75 Days to maturity (from transplant). Capsicum annuum. Diamond Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, sweet pepper with no heat. 0 Scoville Heat Units. Suitable for growing in garden plots, raised beds, and greenhouses. The fruit matures from a white to pale yellow, then a scarlet red. Grow this thick-fleshed, sweet bell pepper for a delicious treat. Diamond Peppers are medium-sized bell peppers. ~5,000 seeds/oz.