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Under cover

Cold frame

If the frame is glazed with glass, handle it with care: panes can crack and cut, and the hinged lid is heavy and can trap fingers. Prop the lid securely when open. Toughened glass or polycarbonate is a safer choice where children or pets use the garden.

Where to get help
Seek medical advice or call NHS 111, or follow the product label

A low unheated glazed box.

Best for

Hardening off, cuttings, alpines, early salad

Notes

The cheapest way to extend the season.