 Hi, Vince Sims, the Garden Rebel here for Black Cow, the mature manure. Get a better looking lawn with Black Cow. Apply to your plants and your lawn as top dressing and get 10 times more nutrients than topsoil. Black Cow will feed your lawn, your flower beds, and vegetable gardens for up to three months. Everything grows better with sun, water, and Black Cow. Black Cow, the mature manure. Black Cow.