Calamagrostis 'Karl Foerster'
(Karl Foerster feather reed grass)
This versatile ornamental grass has slender, upright, deep-green foliage. A cool season grass, it is upright and clump forming, with purplish-green, feathery plumes that can reach 6 feet in height. It blooms in early summer rather than fall and must have winter chill to bloom.
Information provided by Santa Rosa Gardens.