Helictotrichon sempervirens Blue Oat Grass Description Bright steel blue foliage begins narrow and widens as the plant matures. An upright form with foliage gently arching downward at the top. Appears to take on the form of a water fountain. Tan seedheads are produced in early summer. Prefers dry soil. Sizes & Prices All Grass, Blue Oat Characteristics Hardiness Zone: 3 Light requirements: Sun Height: 18-24" Native: No Sizes & Prices Size: 2 Yr $15.98 Other Information Blue Oat Grass Helictotrichon sempervirens Zone: 3 Sun HT: 18-24"