock it back to life.