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Physical description: This plant is an ornamental grass and forms small
colonies. The sharply pointed grassy leaves may reach 12 to 18
in. long and ¼ in. wide. The most striking feature about
the leaves is their exceptional color: they turn a bright red
in early summer and remain so until autumn. This is unique in
the world of ornamental grasses. Flowers clusters appear in late
summer; they may reach 4 ½ to 9 in. tall and have a silvery
white color. No fruit is produced. One caution about this plant:
All the all-green mutations, which may occur in this species,
have to be destroyed because they can become a hazard by producing
seeds. This plant should be used with caution because of its
potential to become invasive and displace native plants, especially
in disturbed habitats.
Optimal growing conditions: Japanese blood grass is soil-tolerant but performs
best in a moist well-drained soil. Acidic and organically rich
soils are preferable, and the plant does well in full sun, although
slight shade is tolerated. The rate of growth is slow, and an
occasional watering during the summer may be very useful. Winter
hardiness: Zones 5-10.
Susceptibility to pests and diseases: Japanese blood grass has no disease problems,
but slugs may cause some damage to the leaves.
Use:
The exceptionally attractive effect of the leaves may be appreciated
in many locations, especially exposed sites. The fibrous roots
of the plant can control erosion, too. The main problem of this
species is its slow establishment and its potential for invasiveness.
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