90 Days to maturity (from transplant). Capsicum annuum. Pepper, Hot - Cowhorn Hot Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, hot-type pepper with medium heat levels. 2,500 to 5,000 Scoville Heat Units. Suitable for growing in garden plots, raised beds, and greenhouses. Named after its shape, Cowhorn is a thick-walled cayenne pepper. Approximately 5,000 seeds/ounce.