60 to 70 days to maturity. Perilla frutescens var crispa. Shiso Herb Seeds (Perilla) - Green Ohba Shiso Seeds. Warm season annual. Shiso, also known as perilla or beefsteak leaf, is an herb often used in traditional Japanese cooking. This Ohba variety has broad, flat leaves and lacks the red undersides that some other shiso varieties have. It is nutritious and often used in Eastern medicine. Full of bright flavor and incredibly versatile, Green Ohba is a great addition to your vegetable or herb garden! ~ 16,800 seeds / oz.