Mangrove Trees naturally spawn above water in Twilight Swamp and Fire Swamp biomes, but are most common in Twilight Swamps due to the amount of water. Mangrove Trees are about 15 blocks tall, with around the bottom 7 blocks being split into 3-5 trunks, and they have smaller flat round areas of leaves. Additionally, Mangrove Trees spawn with roots below each split trunk.
Mangrove Leaves drop Twilight Mangrove Saplings, which can be grown into Mangrove Trees. When Mangrove Trees are grown via saplings, the tree is centered around the sapling. Twilight Mangrove Saplings cannot be placed in water, so sapling-grown Mangrove Trees are always over land, not water. Mangrove Trees also never have Roots underneath when grown from saplings.
Mangrove Trees are made from Twilight Mangrove Wood, which can be crafted into Mangrove Planks. Mangrove Planks can be made into Mangrove Slabs, Stairs, Buttons, Trapdoors, Fences, Fence Gates, and Pressure Plates. Mangrove Planks, Slabs, Stairs, and Fences can be found inside of Skeleton Druid Houses. All Mangrove items are required for the Maniacal Dendrologist advancement.