I accidentally SOLD my Treasure Grove sapling

[Annie Ushi]

So uh.... how do I get another one??

[Eve]

Gino chests, I forget what they're called. Good source of saplings.

[SandrocK]

beat up mimics in Ginormosia, 100% drop rate iirc

[jdulzo]

Can buy them from some merchants in Gino as well, so no worries they are not rare.