Nick,
Perhaps not wishing to know, but "teratogenic" means that the alkaloids of
the tansy ragwort may induce growth abnormalities in fetuses.
Regards,
Paul van Westendorp Ph. (604) 576-5639
Provincial Apiculturist Fx. (604) 576-5652
BC Ministry of Agriculture, [log in to unmask]
Fisheries & Food
Surrey, B.C.
CANADA V3S 4P9