When I first heard the term helicopter hydroseeding I had absolutely no idea what the person was talking about. After a fair amount of time having this explained to me I finally got the point of it all. Basically if you have an area that requires grassing but it is not accessible by vehicle, a helicopter with a tank of this stuff attached to it is used to spray it on to the appropriate surface. I can’t say I had ever considered the idea of a seed and fertilizer mix being sprayed on to a hill via a chopper. A crazy concept but it certainly works.