All credits go to Bethesda, for making such a beautiful game and to the talented people who made these amazing mods for making this game infinitely more beautiful!

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Introduction:
This is my attempt at making some comparison shots of several Grass/Tree/Landscape mods. Ones I personally like, some that are more popular, and some that maybe do not get enough love.
This comparison was NOT made to show how some mods are "better" or "worse" than others. That all boils down to your own personal tastes and the power of your computer.
The reason for this compilation was that it sounded like fun, I like to do fun things, I think you do too, and I had fun making them.
Please do not get upset if you do not see a mod that you think should, or deserves, to be showcased.
Please leave a comment and suggest anything, and I will gladly make more of these and include other mods. Tips and suggestions are extremely welcome!

Information:
Under, or above, each photo will be a list of mods specific to that photo as well as average, minimum, and maximum framrates, also my opinions of the mod, and environmental settings. All mods have the recommended and necessary changes made to the skyrimprefs.ini, skyrim.ini, and etc...
Mods used in all photos are Skyrim Uber Textures, Real Roads, Static Mesh Improvement Mod, Natural Lighting And Atmospherics, Vivid Landscapes - Rocking Stones, Realistic Water Two + 2k ENB Textures + ENB Water Color, and Realvision ENB version 254a.

My System Specs:
i5-3570k @ 4.2GHz
EVGA GTX780 OC, 5% Overclock
AS Rock Z77 Extreme4
8GB Corsair Ram, 1600MHz
Resolution is 1920x1080

Other Info:
uGridsToLoad=7
AOF HD Tree LODs 4k
Better Riften Tree LODs
Enhanced Distant Terrain 2
Realvision v 254a

Disclaimer:
My Reason for using Realvision instead of a nicer looking, more cinematic ENB, is because it is the most popular ENB and it is what most people are still using. It also gives a good framerate compared to other ENBs. I will not include framerates without an ENB because I believe you shouldn't even play Skyrim without an ENB. Add 10-15fps to the ones listed and that's where it should be at without an ENB. Add 5-8fps since you are more than likely on default uGridsToLoad.

Mods Tested:
Lush Tree And Grass
SkyRealism - Grass
Grass And Grass
Grass On Steroids (Vanilla & Tall, with & without SFO versions)
Skyrim Flora Overhaul
Dat Grass (Steam)
Unbelievable Grass HD 1k (AceeQ Modding)
Grass Field
Skyrim Bigger Trees
Beautiful Landscapes

Average Framerates for each mod are at the bottom of the page.
DO NOT compare these framerates to your framerates, everyone's will be different depending on their system and the amount of mods they have.
DO compare these framerates to the default number I have provided. That is the only accurate way of judging these framerates.

[Grass]

[Framerates]:
Default:_______________________________42
Lush Trees And Grass:___________________38
SkyRealism - Grass:_____________________37
Grass And Grass:________________________26
Grass On Steroids - Tall:_________________40
Skyrim Flora Overhaul 2.0:_______________38
Dat Grass (Steam):______________________26
Unbelievable Grass HD 1k:_______________22
Grass Field:____________________________27
Skyrim Bigger Trees:____________________NA

[Framerates]:
Default:_______________________________43
Lush Trees And Grass:___________________40
SkyRealism - Grass:_____________________37
Grass And Grass:________________________27
Grass On Steroids - Tall:_________________41
Skyrim Flora Overhaul 2.0:_______________40
Dat Grass (Steam):______________________32
Unbelievable Grass HD 1k:_______________29
Grass Field:____________________________38
Skyrim Bigger Trees:____________________NA

[Framerates]:
Default:_______________________________45
Lush Trees And Grass:___________________45
SkyRealism - Grass:_____________________45
Grass And Grass:________________________41
Grass On Steroids - Tall:_________________45
Skyrim Flora Overhaul 2.0:_______________42
Dat Grass (Steam):______________________44
Unbelievable Grass HD 1k:_______________44
Grass Field:____________________________39
Skyrim Bigger Trees:____________________NA

[Framerates]:
Default:_______________________________50
Lush Trees And Grass:___________________48
SkyRealism - Grass:_____________________45
Grass And Grass:________________________41
Grass On Steroids - Tall:_________________48
Skyrim Flora Overhaul 2.0:_______________42
Dat Grass (Steam):______________________44
Unbelievable Grass HD 1k:_______________31
Grass Field:____________________________32
Skyrim Bigger Trees:____________________NA

[Framerates]:
Default:_______________________________39
Lush Trees And Grass:___________________30
SkyRealism - Grass:_____________________35
Grass And Grass:________________________23
Grass On Steroids - Tall:_________________39
Skyrim Flora Overhaul 2.0:_______________36
Dat Grass (Steam):______________________32
Unbelievable Grass HD 1k:_______________35
Grass Field:____________________________38
Skyrim Bigger Trees:____________________NA

[Framerates]:
Default:_______________________________42
Lush Trees And Grass:___________________34
SkyRealism - Grass:_____________________38
Grass And Grass:________________________25
Grass On Steroids - Tall:_________________40
Skyrim Flora Overhaul 2.0:_______________38
Dat Grass (Steam):______________________34
Unbelievable Grass HD 1k:_______________37
Grass Field:____________________________42 (No change from default in this area)
Skyrim Bigger Trees:____________________NA

[Framerates]:
Default:_______________________________43
Lush Trees And Grass:___________________39
SkyRealism - Grass:_____________________35
Grass And Grass:________________________26
Grass On Steroids - Tall:_________________43
Skyrim Flora Overhaul 2.0:_______________40
Dat Grass (Steam):______________________36
Unbelievable Grass HD 1k:_______________30
Grass Field:____________________________28
Skyrim Bigger Trees:____________________NA

[Framerates]:
Default:_______________________________42
Lush Trees And Grass:___________________32
SkyRealism - Grass:_____________________34
Grass And Grass:________________________24
Grass On Steroids - Tall:_________________40
Skyrim Flora Overhaul 2.0:_______________35
Dat Grass (Steam):______________________25
Unbelievable Grass HD 1k:_______________21
Grass Field:____________________________31
Skyrim Bigger Trees:____________________NA

[Framerates]:
Default:_______________________________47
Lush Trees And Grass:___________________44
SkyRealism - Grass:_____________________38
Grass And Grass:________________________26
Grass On Steroids - Tall:_________________47
Skyrim Flora Overhaul 2.0:_______________45
Dat Grass (Steam):______________________38
Unbelievable Grass HD 1k:_______________22
Grass Field:____________________________31
Skyrim Bigger Trees:____________________NA

[Framerates]:
Skyrim Flora Overhaul 2.0:__________________38
Skyrim Flora Overhaul Summer:______________38.5
(2)Grass On Steroids - Tall (For SFO):_________40
(2)GOS - Tall (For SFO) + Beautiful Landscapes:_35

[Framerates]:
Skyrim Flora Overhaul 2.0:__________________42
Skyrim Flora Overhaul Summer:______________43
(2)Grass On Steroids - Tall (For SFO):_________45
(2)GOS - Tall (For SFO) + Beautiful Landscapes:_43

[Framerates]:
Skyrim Flora Overhaul 2.0:__________________38
Skyrim Flora Overhaul Summer:______________42
(2)Grass On Steroids - Tall (For SFO):_________48
(2)GOS - Tall (For SFO) + Beautiful Landscapes:_43

[Framerates]:
Skyrim Flora Overhaul 2.0:__________________40
Skyrim Flora Overhaul Summer:______________42
(2)Grass On Steroids - Tall (For SFO):_________41
(2)GOS - Tall (For SFO) + Beautiful Landscapes:_35

[Framerates]:
Skyrim Flora Overhaul 2.0:__________________35
Skyrim Flora Overhaul Summer:______________38
(2)Grass On Steroids - Tall (For SFO):_________36
(2)GOS - Tall (For SFO) + Beautiful Landscapes:_32

[Trees]

[Framerates]:
Default:_______________________________55
Lush Trees And Grass:___________________32
Skyrim Flora Overhaul 2.0:_______________48
Skyrim Bigger Trees:____________________39

[Framerates]:
Default:_______________________________57
Lush Trees And Grass:___________________48
Skyrim Flora Overhaul 2.0:_______________44
Skyrim Bigger Trees:____________________45

[Framerates]:
Default:_______________________________51
Lush Trees And Grass:___________________41
Skyrim Flora Overhaul 2.0:_______________35
Skyrim Bigger Trees:____________________43

[Framerates]:
Default:_______________________________47
Lush Trees And Grass:___________________32
Skyrim Flora Overhaul 2.0:_______________40
Skyrim Bigger Trees:____________________37

[Framerates]:
Default:_______________________________40
Lush Trees And Grass:___________________33
Skyrim Flora Overhaul 2.0:_______________40
Skyrim Bigger Trees:____________________36

[Framerates]:
Default:_______________________________40
Lush Trees And Grass:___________________40
Skyrim Flora Overhaul 2.0:_______________34
Skyrim Bigger Trees:____________________40

[Default V Lush Trees And Grass Original]

[Framerates]:
Default:_______________________________55
Lush Trees And Grass Original:____________39

[Framerates]:
Default:_______________________________57
Lush Trees And Grass Original:____________50

[Framerates]:
Default:_______________________________51
Lush Trees And Grass Original:____________47

[Framerates]:
Default:_______________________________47
Lush Trees And Grass Original:____________39

[Framerates]:
Default:_______________________________38
Lush Trees And Grass Original:____________38

[Framerates]:
Default:_______________________________40
Lush Trees And Grass Original:____________40

[More Comparisons]

[Framerates]:
Default:_______________________________41
Skyrim Flora Overhaul 2.0:_______________38
Skyrim Flora Overhaul 2.0 + Dat Grass______34 (Not Compatible)

[Framerates]:
Default:_______________________________41
Skyrim Flora Overhaul 2.0:_______________38
Grass On Steroids - Tall:_________________40
Grass On Steroids - Tall (For SFO)_________40

[Framerates]:
Default:_______________________________45
Skyrim Flora Overhaul 2.0:_______________40
Grass On Steroids - Tall:_________________45
Grass On Steroids - Tall (For SFO)_________45

[Framerates]:
Default:_______________________________50
Skyrim Flora Overhaul 2.0:_______________42
Grass On Steroids - Tall:_________________48
Grass On Steroids - Tall (For SFO)_________48

[Framerates]:
Default:_______________________________42
Skyrim Flora Overhaul 2.0:_______________35
Grass On Steroids - Tall:_________________40
Grass On Steroids - Tall (For SFO)_________36

[Framerates]:
Default:_______________________________50
Skyrim Flora Overhaul 2.0:_______________42
Grass On Steroids - Vanilla (For SFO):______39
Grass On Steroids - Tall (For SFO)_________40

[Framerates]:
Default:_______________________________50
Skyrim Flora Overhaul 2.0:_______________38
Grass On Steroids - Vanilla (For SFO):______48
Grass On Steroids - Tall (For SFO)_________48

[Framerates]:
Default:_______________________________43
Skyrim Flora Overhaul 2.0:_______________40
Grass On Steroids - Vanilla (For SFO):______41
Grass On Steroids - Tall (For SFO)_________42

[Framerates]:
Default:_______________________________42
Skyrim Flora Overhaul 2.0:_______________35
Grass On Steroids - Vanilla (For SFO):______35
Grass On Steroids - Tall (For SFO)_________36

[Framerates]:
Default:_______________________________41
Skyrim Flora Overhaul 2.0:_______________38
Skyrim Flora Overhaul Summer:___________38.5

[Framerates]:
Default:_______________________________43
Skyrim Flora Overhaul 2.0:_______________40
Skyrim Flora Overhaul Summer:___________42

[Framerates]:
Default:_______________________________47
Skyrim Flora Overhaul 2.0:_______________45
Skyrim Flora Overhaul Summer:___________45

Most of these grass mods are not compatible. Here is a good example. The beautiful trees of Skyrim Flora Overhaul 2.0 just do not mix well with Skyrim Bigger Trees. Skyrim Bigger Trees has its fair share of visual glitches by itself. It, mixed with SFO 2.0 makes the LODs look very odd and the textures are very stretched and ugly.

However, in most cases, Skyrim Bigger Trees gives Skyrim a very different feeling, almost giving it a miniaturistic atmosphere, like you're inside a world blanketed in massive trees. Completely changes the feeling of the game. If you can get over the stretched textures and visual glitches at the bases of trees sticking out of hills that is.

[Screenshots]

[Average Framerates]

Default:

___Average: 44(Grass) 44(Trees)
_____Minimum: 39(Grass) 35(Trees)
_______Maximum: 51(Grass) 55(Trees)

Lush Trees And Grass:

___Average: 39(Grass) 38(Trees)
_____Minimum: 30(Grass) 32(Trees)
_______Maximum: 48(Grass) 48(Trees)

SkyRealism - Grass:

___Average: 38
_____Minimum: 34
_______Maximum: 45

Grass And Grass:

___Average: 28
_____Minimum: 24
_______Maximum: 42

Grass On Steroids - Tall Height:

___Average: 43
_____Minimum: 39
_______Maximum: 48

Grass On Steroids - Vanilla Height:

___Average: 43
_____Minimum: 39
_______Maximum: 48

Grass On Steroids - Tall (For SFO):

___Average: 41
_____Minimum: 35
_______Maximum: 48

Grass On Steroids - Vanilla (For SFO):

___Average: 41
_____Minimum: 35
_______Maximum: 48

Skyrim Flora Overhaul 2.0:

___Average: 40(Grass) 39(Trees)
_____Minimum: 35(Grass) 34(Trees)
_______Maximum: 45(Grass) 48(Trees)

Skyrim Flora Overhaul Summer:

___Average: 42(Grass) 41(Trees)
_____Minimum: 36(Grass) 34(Trees)
_______Maximum: 50(Grass) 51(Trees)

Grass On Steroids - Vanilla (For SFO) + Beautiful Landscapes (Using SFO 2.0):

___Average: 36
_____Minimum: 31
_______Maximum: 41

Grass On Steroids - Vanilla (For SFO) + Beautiful Landscapes (Using SFO Summer):

___Average: 38
_____Minimum: 32
_______Maximum: 46

Dat Grass:

___Average: 35
_____Minimum: 25
_______Maximum: 44

Unbelievable Grass HD 1k:

___Average: 30
_____Minimum: 21
_______Maximum: 44

Grass Field - More Color Version:

___Average: 34
_____Minimum: 27
_______Maximum: 42

[Final Notes]

Hope you enjoyed, and if this helped you out in any way, or if you just like it, please download and endorse.