#6 Skyrim Flora Overhaul
Download it here.
Skyrim Flora Overhaul by vurt does exactly what its description says by overhauling the game's flora in its entirety. It replaces the textures of every tree, shrub, and ground cover in the game with more detailed versions.
It might not seem like much given the game's already-detailed textures, but you'll thank me for installing this one.
