All AIS awards except ECs are based on voting by AIS judges on performance in the garden.
HC - Highly Commended - for a non-introduced seedling as judged in the garden and receiving five judged votes.
EC - Exhibition Certificate - awarded to the best seedling in an iris show or receiving five votes from judges present.
HM - Honorable Mention - award for an introduced variety, eligible the second year after its introduction.
AM - Award of Merit - required award for eligibility for all yearly awards (eligible second year after receiving HM)