as the title says i'm looking for trees and grass.

Trees that look good close up please and grass that isnt too high spec'd and that also looks good close and can be used as a ground without having to render separately,

I did try my own grass, i used a fur shader (displacement fur) and tweaked it but it took 30mins to render just the grass and i couldn't render it in the scene which is what i wished to do.

My computer spec's are windows 8 (64bit), 4gb ram and geforce 210 graphic card.