First Quality Native Grass Seeds – Current Lab Test Data Shown on Packet Exclusive Gold Vault Packaging – Provides 3X Longer Storage than Paper or Plastic with Triple Layer Mylar Gold Foil. Resealable/Reusable Zipper Bag – Perfect for Storing Excess Seeds Bulk Seed is Excellent for Immediate Planting or for Long Term Storage as an Emergency Seed Vault Detailed Planting Instructions on Back – Online Info also available via QR Code This warm-season perennial is probably the most popular native grass for short prairies. It is known as Bluestem because of the characteristic blue-purple stems at the base of the plant. These stems change into a bright copper color in the fall and persist as a food source for birds through the winter.