Frank's Sedge is a native Missouri wetland grass that thrives where most ornamentals struggle, transforming soggy soil into lush green cover. This sedge grows 12 to 24 inches tall and wide, with fine, grass-like leaves that reach up to one-third inch wide and 2 feet in height. Hardy in zones 5 through 8, it flourishes in full sun to partial shade and tolerates the wet conditions that challenge conventional landscaping. Its thimble-shaped seed heads form from May through September, attracting waterfowl and adding subtle texture to rain gardens and riparian edges.
Partial Sun
Moderate
5-8
24in H x 24in W
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Moderate
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Frank's Sedge grows abundantly in wet locations across Missouri, from swamps and wet meadows to the margins of streams, lakes, and ponds where it prevents erosion while asking little in return. The sharp edges of its stems and leaves (the Latin name Carex literally means 'cutter') give it character; unlike round-stemmed rushes, sedges have the telltale angular edges that define the Cyperaceae family. Waterfowl eat the seeds, making this sedge a functional choice for wildlife-focused restoration. Its low maintenance nature and deer resistance mean once established, it needs almost no intervention to thrive.
Frank's Sedge serves as a foundation plant for rain gardens, constructed wetlands, and riparian restoration projects where its erosion control and water tolerance provide both ecological and landscape function. It stabilizes wet banks and muddy margins while providing food and cover for waterfowl and other wetland wildlife. In residential settings, gardeners use it to reclaim boggy patches and poorly drained areas that would otherwise remain bare or require constant intervention.
No timeline data available yet for this variety.
Transplant established sedge starts into wet, poorly drained soil in spring or early fall. Space plants 12 to 24 inches apart, matching the mature spread. Work it directly into boggy ground without extensive soil preparation; it thrives in clay-heavy, waterlogged earth.
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“Frank's Sedge is native to Missouri and the broader eastern and central United States, where it has grown for centuries in wetland ecosystems. It thrives so abundantly in wet prairies, swamps, and riparian zones that it has become a standard bearer for native wetland restoration. The genus Carex, with its distinctive sharp-edged stems, has been recognized since classical Latin as the 'cutter,' a name that references the plant's edge-bearing physiology that distinguishes it from related aquatic grasses.”