UC 157 F2 Asparagus Garden Seeds - 2 g Packet ~60 Seeds - Asparagus officinalis Non-GMO - Hybrid - High Germination Rate Seeds For: Vegetable Gardening Days to Full Maturity: -- 2-3 Years -- Perennial -- USDA Hardiness Zone: 2-7 Mountain Valley Seed Company Brand - Premium Quality Seeds Non-GMO, Hybrid. Perennial. Developed by Frank Takatori and Frank Southers at the University of California at Riverside in 1978, this 2nd generation hybrid is still the most widely planted fresh market asparagus variety in the world. An excellent choice for home gardens, market growers, and open field production, it will produce heavy yields of dark green asparagus spears.