You need a wide, shallow pot with drainage holes—ginger hates wet feet almost as much as my neighbour hates my lawnmower. Fill it with rich, loose compost mixed with a bit of sand. Plant your ginger chunk just below the surface, eye pointing up, and water it lightly.
Here’s the hilarious truth: ginger grows sideways, not downwards. It’s a rhizome, which means it’s basically a subterranean potato that thinks it’s a starfish. So don’t bury it deep; it wants to spread out like a lazy cat on a radiator.
Growing Ginger in the UK Garden: A Complete Guide