In late fall, ultraviolet rays cause a yellowing process to begin in pines, a natural leeching of chlorophyll from the needles. Left unchecked, this yellowing spells disaster for Christmas tree growers. Years of research have gone into developing and formulating Oleary Christmas Deluxe II to take your trees to market with resilient deep green color. Oleary recolors the tree and blocks ultraviolet rays that cause yellowing. The color is harmless to trees and safe for the user. Once its applied, it presents no hazards to children or pets and will not slow future growth. 2.5 gallon, should be diluted in water at 1:30 ratio. One undiluted gallon of colorant will treat about 60 trees.