Crop Cover is a general medium weight all around floating blanket. This blanket will keep plants warm and guard against light frosts allowing water, air, sunlight and soluble fertilizers to pass through. This can effectively increase your growing days by applying the cover in early spring, taking off during the hot summer months, re-cover in the fall. Crop Cover vents air and excess moisture so it can be left on the plants during the day. Protects against drying winds and insects during over-wintering. Suitable for vegetable gardens, strawberry patches and nursery stock. May be doubled for increased frost protection. Available in 6' x 500' or 6' x 250' rolls, transmits 70% light, protects down to 26 degrees, life expectancy of 2 years.