Plant Profile: Spartina pectinata

Spartina pectinata, commonly known as Prairie Cord Grass, is a robust, perennial grass that thrives in warm seasons. It features a growth pattern that is as broad as it is tall, typically forming dense, arching clumps that reach heights of 4 to 7 feet during flowering. This species is predominantly found in freshwater marshes, swampy valleys, the edges of ponds, and low-lying areas along roads and railways, as well as in both wet and dry prairie regions. Recognized as one of the tallest grasses in the United States, it likely inspired the accounts of early Midwestern settlers who described grass towering above a horse's back. The dark green, glossy leaves possess sharp edges, necessitating the use of gloves for safe handling. Due to these sharp leaves, it is sometimes referred to as "ripgut." The seeds have a tendency to attach to the fur of animals or the clothing of people, facilitating their dispersal to new areas.

Prairie Cord Grass flourishes in fertile, moist to wet loamy soils and prefers full sun to partial shade, although it can adapt to sandy or rocky soils if sufficient moisture is available. While it can endure some dry conditions, its growth tends to be less vigorous in such environments. This grass is somewhat aggressive in its spread but does not fare well with regular mowing. The florets are self-incompatible and may face significant insect predation, making the collection of viable seeds challenging. However, new plants can be propagated by dividing the rhizomes, which can naturally spread to create extensive colonies. Most of its growth occurs during the summer months, and it is particularly effective in preventing erosion on slopes and along waterways.

In terms of pests and diseases, Prairie Cord Grass can be invasive due to its aggressive spreading nature. Additionally, the larvae of various moth species are known to feed on this grass.