This prolific plant produces lots of medium-hot, 6-inch peppers even in hot weather. Fruits ripen from pale yellow to orange to red, growing hotter the longer they’re on the plant. Use for roasting, pickling, frying, or to add a bit of spice to a stir-fry. These peppers look just like Sweet Banana Peppers, so use plant markers if you’re growing both so you can tell the plants apart. Scoville heat units: 5,000 to 10,000.