For an opaque finish, you need at least 2 coats. You could also wear it with one coat, I think it looks quite pretty. It's more of an olive green though.
It's dries quite quickly and it's pretty longlasting. I find these nail polishes usually last 4 to 5 days without chipping. I went to a festival last year (camping, etc.) and wore one of their nail varnishes and it lasted pretty much the full 4 days and I'd been wearing it 2 or 3 days beforehand.
The finish is smooth and it's easy to apply, not too gloopy or too solid. It looks gorgeous on and really reminds me of the freshly cut spring grass, and the new leaves. I'm getting very excited for spring/summer now!