“The cornucopia (Latin: Cornu Copiae) is a symbol of food and abundance dating back to the 5th Century BCE, also referred to as Horn of Plenty, Horn of Amalthea, and harvest cone”

“The forbidding side of Hades was natuarally emphasized, but it was not the only one. As Pluto, the giver of wealth, he was sometimes shown in a more favourable light to signify that things – food and corn – come from the lowest depths of the earth and the bottom of the earth contains trasures as well as the souls of the dead.”

Additionally, for anything new to be created, something old has to die – this is also the meaning of the Crucifixion and resurrection of Jesus of Nazareth. So a god of death is key – death must precede new growth, that is, to fertilize or create the new (abundance or wealth, nicely symbolized as a cornucopia), something has to die (such as thoughts of despair, the idea that one cannot become wealthy, low self-esteem, hidden prejudices against making money, etc). Cool stuff, and very real! Pluto’s principal attribute is the cornucopia and, in artifacts, Hades sometimes takes over Pluto’s horn of plenty (the cornucopia). Heraclitus, an early Greek philosopher and scholar, said Pluto and Hades were actually the same god.

So the horn of plenty, or cornucopia, indicates that Hades, too, is associated with the fertility of the earth.

wikipedia.org

and type hades

see what comes out