OK I have seen mods that some of you have put out and they are almost all awesome! The others are just wonderful.
I have a request! I need a tree. basically what I need is a fuselage block with the texture/skin of pine trees 
even if one of you world builders had a tree and figured out how to make it an item.
For those who are curious. http://imgur.com/0Z8fJIN
Thanks Kerbango
@Kerbango It doesn't take much for trees and grass, the hard part is not putting in too much and getting huge lag. If you look under the terrain, the trees are under a tab just like the textures, and you can paint them on, or mass add them randomly. After you import the asset pack into Unity (Just use the store browser tab WITHIN Unity and it will import into the project you are currently working on, no problems.)
Then you just go to Add Tree, and choose Conifer (type in search), and use the tree picture that has the play arrow on the icon (That just means the file contains; the shape, the textures, and normalizing maps for shading.)
Good Luck, and let us know how it turns out!
Okay. I guess I'll go learn Unity and do what you suggested. Thank you @Cadin @Tully2001
@Tully2001 @Kerbango Yup, it's just part of the stardard asset pack, which is free and has a ton of good stuff in it, even ramps and etc.
Standard Asset Pack
You can even make an FPS "SimplePlanes : Warrior Mechanic Edition"!
@tully2001 Your simple designer mod has the perfect type of pine trees, I just want to reach out and place them on my stage.
@Cadin I don't care it they interact physically. I am just going to build this to take a few screenshots.
Heya, are you trying to make trees that physically interact? (E.g. Get knocked over, etc?) Otherwise I think there should be a couple of tree assets within the free Unity standard assets pack...
@Testin123 thanks I forgot the exclamation point. Couldn't get it to work so did it the link way.
Like this: 
@Kerbango use this: 
@Cadin @tully2001