Catnip

Catnip grows wild on grass in plains, sunflower plains, meadows, forests, flower forests, birch forests and cherry groves. A patch turns up in about one chunk out of 24, and its bushes are already fully grown.

Growing your own

Use the item on grass or dirt to plant a bush. It has four growth stages and needs a light level of 9 or more above it. It grows a little slower than sweet berries. Bone meal always adds one stage.

Right-click a fully grown bush to pick 1 to 3 catnip. The bush stays and drops back to the second stage. Breaking a bush gives 1 catnip, plus 1 or 2 more if it was fully grown.

Eating it

Catnip is eaten in 0.8 seconds, even on a full hunger bar. It restores 1 hunger point and gives two effects for 30 seconds: Haste and Catnip, which pushes you around at random.

Every cat and ocelot within 12 blocks gets the zoomies for 10 seconds.

Eat another one while the effect is still on and you get the advancement Catnip Overdose.

Other uses

Catnip, wheat and sugar make four Catnip Cookies. In the Full Neko set one catnip buys your stolen item back from a Bakeneko.