Growing onions from bulbs can be a rewarding experience, and rooting them in the refrigerator can accelerate the process. Here are some tips for quickly rooting onions in the refrigerator and growing them successfully:

Materials Needed:

  1. Onion bulbs
  2. Plastic bag or container
  3. Paper towels or newspaper
  4. Potting mix or well-draining soil
  5. Pots or trays
  6. Watering can or spray bottle
  7. Transparent plastic or plastic wrap (optional)


  1. Selecting Onion Bulbs:
    • Choose healthy and firm onion bulbs for propagation. Look for bulbs that are free from diseases or damage.
  2. Prepare Bulbs for Refrigeration:
    • Place the onion bulbs in a plastic bag or container, and wrap them with dampened paper towels or newspaper. Seal the bag or container to create a humid environment.
  3. Refrigerate for 1-2 Weeks:
    • Store the prepared onion bulbs in the vegetable crisper drawer of your refrigerator. The cold temperature will stimulate root development. Aim for a refrigeration period of 1-2 weeks.
  4. Check for Root Development:
    • After the refrigeration period, check the onion bulbs for the development of roots. You should see small white roots emerging from the base of the bulbs.
  5. Prepare Planting Pots or Trays:
    • Fill pots or trays with a well-draining potting mix or soil. Onion plants prefer loose and friable soil.
  6. Plant Onion Bulbs:
    • Plant the onion bulbs in the pots or trays with the root side down. Space the bulbs according to the recommended planting distance for the onion variety.
  7. Watering:
    • Water the planted bulbs thoroughly. Ensure that the soil is consistently moist but not waterlogged. Watering is crucial during the initial stages of growth.
  8. Provide Adequate Light:
    • Place the pots or trays in a location with full sunlight. Onions prefer at least 6-8 hours of direct sunlight daily. If you are growing onions indoors, consider using grow lights.
  9. Optional: Create a Greenhouse Effect:
    • Cover the pots or trays with transparent plastic or plastic wrap to create a greenhouse effect. This helps maintain humidity around the onions and promotes faster growth.
  10. Maintain Moisture:
    • Keep the soil consistently moist throughout the growing period. Onions prefer well-drained soil but need consistent moisture for optimal growth.
  11. Fertilize (Optional):
    • If your potting mix lacks nutrients, you can fertilize the onions with a balanced, all-purpose fertilizer following the recommended application rates.
  12. Harvesting:
    • Harvest the onions when the tops begin to yellow and fall over. Allow the harvested onions to cure in a dry, well-ventilated area for a few weeks before storage.

By rooting onions in the refrigerator before planting, you can encourage faster and more robust root development, leading to healthier onion plants. This method is particularly useful for regions with shorter growing seasons, allowing you to get a head start on your onion crop.