45 Days to maturity. Brassica juncea. Crimson Tide Mustard Seeds. Heirloom, Non-GMO, Open Pollinated. Annual. This mustard strongly resembles Ruby Streak. Its ornately fringed purple and green leaves deliver a peppery flavor that is milder than arugula and packed with nutrients. The thin green stalks are tasty as well, making this variety a perfect baby leaf salad green. Leaves become dark purple when growth temperatures are cool. Approx. 7,500 seeds / oz.