Botany

Botany is a custom enchantment that can be bought from Gardener shopkeepers. By breaking leaves and grass with a tool with this enchantment, you may find unindentified seeds. The cooldown for finding seeds goes down with each successive level of Botanist on a tool, and starts at around 5 minutes. After you've found 4 seeds, you can assemble them into a spawnable plant! These plants vary in appearance and use, from the small Phosfungus to the coveted Wishing Willow.

Basics
A planted seed begins life exhausted and fallow, during which time it is unable to provide additional effects. Exhausted plants eventually recover, but will remain fallow until a special substance called Vital Dew is applied. Vital Dew is obtained through either the application of Fertilizer (a combination of bonemeal, gunpowder, and rotten flesh), a Vital Dew Condenser, or from a Gardener Shopkeeper.

Plant Size
There are three tiers of plant size; small, medium, and large. Small plants require 1 Vital Dew to activate, medium plants require 2, and large plants require 3. Certain plants can be multiple sizes (such as the Phosfungus), but most are in one size category.