Hot Chili Pepper Cow Horn Seeds 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. Cowhorn pepper fast facts. Scoville heat units (SHU): 2,500 – 5,000 SHU. Median heat: 3,750 SHU. Origin: South America. Capsicum species: Annuum. Jalapeño reference scale: Near equal heat. Use: Culinary. Size: Approximately 8 to 10 inches long, curved. Flavor: Sweet. How big does a cowhorn pepper get? The cowhorn pepper (a.k.a cow horn or cow-horn) is truly one of the largest chilies around. 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. Cow Horn Hot Pepper Seeds Heirloom NON-GMO Spicy, 10" Long, Productive, 75 days. SOIL temperature MUST be kept at 75-90F for proper germination!!! Cow Horn Pepper Seeds Non-GMO - Supper hot Chilli Pepper Seeds