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How long does onion live?

Published in Onion Storage Life 2 mins read

Whole, raw onions generally remain fresh and viable for two to three months when stored correctly. This duration refers to their optimal freshness for culinary use after harvest.

Optimal Storage Conditions for Onions

The longevity of a harvested onion is significantly influenced by its storage environment. To maximize their shelf life, whole, raw onions thrive in specific conditions that mimic their natural dormancy requirements:

  • Temperature: Ideally, onions should be kept in a cool environment, specifically between 45 and 55 degrees F (7 to 13 degrees C). Temperatures much lower (like a refrigerator) can cause them to become soft and sprout prematurely, while warmer temperatures can accelerate spoilage.
  • Darkness: Storing onions in a dark place prevents them from sprouting, which is a common sign of declining freshness. Light exposure can trigger photosynthesis, leading to greening and sprouting.
  • Dryness: Moisture is the enemy of stored onions. A dry environment is crucial to prevent mold growth and rot. Good air circulation also helps to keep them dry.

Ideal Storage Locations

Finding a suitable spot in your home that offers these conditions can significantly extend the life of your onions. Common places that fit these criteria include:

  • Cellar: Often cool, dark, and with consistent temperatures.
  • Pantry: If it's not too warm or humid, a pantry can work well, especially one away from heat sources.
  • Unheated Basement: Similar to a cellar, basements typically provide a stable, cool, and dark environment.
  • Garage: An unheated garage can be an excellent option during cooler months, as long as it remains relatively dry and protected from extreme temperature fluctuations.

Proper storage ensures that onions retain their flavor, texture, and nutritional value for an extended period, making them a staple ingredient readily available in your kitchen.