Switchgrass is a widespread, tall, warm-season grass with high wildlife value as well as ornamental and soil-stabilization value. Grows 4-6 feet tall. Flowers midsummer from July-August). Seeds are favored by many overwintering birds. Roots can be very deep, up to 10 feet or more and so makes an excellent solution for erodible soils such as steep embankments and streamsides. Foliage is a pleasant yellow-orange in the autumn. Forms clumps but can spread aggressively by seed. Full sun to part shade and any soil type is tolerated. Zone 4-9. VA ecotype. // Seed packet, about 50 seeds. Germination requirements: none. Seeds germinate within two weeks of sowing.