Root cellars utilize natural processes to create an ideal storage environment for vegetables, specifically root crops (by definition). Before the days of refrigeration, cellars were the only option for storing crops beyond their season. The key parameters that lengthen storage life are temperature, ventilation, and humidity.
Temperature
- Ideal temperature range for most vegetables if 32 -40 F
- Borrow cold by digging into the ground
- Keep cold by designing the cellar to trap cold air
Ventilation is key
- Helps regulate temperature
- Removes gases that hasten spoilage
- Low intake vent, high exhaust vent creates natural air cycle
Humidity
- High humidity keeps vegetables from shriveling
- A dirt floor utilizes moisture in the ground to keep humidity high
- Misting the walls or leaving out pans of water will keep the cellar moist
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