Introduced, Growth Habit: Slightly rhizomatous, Mature Height: 24” + tall, Water Requirement: 11” and higher or Irrigation, Seeds per lb: 90,000, Seeding Rate: 8 to 12 lbs dryland or 15 to 20 lbs irrigated. Pubescent wheatgrass and intermediate wheatgrass are now classified as one species. The main difference between the two is that pubescent wheatgrasses have fine hairs covering the seedhead spike and leaves and are slightly more drought tolerant than intermediate wheatgrasses.