|MadSci Network: Zoology|
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
Try the links in the MadSci Library for more information on Zoology.