Calamagrostis x acutiflora ‘Karl Foerster’

('Karl Foerster' feather reed grass)


Hardiness Zones:

 4a  4b  5a  5b  6a  6b  7a  7b  8a  8b  9a  9b

Quick Overview:

‘Karl Foerster’ is a hybrid (C. arundinacea x C. epigejos) feather reed grass cultivar which is valued for its early bloom, vertical lines and ability to grow in wet soils. It is a slowly-spreading, clump-forming, cool season ornamental grass which features an erect, slightly arching, slender clump of narrow, stiff, rich green leaves growing to 3′ tall and 2′ wide. Leaves produce little fall color, eventually turning tan in winter. In June, tightly-vertical flower stalks rise well above the foliage to 6′ tall bearing narrow plumes of feathery, purplish-green flowers which turn golden as the seeds mature in summer and eventually tan.

Out of stock


Does well in heavy clay soils, unlike many of the other ornamental grasses. Prefers moist, rich soils which do not dry out. Blooms in light shade, and appreciates some light afternoon shade in hot summer climates. Since this hybrid is sterile, there is virtually no chance of its escaping and becoming a scourge on the landscape.

Additional information

Common Name

'Karl Foerster' feather reed grass

Botanical Name

Calamagrostis acutiflora 'Karl Foerster'


1 gallon

Evergreen or Deciduous


Hardiness Zone

4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b

Growth Rate


Light Requirements

Part-shade, Part-sun, Sun


3 to 5 ft.


1.5 to 2.5 ft.

Soil Condition

Average to Wet Soils

Water Needs

Average to wet

Blooming Period

May to February

Flower Color

light pink/white



Foliage Color


Deer Resistant


Pin It on Pinterest