When potatoes are exposed to light, sunlight especially, they begin turning green. The green is a chemical called solanine which is unwholesome to poisonous depending on the individual and the amount ingested. It is especially hard on people with arthritis and they should avoid any fruit of the solanum family (potatoes, tomatoes, peppers, eggplants, tomatillos, etc). Some varieties of potatoes are more affected than others. Kennebecs are one, Shapodies are another. I is my opinion that the lighter the skin colour of the potato, the more likely it is to green up. In the spring, I deliberately expose my seed potatoes since the greening process helps them sprout faster. This process is called chittering.HTH bloke@silicon-north.com (Bill & Chris Loke)[Z4/5 on a good day] The Lokeation, RR#1, Kars, Ontario K0A 2E0 Elderberries have more fun than younger berries! -----Original Message----- From: penny x stamm <pennyx1@Juno.com> To: gardeners@globalgarden.com <gardeners@globalgarden.com> Date: Saturday, October 17, 1998 10:24 PM Subject: [gardeners] Re: Potatoes and squash >Bill & Chris, what does it mean when potatoes 'green up'...? > >Penny, NY zone 6 > >___________________________________________________________________ >You don't need to buy Internet access to use free Internet e-mail. >Get completely free e-mail from Juno at http://www.juno.com >or call Juno at (800) 654-JUNO [654-5866]