This seed and frost blanket provides essential protection by establishing a stable, favorable microclimate over your plant(s). It by captures extra heat during the day and slows the loss of stored heat at night. The frost blanket ‘floats’ without suffocating, crushing, or breaking delicate plants. This light weight blanket is porous to air, water and nutrients and is UV stable. Long, wide roll covers a lot of area- use directly on the seed or plants, or drape over a frame above the row. Great for protecting grass seed. Used properly it can also help reduce garden pest pressure on young seedlings.