Evergreen fast grower grass for this purpose?
I'm doing a design where I need a fast-growing background plant for a far corner which will block a fence/alley view. It would be in a bed about 5' wide x 20 feet long, so needs to get to about 5' wide by 6-8' tall or so asap, as the folks are selling in 18 mos. or so. In front of it will go various contrasting grasses and flowering perennials, and sequential bulbs, along 20' concrete wall at the rear of this 5' deep bed.
The location is near Sacramento, CA--hot, dry summers, [maybe z 9]--full sun. I prefer a green as close to chartreuse as I could get, but realize that may not be possible. A graceful habit which will allow underplanting is desirable.
Also, how large a plant [5 or 10 gallon] might be needed to meet this goal?
Thanks for your suggestions.