|Deep shade or semi-shade, where its dense growth
may shade out other woodland flowers .
March - April.
A metre per year.
Dog's mercury is highly poisonous.
Methylamine and trimethylamine are thought to be present,
together with a volatile oil and saponins Symptoms of
poisoning appear within a few hours; they can include
vomiting, pain, gastric and kidney inflammation, and
sometimes inflammation of the cheeks and jaw and drowsiness.
The first-known account of this phenomenon probably
dates from 1693, when a family of five became seriously
ill as a result of eating the plant (after boiling and frying it);
one of the children died some days later as a result