Unfortunately because of console limitation.
It’s a (fairly) popular flora mod, that originally aimed to “overgrow” the world. ReGrowth overhaul originated on PC, as most mods do. The notes for Re-Growth hint at some of the limitations console owners are going to have with mods as they’re funnelled through Bethesda’s website (emphasis added): A mod called Re-Growth that changes the game’s foliage is 287.8MB. Bethesda will let you download up to 2GB worth of mods. As long as the servers are working, you’ll be able to click on mods you’re interested in, read about them, download them and pick the order you want them to load.
