A completely chemical free idea is to use a torch. You can buy small ones for such purposes that attach to a small or large propane tank. Of course, you have to be careful and not do it on a windy day. I just bought a cheap one at Harbor Freight for my home. It only takes a few seconds to wilt/burn the weeds. Another thing I realized the heat alone from the torch can damage plants around it. Not a permanent solution and will need to be done on as the weeds come back. http://www.acehardware.com/product/index.jsp?productId=18505996&KPID=14939044&cid=CAPLA:G:Shopping_-_Weed_Control_Products1&pla=pla_14939044&k_clickid=59bcfa3a-376a-4b47-bc67-e1ba80b2bc63&gclid=EAIaIQobChMIzcTW3-D52wIVAUCGCh3HaAsvEAQYAyABEgLdKfD_BwE Shannon Lindridge, Registrar ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).