Why I was looking at grants.

I own over 100 acres of land in the state of Washington. Last week a friend of mine said that if I grow certain types of plants and trees on my property that I might be eligible for certain types of government grants. I had never heard of this,but I have to say I was very interested to see if this was true. I went online to see if I could find anything on this subject. I came across some sites that talked about grant that had to do with providing habitat for certain animals but nothing on plants nor trees