Hot Chili Pepper Cow Horn Seeds Non-GMO , Gluten Free , Vegetable Garden Seeds Cowhorn peppers are long, fairly thick-walled chili peppers that are shaped a bit like cow horns, hence the name. They are very large peppers in general, growing up to ten inches The first peppers should be ready to pick just 10-12 weeks after transplanting. Harvesting the fruit as it matures encourages the plant to continue producing. Cowhorn pepper seeds - Hot Chili Pepper Cow Horn pepper seeds non-GMO - supper hot chilli pepper. The Cowhorn pepper ranges from 2,500 to 5,000 Scoville Heat Units (SHU). The thick walls and sweet mild heat makes the Cowhorn pepper. The Cow Horn Peppers' thick walls make this phenomenal for making sauces and drying to turn into pepper flakes. We recommend cooking with this pepper. The Cow Horn pepper is truly one of the largest chilies around with medium heat. They are perfect for making hot sauce and dry pepper flakes.