The dark green, heavily savoyed (i.e. wrinkled) leaves grow atop thick bunches of pale green petioles giving it a spinach-like appearance. In summer, the plant reaches nearly a foot in height. In winter, it grows in a rosette close to the ground. As with Tatsoi, individual leaves can be picked continuously for several weeks. Heat and cold tolerant. Excellent for microgreens and baby leaf production. Cool season annual Maturity: Approx. 45 days (20 days for baby leaf) Planting season: Early spring, Late summer/early fall In southern states, Tatsoi can survive winter months tolerating hard frosts, without needing any protections.