While testing this mod I found that it caused horrible framerates in certain areas. Even with just this mod, I'd get around 10FPS in the Ascadian Isles. As such, use at your own discretion.
Meshes/f/flora_bc_podplant_03.nif has a
NiSourceTexture Tx_BC_podplant_03_g.tga, but no
Tx_BC_podplant_03_g.tga file is included in the mod texture files. Removing all references (with Nifskope) to Tx_BC_podplant_03_g.tga fixes the issue. A fixed mesh file can be downloaded from the below link "Download Link" on this page.
Be sure to use the OPTIONAL stuff if you also plan to use Vurts Grazeland Trees II!