Since the age of real teeth..... I have never had a problem getting static grass to stand up......
It's really very simple.... it's call static grass... it is what needs the static charge to stand up.....for years I have simply been keeping it in an old plastic grated cheese shaker, shaking it in the plastic container is what imparts the static charge it needs..... sprinkle over the glue, let it set up, BUT NOT DRY, turn the base over and tap it, collecting with left over for reuse, and then with the base up-right again I gently blow across it.... I use to use a straw, now it's easier to simply use my air brush and set the air pressure as low as I can, and gently blow across it until it stands up. After it is standing then I simply let the glue dry....
If I need to add additional grass, I simply add thinner white glue/water mix, and add some more, and continue on. I also do small sections at a time.
If you can't turn your base over to collect the excess, I suggest you have a vacuum running..... to collect the excess that's going to blow around.
I've yet to worry about what color static grass I use, simply because I paint it after it is dry anyway. Nothing looks as lovely as unpainted static grass, with all the little red and blue fibers mixed in. Brands I use are Hudson and Allen, Verlinden, and Noch. (I like the Noch the best, since if you look hard enough you can find a long and a short type.)