Use Dark Green to create grasses and weeds along roads and in ditches. This also would be great to model the grass over septic tanks and lines. 57.7 in (945 cm) Shaker. Static Grass Flock is a fiber product that models grass and/or weeds. It is available in six colors and can be used alone, or withFine Turf. Place under trees, along ditches, or as forest litter. Attach with Scenic Cement. 1/16″ – 1/8″ (1 mm – 3 mm) in length.