Identification
Common names: Tall Fescue, KY-31. Scientific name: Schedonorus arundinaceus. Family: Poaceae.
A cool-season perennial bunchgrass that grows in dense clumps. Leaves are dark green, ribbed on the upper surface, and have rough edges. The base of the leaf blade has small 'ears' (auricles) that are typically hairy. Seed heads are branched panicles.
Habitat and Range
Dominant in the 'transition zone' of the US (TN/KY). It is incredibly hardy, tolerant of poor drainage, drought, and heavy grazing.
Ecological Role
Provides significant soil stabilization and erosion control due to its massive, deep root system. However, it can be aggressive and displace native grass species in some environments.
Agricultural and Homestead Value
The primary forage grass for millions of cattle in the SE United States. It provides reliable grazing through much of the year, particularly in fall and winter (stockpiled fescue).
Toxicity and Animal Interaction
Toxicity level: Moderate (Endophyte-related). Many older stands contain an endophytic fungus (Epichloë coenophiala) that produces ergot alkaloids.
Animals affected or monitored: Cattle, horses (especially pregnant mares), sheep. Symptoms: Fescue foot (lameness), summer slump (heat intolerance), reproductive issues in mares (thickened placenta, lack of milk).
Veterinary Response Notes
For pregnant mares, remove from endophyte-infected fescue 60-90 days before foaling. For cattle, dilute with clover or use 'novel endophyte' or 'endophyte-free' varieties to mitigate fescue toxicosis.
Historical and Cultural Uses (Ethnobotanical Archive Context)
The 'Kentucky 31' variety, discovered in 1931, revolutionized Southern agriculture by providing a grass that could survive the region's harsh summers and wet winters.
Foraging and Cultivation Guidance
Best planted in fall. Management involves regular grazing or mowing to maintain quality. Not typically used for human consumption.
Known Chemistry and Safety Framing
Primary concern is ergovaline, a vasoconstrictor produced by the endophyte. Safe for livestock when managed properly or when using endophyte-free seed.
Codex Navigation
Categories: Forage, Grass, Pasture.
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