Sedges Have Edges: A Common Wetland Plant

When Point Blue biologists perform wetland delineations, one characteristic we typically search for when identifying the presence and boundary of a wetland is wetland vegetation: plants that like to grow in wet areas.  A particularly common plant we often find in our local wetlands is the sedge.  Let’s take a closer look.

Sedges (Scientific Latin name Cyperaceae) are a family of grass-like plants whose members often, though not always, thrive in wetlands or poor soils.  The most reliable way to discern a sedge from other types of lanky, long-leafed plants is to feel the stem carefully, near or at the soil line.  A catchy memory device says that “sedges have edges.” This refers to sedges’ triangular stems, with three equal sides and angles.  Sedges also have three overlapping layers of leaves that all begin at the base of the plant (though this can be difficult to see).  Unlike grasses, you won’t find any leaves that begin further up the stems of sedges.

When outdoors, in many cases, our local sedges can be spotted from a distance based on their tendency to grow in clusters in wet areas, to have coarser blades than grass, and to have large, unusually-shaped seedheads.

Three-sided stem and three layers of leaves, seen on Tall sedge

(Carex appressa). Photo by John Tann licensed under CC BY 2.0.

If you notice sedges on a property you’re seeking to purchase, or on a property you already own and would like to update, regulated wetlands might be present.  Point Blue is well-versed in navigating applicable wetland regulations to help clients achieve development goals while also conserving the natural resources.  During the growing season (approximately April to October), Point Blue biologists are eager to provide our professional opinion on where wetlands are located.