Breaking
Potato sprouts can be broken instantly using anything, including the player's fist, and always drop themselves as an item.
Natural generation
Potato sprouts generate commonly on the surface of a corruption biome in the Potato dimension.
Post-generation
When potato leaves decay, or are broken by any tool except Minecraft:shears, they have a 5% chance of dropping potato sprouts. The Fortune enchantment increases the rate to 6.25% at level I, 8.33% at level II, and 10% at level III.
If placed on peelgrass blocks or corrupted peelgrass blocks, potato sprouts can grow into potato trees. Potato sprouts function similarly to Nether fungi: they don't grow into trees on their own, bone meal must be applied.
Potato sprouts are randomly offset based on the coordinates of the block they are placed on, which can be used to create unusual hitbox patterns.