Outsidepride Astragalus Membranaceus Milk Vetch Medicinal Herb Plant Seed - 100 Seeds Astragalus membranaceus herb plant grows as a hardy perennial in USDA Zones: 5 - 9 and thrives in full sun to partial shade areas. Astragalus, also known as Milk Vetch or Chinese Milk Vetch is considered a legume and has many medicinal properties. This plant has yellow blooms from early summer to late summer and reaches a height of 48 inches. Sow these easy to grow heirloom seeds at 2 - 3 seeds per plant - scarify seeds before you plant them. Keep seeds moist until germination occurs in 7 - 30 days. Our seeds are always Non-GMO and packaged for the current year.