Variegated Bulbous Oat Grass

Background

• Bulbous oat grass is native to Europe, in the Mediterranean region. Although there are six native species, only the variegated form is sold as an ornamental. The grass gets its name from a mistaken classification by Linnaeus, who placed it with true oats in the genus Avena. The name stuck. It grows along streams, in meadows and in woodlands.

Characteristics

• Variegated bulbous oat grass (Arrhenatherum variegata) has delicate white and blue-green striped foliage that grows about 2 feet tall. It needs regular moisture and, as a cool-climate grass, goes dormant in summer in hot climates. It multiplies by seed blown from its airy, wheat-colored plumes, as well as by its bulbs. It is hardy to minus 24 degrees Fahrenheit.

Culture

• Bulbous oat grass grows best part sun, with protection from hot afternoon sun and heat. It prefers well-drained soil with a neutral to acid pH but will tolerate less than ideal conditions. Water regularly. If grown in full sun, it may brown during the heat of summer but can be cut back to the base and watered thoroughly to stimulate regrowth. To propagate, divide the clumps of bulbs in spring or fall.

Uses

• As a soft, small-scale ornamental grass with light, airy foliage, variegated bulbous oat grass works well in alpine gardens, rockeries and cool-season borders. It makes a pretty companion plant for small spring flower bulbs and acts as a foil for perennials and annuals with blue, purple and lavender blooms, such as bachelor buttons, violets, asters, veronica and catmint, or mixed with larger, green grasses.