Teff grass is a warm season grass capable producing fantastic quality hay. The only thing restricting it, is its ability to get established. Since it is so fine seeded, 1.3 million seeds/lb, its been difficult to get seeded at a proper depth to give it a chance at competing. If seeded as a monoculture, its been documented as having yields comparable to that of Timothy grass. There aren’t any issues with teff grass having prussic acid or nitrate issues.