Blank labels are all made from 0.19-0.20 (19-20 mil) virgin styrene for a durable, stiff product that is easily inserted and written on.
These blanks also have a creasing rule at the point. Growers use graphic pencil, mechanical pencil, standard markers, grease markers and other instruments to write on them. Some use the various colors as crop markers without writing for growing activities at their nursery.