Members of the Eriophorum plant genus are oriental grasses. They can reach from 30 to 90 cm (one to three feet) in height.
They are hardy perennials that bloomm in the Summer.
Eriophorum spissum - Tussock cottongrass by peupleloup.
They have long lasting flowers of cottony white. Hence the common name for Eriophorum of Cotton grass.
Cottongrass by Leo-setä.
They prefer moist conditions, so are great to grow next to water features or in boggy parts of the garden.
Common Names: Cottongrass, Cotton Sedge, Cotton Grass.
Life Cycle: Hardy perennial
Height: 12 to 36 inches (30 to 90 cm).
Native: Northern America, Europe, Asia.
It is best to grow Cotton grass from seeds in their final location. Simply sow the seeds (in triplicate) on the surface at about 40 cm (16 inches) apart. Thin out if necessary.
Cotton grass likes to grow in moist acidic soil. It is best to plant Eriophorum species in the first couple of months of spring. This should produce flowers in the summer.
The Cotton grass seeds will take about three weeks to germinate, once the temperature has reached about 15 degrees Centigrade (59°F).
They can be grown in either sunny or shady conditions. Cotton grass is fairly easy to maintain.
It is important to keep the soil very moist, and the Eriophorum plant should be cut back at the beginning of spring.