Fast Saplings

Here's a summary you can use for Modrinth:

FastSaplings is a simple Fabric mod for Minecraft 1.21.4 that makes saplings grow much faster than normal. Instead of waiting 3-5 minutes for a tree to grow, saplings near you will grow within seconds!
How it works:
Within a 16 block radius of the player, saplings have a 10% chance to grow every game tick, making them grow dramatically faster than vanilla.
Features:

Works with all sapling types (oak, birch, spruce, jungle, acacia, dark oak, cherry, and more)
No configuration needed — just install and play
Lightweight with no performance impact

Requirements:

Minecraft 1.21.4
Fabric Loader 0.19.2 or later
Fabric API 0.113.0+1.21.4