Sanguinaria canadensis 'Plena' ('Multiplex')
is the double-flowered form of
bloodroot - so called for the poisonous orange juice it exudes when cut. It has to be one of the most beautiful of all
John Massey (www.ashwood-nurseries.co.uk) gave me my present clump, which
has been expanding steadily in humus-rich soil in part-shade for 3 years now.
It will tolerate some lime. From past experience (I
have lost it twice), it needs fairly particular conditions to do well - cool
climate, summer moisture and decent drainage - as well as a raised bed so
you can get close to it. It doesn't like being crowded or buried in leaves
either. But it is well worth persevering to find the right spot. Z3.