Square Stem Bulrush

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Square Stem Bulrush - Scirpus Pungens

Square Stem Bulrush grows in colonies of and averages about 4 feet in height when they are mature. These grass-like blades grow up to eight inches long with a deep crease in the center. There are three varieties of Bulrush in the Northern Americas. The Square Stem Bulrush is easily identified by the sharp edges of the triangular stem. Square Stem Bulrush is green and blooms from June through September. Small buds appear on the stems with yellow or brownish colored scales covering them. As they mature they turn from a dull gray color to black. It survives best in full sun exposure. Thriving best in USDA zones 2-9.

Square Stem Bulrush can survive in a few feet of standing fresh water and is an excellent choice for planting in naturally occurring wetlands. It is typically found along a lake, river shores, and marshes. The Square Stem Bulrush can be used to help prevent soil erosion. It thrives best when planted in wet soil that is clay, loam, peat or sand. It grows naturally in most wetland areas of the United States.

Square Stem Bulrush can be easily cultivated by transporting rhizomes and seeds onto moist soils that occasionally dry during the winter or in shallow wetlands. The Square Stem Bulrush can be invasive invaders of ponds and is hard to control once it takes root. So careful placement during cultivation is recommended.

Various birds and ducks often eat the seeds of the Square Stem Bulrush. Muskrats, wild geese, and nutria all like to munch on the rhizomes and early shoots of the plant. It also makes excellent cover for wetland inhabitants.

Companion Plant Recommendations: Suggestions for pairing with the Square Stem Bulrush. Carex comosa, Carex vulpinoidea, Iris versicolor, Mimulus ringens, Verbena hastata or Juncus effusus.