Any gardener or horticultural company can reduce their carbon footprint by using these new MCG Biomarkers. Durable and long-lived plant markers are made from DuraMaze a blend of biomass, natural fibers from corn cob by-products and recycled plastics. Each pack of markers come with a sheet of weatherproof pressure sensitive labels or the markers can be written on directly with a hort pen or permanent marker. 4 colors to choose from-green, white stone, terra cotta and black. The 9in markers have a 3in x 2in face plate area and the 13in has a 4in x2 1/2in face plate area.