The effect of two benzimidazole fungicides, 2‐(4‐thiazolyl) benzimidazole (thiabendazole) and methyl l‐(butylcarbamoyl)‐2‐benzimidazole carbamate (benomyl) on growth and foliar element accumulation of ‘Penncross’ and ‘Seaside’ cultiyars of.Agrostis palustrisHuds. and ‘Merion’ cultivar ofPoa pratensisL: was investigated ina series, of greenhouse and field plot experiments. In the greenhouse, soils.with varying concentrations of the materials were seeded. with ‘Penncross,’ and ‘Merion. In the field a 2 year old plant ing of the ‘Seaside’ cultivar (Agrostis palustris) was sprayed with thiabendazole, and benomyl formulations. Criteria employed for determining growth effectswere dry weight of foliage, dry weight of roots, and macro‐ and micro‐element accumulation by the. foliage,