Hydromulch

I saw hydromulch at the BRiCk. It looked like they were painting the grass very light green. But then I learned that it was just lots of seeds and fertilizer and green liquid to help the grass grow, because when they were building the BRiCk they had to dig all the grass up. So they put the grass back with a bunch of seeds called hydromulch. I also learned on wikipedia that aircraft can put hydromulch on places that had a fire. And helicopters put hydromulch on big places that need it.