Miscanthus giganteus Miscanthus x giganteus, a perennial rhizomatous grass, is a lignocellulosic feedstock originating from Asia. After establishment from the third season onwards, this sterile, thus noninvasive hybrid grows to heights of up to 4 metres per season. Miscanthus receives little or no cultivation in its 20+ year life span. Its root structure stabilises and helps improve soil quality, as well as slowing flooding, thereby preventing soil and nutrient run-off into water courses. Harvest in late winter or early spring and increased soil carbon and organic matter and ample leaf litter are considered favourable to biodiversity. Due to its suitability to a wide range of climatic and soil conditions the average fresh mass yield is a generous 8 - 20 metric tons per hectare per year depending on climatic conditions.