80 Days to maturity (from transplant). Solanum lycopersicum. Mandarin Cross Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, salad tomato. Suitable for growing in garden plots, raised beds, and greenhouses. The fruits are crack-resistant and have thick, sweet, tasty flesh that melts in your mouth. Mandarin Cross flesh is also firm, making them a good slicing fruit. The plant produces rich orange-colored fruit that resembles a mandarin. ~ 6,800 seeds/ounce.