The Mangrove tree in Minecraft can be grown by following these steps:
1. Gather Mangrove Propagules by breaking them from the branches of Mangrove trees.
2. Choose a planting location on either Mud Blocks or Grass Blocks, with Mud Blocks being preferred for optimal growth.
3. Plant the Mangrove Propagule on the chosen block, ensuring a minimum space of 2x2 blocks and at least 6 blocks of vertical clearance for growth.
4. Use Bone Meal to speed up the growth of the Mangrove tree.
5. Once mature, the tree can be harvested for Mangrove Wood and may yield additional Mangrove Propagules.