growbiggerplants agribon ag-19 floating row crop cover/frost blanket/frost cloth/garden fabric plant cover growbiggerplants stronger grade to last longer. provides up to 4o +f frost protection for valuable, frost-sensitive perennials and sensitive vegetables.agribontm floating row covers have all the qualities of other brands, while being more affordable and with seams double-bonded for ultra-strength. these floating rowcovers increase yields, prolong seasons, reduce soil erosion, protect against frost, speed up germination, minimize wind damage, conserve soil moisture, deter birds and protect against extreme temperatures. high quality spun-bonded polypropylene cover is light enough (0.55 oz./sq.yd.) to be laid directly over plants without hoops or frames but strong enough to withstand light to moderate wind and other stress. no need to remove it during the season because it is porous to water and air and has 85% light transmittance. it provides up to 4°f of frost protection, warms the soil and is a good animal barrier. it also conserves water by reducing evaporation. it is similar to other rowcovers but generally longer lasting. uv stabilizers increase expected field life to 2 to 3 seasons.