Sometimes dismissed as a prickly weed, Milk Thistle is valued by many for its medicinal properties. Also known as Scotch Thistle, this hardy heirloom can grow to 7 tall. Lovely lavender flowers bloom spring through summer. 50 seeds minimum Germination: 21-28 days Bloom time: summer Plant deep in full sun after frost danger has passed. Space plants 24-36 apart.