Discover how a simple hotbed can give your seedlings a warm head start, even when the weather is still cold. With layers of compost or manure generating natural heat, it’s an easy, old-fashioned way to grow crops out of season.
season extension
Overwintering Perennials in a Cold Frame
Give container perennials, strawberries, herbs, vegetables, and flowers a cozy head start through winter with a simple cold frame. Learn how to combine mulch, compost, smart placement, and ventilation to protect plants from freezing temperatures while extending your harvest.
Using Thermal Mass in Cold Frames and Hot Beds
Discover how thermal mass can turn cold frames and hot beds into hardworking season extenders. From water-filled bottles to stone, brick, and soil, learn simple ways to store daytime heat, protect tender crops from frost, and enjoy fresh harvests well into winter.
What to Plant in a Cold Frame Month by Month For Early Spring Harvests
Discover how to use a simple cold frame to grow fresh spinach, lettuce, radishes, carrots, and more month by month. Extend your harvest well beyond the frost date with easy planting tips, salvaged-material ideas, and practical ventilation advice.
How to Extend Your Winter Salad Garden With Cold Frames and Row Covers
Keep fresh salads on your table all winter with simple cold frames and row covers. Discover how to protect hardy greens and root crops from frost, extend your harvest by months, and enjoy thriving garden produce through the cold season.


