Moss Carpet is a one-pixel decorative block from Minecraft 1.17 that covers any solid surface with bright green moss.
Guide
Collect at least 3 Moss Blocks from lush caves, wandering trader trades, or by trading sniffer-found seeds; any hand or tool breaks Moss Block instantly.
Place a crafting table and right-click to open the 3x3 grid; you cannot craft Moss Carpet in the inventory 2x2 grid because the recipe needs three slots in a row.
Fill any one horizontal row of the crafting grid with 3 Moss Blocks; the result slot shows 3 Moss Carpets per craft.
Right-click any solid block top to place Moss Carpet; it sits one pixel high, has no collision change, and snaps onto stairs, slabs, and full blocks alike.
Use bone meal on a placed Moss Block to grow Moss Carpet, azalea, and grass on nearby blocks for free, expanding green coverage without crafting more.
Moss Carpet is flammable from open fire but resists lava ignition; keep torches a few blocks away from large mossy floors.
Place 3 Moss Blocks in any horizontal row of the 3x3 crafting grid. The recipe outputs 3 Moss Carpets per craft.
Moss Carpet generates on the floor of lush caves biomes, often beneath azalea trees and dripleaf. It does not generate in any other biome.
Mojang added Moss Carpet in Minecraft 1.17, the Caves & Cliffs Part I update, on both Java Edition and Bedrock Edition.
Moss Block is a full cube that can be bone-mealed to spread vegetation, while Moss Carpet is a one-pixel decorative cover that sits on top of any solid block.
Moss Carpet burns when ignited by fire or flint and steel, but it does not catch fire from adjacent lava sources.
Yes, Moss Carpet is compostable with about a 30 percent chance to raise the compost level by one when placed in a composter.