Miscanthus Anderss. Produces Viable Seed in Four USDA Hardiness Zones

Abstract

Forty-one taxa of Miscanthus grown in USDA Hardiness Zones 4, 5, 6, and 7 were examined in 1996 and 1997 for seed set and viability. Although laboratory results varied widely between years, climatic zones, and cultivars, many plants set viable seed. Eleven types had <18% viable seed, including ‘Morning Light’, ‘Variegatus’ and ‘Zebrinus’, and appear to represent the least risk for becoming invasive plants, especially in northern climates. Other characteristics of Miscanthus are discussed in terms of invasive potential in the United States.