Planter Boxes are a special type of Clay Pot sold by the Dryad for 1  SilverCoin Small, but with a few key differences. They do not require blocks below them to support them, and they also act as Platforms. Although each Planter Box has different seed names, any herb seeds can grow in them.

Depending on what your world is, the Dryad will sell either a Deathweed Planter Box with Corruption grass, or a box with Crimson grass.