Sweet Heat Hot Pepper Seeds. Annual. Non-GMO. Open Pollinated. Capsicum annuum. 55-60 days. Technically considered a variety of hot pepper, the Sweet Heat pepper only registers around 300 Scoville Heat Units, about the same rating as a mild Sweet Banana pepper. Sweet Heat peppers produce 3-4 inch long peppers that change from green to red as they ripen that are ready to harvest in 55-60 days.