Calamagrostis × acutiflora ‘Avalanche’
Feather reed grass
Feather reed grass is a group of cultivated grasses valued as ornamental plants in landscape plantings. This is a cross of Calamagrostis arundinacea and C. epigejos. It is rarely found in nature.
Plants: This grass grows in clusters 1½–3′ (45–91 cm) high and ~1′ (30–36 cm) around. The foliage reaches about halfway up the cluster; the rest is feathery flowerheads on long stalks.
Leaves: Variegated (green, with a white stripe down the middle of each leaf), in dense, erect clumps of narrow, flattened leaves.
Flowers: Light green at first, becoming pink-purple. Flower stems reach up to 5′ (1.5 m). They appear from June to February, starting earlier than some other cultivars.
Fruits: Gold-colored seeds fade to tan.
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Some cultivars. |
Online References:
Ucanr.edu (Calamagrostis×acutiflora)
9/7/2010 · New England Botanic Garden at Tower Hill, Boylston, Massachusetts · ≈ 4½ × 7″ (11 × 17 cm) 
9/7/2010 · New England Botanic Garden at Tower Hill, Boylston, Massachusetts 
9/7/2010 · New England Botanic Garden at Tower Hill, Boylston, Massachusetts 
| Kingdom | Plantae | Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin) |
| Subkingdom | Tracheobionta | Vascular plants—plants with a “circulatory system” for delivering water and nutrients |
| Division | Magnoliophyta | Flowering plants, also known as angiosperms |
| Class | Liliopsida | Monocots (plants with a single seed leaf); includes the lily family |
| Subclass | Commelinidae | Dayflowers and spiderworts, and several others |
| Order | Cyperales | Flowering plants including grasses |
| Family | Poaceae | Grasses (but not sedges or rushes) |
| Genus | Calamagrostis | From the Greek kalamos, “a reed or stalk,” and agrostis, “grass or weed,” |
| Species | acutiflora |
Calamagrostis × acutiflora ‘Avalanche’ description by Thomas H. Kent, not updated.
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