How does caffeine with water affect a plant?
Camellia sinensis (tea leaf source) uses caffeine to harm competitive plants. This process of plants using phytotoxins against other plants is called allelopathy. Here is a sample experiment http://www.plantingscience.org/index.php… http://wiki.answers.com/Q/How_does_caffe… http://www.chm.bris.ac.uk/webprojects200… “The scarcity of weeds around coffee trees is related at least in part to a slow rate of leaching of caffeine from the tree canopy as well as from litter and lost coffee beans.” http://www.colostate.edu/Depts/Entomolog…