Overgrowth Patch 4 is a release file of the Minecraft resource pack Overgrowth 32x [1.18+], made for Minecraft 1.16.3, 1.16.5, 1.17-Snapshot, 1.16.4. It was published on March 25, 2021 and is 34.3 MB in size. For the full description, screenshots and every other version, visit the Overgrowth 32x [1.18+] resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.