blue oatgrass
Helictotrichon sempervirens

Blue oatgrass forms attractive spiky, silver-gray clumps that contrast nicely with other colors in the garden. High heat and humidity are hard on this grass, and it may not be as attractive in the hottest part of Iowa’s summers.

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Blue oatgrass. Vander Veer Botanical Park, Davenport. 9 Sept 2003. Photo: Anna Gardner

Annual or perennial: perennial

Origin: Mediterranean

Height: foliage to 2 1/2’

Hardiness: zone 4

Habit: clumping

Moisture: well-drained, moist

Propagation: seed, division

Light: full sun

Flowering: June-July

Uses: specimen and small groupings

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Blue oatgrass. Reiman Gardens, Ames. 23 Sept 2003. Photo: Anna Gardner


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