Content Detail

Siberian frost grass is a warm-season, clump-forming grass with a neat, upright to rounded form. It grows up to four feet tall and has erect flower clusters in mid- to late summer.

  • Family (English) Grass
  • Family (botanic) Poaceae
  • Tree or plant type Grass, Perennial
  • Native locale Non-native
  • Size range Large plant (more than 24 inches)
  • Light exposure Full sun (6 hrs direct light daily), Partial sun / shade (4-6 hrs light daily)
  • Hardiness zones Zone 4, Zone 5 (Chicago), Zone 6, Zone 7, Zone 8
  • Soil preference Moist, well-drained soil
  • Season of interest early fall, early spring, early summer, early winter, late fall, late summer, late winter, mid fall, midsummer, midwinter
  • Flower color and fragrance Purple
  • Shape or form Round, Upright

Size and Form: 

Siberian frost grass is a warm-season, clump-forming grass with a neat, upright to rounded form.  It grows up to four feet tall

Native geographic location and habitat: 

Native to Japan, China and Korea. 

Leaf description: 

The leaves are different from most grasses, having a more bamboo-like appearance. The bright green leaves are up to 1 inch wide and 8 inches long and are covered with fine hairs. Late in the season, the foliage will pick up burgundy tints. Winter color is brownish with purple tints.

Flower description: 

Flowering occurs in mid- to late summer. The tiny, purplish or brownish flowers occur in erect, airy clusters. The flowers are wind pollinated.

Fruit description: 

The small fruit (caryopsis or grains) form along the erect clusters that held the flowers.

Plant care:

Best growth occurs in full sun to light shade, with a moist, well-drained soil. This grass will grow poorly in hot, dry situations. Too much shade will produce floppy growth. This is a warm season grass, so its most active growth occurs in summer.  It will remain standing in winter and can act as winter interest. Since this grass remains attractive through winter, it should not be cut back until early spring, before new growth begins. At that time, it can be cut down to the ground.

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