72 Days to maturity (from transplant). Solanum lycopersicum. Sunset’s Red Horizon Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Also known as Red Horizon. An heirloom beefsteak-type tomato native to southern Russia. Produces 4 to 6-inch fruits. An indeterminate that produces up until the first frost of autumn. Approximately 6,800 seeds/ounce.