VANGUARD elm has waxy, lustrous leaves and an upright habit. It is adaptable to extremes in soil acidity and is noted for its moisture, heat and wind tolerance. This tree is a Chicagoland Grows® selection. Chicagoland Grows® is a plant introduction partnership of the Chicago Botanic Garden, the Morton Arboretum and the Ornamental Growers Association of Northern Illinois formed to promote plant cultivars that perform well in northern Illinois. This variety was developed at the Morton Arboretum for its resistance to Dutch elm disease and the elm leaf beetle.