"Paddy's Pig" wrote
Pat, I hope you don't mind but I've asked on a UK gardening Newsgroup for
you and copied your poho to my flickr page so they can see it, that Ng being
non-binary.
Some knowledgeable nurserymen (or wives) on there so you should get an
answer.
http://www.flickr.com/photos/bobhobden/4303645971/--
Regards
Bob Hobden
W.of London. UK