Mangrove Propagule is the sapling form of the mangrove tree, added to Minecraft in the 1.19 Wild Update on June 7, 2022. Mangrove Propagule generates hanging beneath mangrove leaves in the Mangrove Swamp biome, passing through four hanging growth stages before it can be harvested by hand or with shears. Unlike every other sapling in Minecraft, Mangrove Propagule can be planted directly in water up to one block deep, as well as on dirt, grass, podzol, coarse dirt, mycelium, mud, muddy mangrove roots, moss block, rooted dirt, and clay. Mangrove Propagule requires a light level of 9 or higher to grow, and bonemeal accelerates the process at the standard 45% chance per use.

Mangrove Propagule grows into a full mangrove tree that yields mangrove logs, mangrove leaves, mangrove roots, and muddy mangrove roots when planted on mud. Builders use Mangrove Propagule to seed swamp themed bases, amphibious villages, and waterline gardens that no other sapling can populate. Mangrove Propagule is available on both Java Edition and Bedrock Edition starting at version 1.19, the same update that introduced frogs and the warden, making this block the key to recreating the full mangrove ecosystem in survival worlds.