papa19/2/04 5:25

I have what was labelled as Polygonum bistorta 'Superbum' in my garden.
The RHS does not have it listed but does have Persicaria bistorta
'Superba'. Are they the same thing? What is the correct current
taxonmy of this plant? I assume that somewhere along the line the name
has changed but need to know which is the right name. As the 03/04
Plantfinder has it has P. bistorta 'Superna' that that is the right
name. If so then what happened to Polygonum?

The copy of the RHS encyclopedia I'm looking at now says:
"Polygonumm bistorta 'Superbum'. The picture is of a 'vigorous,
clump-forming perennial that from arly to late summer produces spikes of
soft pink flowers above oval leaves.' It grows to about 2.5' and spreads to
about 2'. This copy was published in 1989.
The 1999 version says "Persicaria bistorta syn. Polygonum bistorta 'Superba'
and to me, the two pics look identical. HTH

--
Sacha
www.hillhousenursery.co.uk
South Devon
(remove the weeds to email me)