Tan's Huge Trees

The mod places large, varied trees through world generation, so terrain that already exists is not changed. Tree species are defined by a generator built from combined commands, and the author lists the default species by biome on the public wiki. Trees appear in the biomes where their species are set to spawn, and a tree generator in the mod can be used to build further trees.

Two supporting systems come with the trees. Built-in leaf litter lets leaves drop onto the ground after a tree is generated, and some trees decay their leaves automatically once a twig part is cut. Generation can slow down on large maps or where many trees are placed. A datapack can turn off the vanilla trees, and players can edit tree settings and share their own trees, since the mod uses a custom pack system like datapacks.

The mod is published for Forge and NeoForge, with files for 1.20.1 and 1.21.1. The server and every player need the mod installed. The license is All rights reserved, and the code is not open source. The latest Forge and NeoForge files are version 1.8.0, released 2026-05-02 on the beta channel. The author notes that 1.8.0 can crash for some players, and a fix is planned for a later release.