Outsidepride Blessed Thistle Cnicus Benedictus Herb Seed - 200 Seeds Blessed Thistle plant grows as an annual in USDA Zones: 5 - 9 and thrives in a full sun garden. Cnicus Benedictus grows 20 - 24 inches tall and has yellow blooms from mid summer to early fall, the young leaves can be eaten, or dried to make teas. This medicinal herb has been used to treat numerous ailments and today it is used to promote milk production in lactating women. Sow these heirloom seeds at 1 - 2 seeds per plant in well-drained soil and keep moist until germination occurs in 14 - 21 days. Our seeds are always Non-GMO and packaged for the current year.