A cold frame is simply a box with a clear sloping lid and an open bottom allowing you to add protection from the cold to any ground space in your garden.
These cold frames are low to the ground, creating a compact, controlled growing environment that will keep the soil warm and protect your plants from harsh gusts of wind. Whether you're overwintering plants or eager to get seedlings started in early spring, cold frames are essential for any keen gardener who doesn't have room for a greenhouse. Single cold frames have one opening lid at the top for access and ventilation, and double cold frames have two separate lids allowing you to keep one opened and one closed as needed, adding versatility to what you can grow.
Wooden cold frames are an inexpensive option, perfect for smaller gardens. They're made with pressure-treated timber to ensure they won't rot and are topped with a strong plastic lid made with acrylic or Perspex that lets the sunlight in and keeps the cold wind out. Forest Garden cold frames are made with FSC certified timbers that carry a 15-year guarantee against rot, so they're a great choice for long-term use. Zest 4 Leisure double cold frames are made from responsibly sourced pine and spruce timbers that are also pressure treated, so you will be able to overwinter autumn seedlings for many years to come.
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