A frost blanket for plants helps reduce exposure to light frost, cold wind, and rapid temperature changes when selected and installed correctly. Compare frost cloth, floating row cover, and fitted plant covers by dimensions, fabric weight, light transmission, intended use, and the manufacturer’s stated protection.
Choosing a frost blanket
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Size: allow enough material to reach the ground or fully enclose the plant without compressing foliage
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Weight: lighter fabric generally transmits more light; heavier fabric may provide more insulation
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Support: use hoops or a frame when plants or snow load need clearance
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Ventilation: monitor covered plants during sunny weather to prevent excess heat and humidity
How to use frost cloth
Install the cover before temperatures fall, secure the edges against wind, and follow the product instructions. Protection depends on fabric, installation, wind, exposure, plant condition, duration of cold, and the actual low temperature; a blanket does not guarantee that every plant will avoid damage.
Inspect the cover after storms and remove or vent it when conditions require. Compare broader frost-protection supplies for structures, clips, and related covers.