All I can think of that's different is spacing. Hot
peppers prefer to be crowded somewhat. Sweet need more room, in general, especially since many are larger
peppers like bells, but many
peppers don't fit precisely into a category...no real difference between hot bananas and sweet, or hot cherries and sweet, anaheims are classified as "hot," and I'm not sure about things like Pimientos.
It would be good to see what the definitions are, but they're mostly arbitrary.
