Serrano is a hot chile that originated in the mountainous regions of the Mexican states of Puebla and Hidalgo. The pods measure between 2 and 2.5 inches long by 0.375 to 0.5 inches wide. The medium thick flesh pods turn from green to red as they mature and can be eaten at any stage of maturity. The plant grows between 18 and 24 inches tall. Serrano peppers prefer the soil pH between 7.0 and 8.5 and do best in temperatures above 75F. Serrano peppers are hotter than the jalapeo pepper, and they are typically eaten raw. Culinary uses include making fresh salsa and pico de gallo.