Re: Why can't a plant be watered with milk?

Plants can be "watered" with milk but milk contains many compounds that 
plants can't use. Soil microorganisms use these compounds in milk to form 
other compounds that can be toxic to plants. So while milk can be used on 
plants, it isn't as good as clean water and other organisms can even make 
compounds from milk that are toxic to plants.  Jack Paxton