Grape Storage & Handling Best Practices
- High-quality fresh Grapes from California will have green, pliable stems and plump berries. Proper postharvest handling will maintain these qualities.
- Store grape boxes immediately in refrigeration when received. The ideal condition for grapes is 30 – 32 F with 90 – 95 percent relative humidity. These conditions prevent water loss and stem drying in table grapes.
- Grapes generally have a much longer shelf life than other berries but they still need care to keep them at their best. For example, rough handling can remove bloom from grape skins, the natural and protective wax coating, and negatively impact quality.
- Do not store grapes near a cooling unit’s direct air path to avoid accelerated dehydration.
- Providing good air circulation is one of the best ways to keep grapes in optimum condition. When buying in volume, gently stack grape boxes in the cooler so that air can circulate around them rather than directly on them.
- Like most berries, grapes tend to absorb odors. Try to avoid storing them next to green onions and leeks.
- Never store or display grapes where they will come in direct contact with water, ice or iced products, as these will decrease overall grape quality and shelf life.
