The Prik Kee Noo Suan origins from Thailand, and is very popular there. It is also known as the Rats Turd Chili. Prik Kee Noo translates as "mouse poo chillies". The plant can grow to about 60 cm high, it often gives very good yields. The peppers ripen from green to orange to red, and are very spicy for their small size.