Enhanced Trees By Maxmat -

This is a standard Minecraft mod. Drop the downloaded .jar file into your mods folder with the appropriate mod loader (like Forge or Fabric).

If you are modding , you are likely thinking of Enhanced Vanilla Trees . It is one of the most popular overhauls for adding realistic physics, thicker foliage, and custom sizes to the game's foliage. Enhanced Trees by MaxMat

Run the FOMOD installer to choose your options (Lush, Custom Large, or Basic). This is a standard Minecraft mod