Hystrix patulais an upright, clump-forming perennial grass with coarsely-textured, linear, dark green leaves and, in summer, racemes of loose flowers opening bright green and fading to tan by autumn.
Winterhardy cool season perennial Height 50/90 cm Width 30-60 cm Spacing 30-40 cm / 10-12 pc/m2 Flowering time VI-VIII Site sunny to half-shaded, dry to medium moist humus rich soil