This means the player has either an option of several small lots for fast but small yields or one to two lots spaced very far apart (12 in a 57 tile range or 24 blocks in a 38 tile range) for slow but maximum yields. *Chlorophyte Ore has a spread limit, which depends on the depth, i.e at underground or cavern depth. *Chlorophyte Ore does not need light (natural or not) to grow, although torches and such may be useful for artificial farms, just for convenience/'i can't see shit in here' sake. *Chlorophyte Ore will grow at underground depth and below, but will grow much more at cavern depth and below, even all the way below to the underworld. *Chlorophyte Ore will only naturally seed in hardmode Underground Jungles (artificial or naturally generated, it does not matter) but it can be seeded anywhere underground, as long as the basic conditions are met. Some help would be needed, so input if you like!

I'm thinking of writing a chlorophyte farming guide on the official wiki, but want to double-check with what I know about the confirmed known growth mechanics before I write the first draft.

Chlorophyte terraria