Use translucent row covers for better temperature control in northern and cooler areas. Plant crops 10 or more days earlier. Promotes earlier maturity and higher yields in tests. Reduces wind damage. Daytime temperatures under these covers are elevated an average of 10 to 30°F., for better crop growth. Provides frost protection (1-4°F.). Harvest crops up to 2 weeks earlier than normal. 1 mil. Thickness, 3/8" holes spaced at 4-1/2". Works best with 54" Wire Support Hoops.