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Cotton Grass Eriophorum angustifolium, zone 4
Cotton Grass Eriophorum angustifolium, zone 4
Cotton Grass Eriophorum angustifolium, zone 4

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Product Code: 1SMERIOAN-P


Cotton Grass Eriophorum angustifolium, zone 4


The plant grows in its native areas (northern tier of U.S. and Siberia) in wet areas such as marshlands, boggy areas, and in very shallow waters, including wet ditches. It can also grow in predominantly wet soil adjacent to ponds and rivers. It prefers an acidic pH soil, likes peat but also grows in sandy or clay soil and in sun to partial shade.

The plant can be grown in pots or garden water features in about 2 to 3 inches of standing water. This sedge plant is usually about 12 inches tall though it can grow up to 2 to 3 feet.

To avoid the plant spreading, the seeds must be removed before maturity when wind spreads them, and the plant roots divided every two years or so.

Cottongrasses are self-pollinating because the flowers are "perfect", meaning each contains both male (stamen) and female (carpel) reproductive) parts.

Extensive patches of erect stems with grass-like leaves, topped by 2-8 white, cottony heads in a cluster.

The name comes from the Greek erion ("wool") and phoros ("bearing"). The slender bristles of "cotton" are actually modified sepals and petals of minute flowers. There are several similar species.
  • Duration: Perennial
  • Leaf: Green
  • Flower: White
  • Size Class: 1-3 ft.
  • Zone 4.