How to get a Lucky Clover in Terraria

Terraria 1.4.5 is here, and perhaps you've picked up a new Lucky Clover or two after the Bigger and Boulder update and have no idea what to do with it. Or maybe you're more like me and Lady Luck pays you no mind, so you're cloverless and confused. I get it.

As the resident homemaker of my friend group, I'm always back at the base managing NPCs, living arrangements, and our chaotic infrastructure. So when my friends returned with scads of 'magically delicious' greens and no idea where they picked them up...