“Aji” is a cultural and regional term used across South America — especially Peru, Bolivia, and Colombia — to describe a wide range of chili peppers. It is not a botanical designation. While aji is most closely associated with Capsicum baccatum, the term spans at least five species. This article maps that taxonomic diversity and explains what it means for growers and buyers.

Quick Reference

  • “Aji” is a cultural term, not a species designation
  • Primarily associated with C. baccatum, but spans five species
  • Includes types from C. chinense, C. frutescens, C. annuum, and C. pubescens
  • Flavor and heat vary dramatically by species — verify species when sourcing seeds

Aji Peppers by Species

Capsicum baccatum

This is the species most commonly associated with “aji.” Native to the Andean regions, baccatum varieties feature distinctive floral markings and are typically fruity, aromatic, and moderately hot.

  • Aji Amarillo
  • Aji Cristal
  • Aji Lemon Drop (Kellu Uchu)
  • Aji Fantasy
  • Aji Oro

Capsicum chinense

C. chinense varieties called “aji” tend to be hotter with a more pungent aroma. Less common in traditional South American cuisine, but present in some regional traditions.

  • Aji Charapita
  • Aji Panca (dried; sometimes confused with C. baccatum)
  • Aji Dulce (sweet, non-pungent; common in Caribbean cuisine)

Capsicum frutescens

C. frutescens types are rarely called “aji” in formal naming, but in vernacular use — particularly in Afro-Caribbean and Amazonian regions — the term is loosely applied.

  • Aji Guaguao

Capsicum annuum

C. annuum is the most widely cultivated species globally. Some regional varieties are called “aji,” particularly in Colombia, Ecuador, and Central America.

  • Aji Rojo
  • Aji Caribe

Capsicum pubescens

Known for its black seeds and hairy leaves, C. pubescens is not typically called “aji,” but some Andean communities use the term informally for rocoto types.

  • Aji Rocoto (“aji” used colloquially; rocoto is the standard name)

Grower’s Takeaway

  • Don’t assume all aji peppers are C. baccatum — verify the species before growing
  • Flavor and heat profiles vary dramatically across aji-named species
  • Aji Amarillo, Aji Lemon Drop, and Aji Cristal are the most reliable baccatum types for growers new to the group
  • Aji Charapita is C. chinense — expect chinense germination times and heat requirements
  • The term is cultural: use species name for any breeding, crossing, or seed banking work

Sources & Further Reading

  • Priest, C.T., and D.J. Austin. The Chile Pepper Almanac. Harambe Publishing, 2026. Amazon