According to these reliable sources, the leaves of the tomato ARE
poisonous - the offending chemical is an alkyloid called Tomatine.
"Poisonous Plants of North Carolina," Dr. Alice B. Russell, Department
of Horticultural Science; Dr. James W. Hardin, Botany; Dr. Larry
Grand, Plant Pathology; and Dr. Angela Fraser, Family and Consumer
Sciences; North Carolina State University.
QUESTION: Are tomato plants poisonous?
ANSWER: Yes. They contain an alkaloid that interferes with
cholinergic nerves and cause some serious gastrointestinal distress.
QUESTION : Which part of the tomato plant contains the Tomatine?
ANSWER :The highest concentrations are in the stems and leaves. There
are small amounts in the fruit, part of the distinctive flavor of
tomatoes and potatoes comes from these alkaloids, but at
concentrations too low to harm you.
The poison in the leaves can be used for pest control --
Nightshade family plants, such as Tomato, potatoes and tobacco, have
toxic compounds called alkaloids in their leaves. These toxins are
water soluble and can be soaked from chopped leaves and made into
home-made sprays. These sprays also work by attracting natural pest
enemies. The good bugs follow
the smell of the spray in looking for prey. Tomato leaf sprays have
been used to protect plants from aphids
While this spray is not poisonous to humans ON CONTACT, use care in
handling, especially if you are allergic to the nightshade family.
I'm happy to have answered your question.
"tomato leaf" toxicity
"poisonous plants" tomato