December Cloche and Fleece Use for Emergency Frost Protection

December’s unpredictable weather means an overnight frost can arrive without warning, threatening salads, overwintering greens, young onions, and even bulbs or perennials. Quick use of cloches and horticultural fleece can mean the difference between thriving crops and disappointing losses. Here’s how to master December cloche and fleece use for fast, effective frost protection.

Why Use Cloches and Fleece in December?

• Defends against sudden frosts: Create a microclimate several degrees warmer than bare soil.
• Extends harvests: Keeps salad leaves, Asian greens, and winter lettuce growing longer outdoors.
• Shields tender roots and crowns: Prevents frost heave and protects overwintering onions, garlic, strawberry crowns, and newly planted bulbs.
• Easy, flexible, and reusable: Both cloches and fleece can be moved, doubled, or adapted for changing weather.

Types of Cloches and Fleece for December

• Rigid plastic, glass, or tunnel cloches: Perfect for covering rows of salad and root crops.
• Horticultural fleece: Lightweight, breathable fabric for draping over beds, rows, trays, or pots.
• Pop-up garden tunnels or homemade hoops: Hoop wire or plastic bent over beds, covered with polythene or fleece.
• Bell cloches or upturned jars/bottles: Great for protecting single plants or early bulbs.

How to Use Cloches and Fleece Effectively

1. Monitor the Weather Forecast
   • Cover crops in the afternoon if a hard frost is predicted for that night.
2. Lay Fleece Directly Over Crops
   • Gently drape fleece so it “floats” above the leaves; anchor edges with stones, bricks, or garden pegs.
   • Avoid compressing soft leaves or burying crowns.
3. Place or Slide Cloches Over Rows and Trays
   • Ensure the ends are closed for maximum warmth.
   • Lift on mild days to let air in and prevent fungal build-up.
4. Double Up for Severe Cold
   • Use two layers of fleece, or combine fleece on crops under a plastic cloche.
5. Remove or Ventilate Daily
   • Uncover fleece and cloches on mild, sunny days to reduce excess moisture and allow light and airflow.
   • Recover at dusk to trap daytime warmth.

Extra December Frost Protection Tips

• Label covered beds so you don’t forget what’s protected.
• Use fleece to wrap potted herbs or vulnerable shrubs.
• Fold and store dry fleece/cloches after each use to prevent wear.
• Inspect after storms—strong winds can blow off covers, exposing crops.

A quick cloche or fleece intervention in December can save entire beds from a damaging freeze. With these handy tools within reach, your winter crops gain strong, flexible defense against whatever December brings.