These chilies are beautiful giants, that’s for sure. They can grow from 6 to 9 inches in length. That’s cowhorn pepper territory. But unlike cowhorn chilies with their steep curves and skinny profile, the Beaver Dam looks more like a poblano or bell pepper, at least in the shoulders. It has a wide main cavity, then tapers down to a point. In colour, Beaver Dam peppers follow the same maturation pattern as most peppers. They change over time from a bright green to shades of red and orange in full maturity.