VEGETABLES / MUSTARD-GREENS AKA mustard spinach. 35 day. Very early, mild-tasting greens from this spinach and mustard cross. Semi-erect 18" long oblong, smooth, dark green leaves. Tolerates both heat and cold. $3 Add To Basket Listed In: 2023, 2024, 2025 Montana USDA Hardiness: 3 View Profile & Listings