Hi everyone. l touched on this subject in my hello post and thought l'd expand a bit on it here. l got together a list of the clematises that l bought last year that did and did not survive the juglone poisoning given off by the Black Walnut trees in my yard. Here it is, and while not a big list, perhaps others can expand on it and those of us who have those beautiful, but toxic trees can learn which clematises not to plant within its 50' permiteter. I've included their pruning groups to see if there might be a pattern - I'm seeing that group 3 seems to be less tolerant, but that's only from a list of 4, so l look forward to other people's experience.
Clematises that did not survive:
C.'Helios' (group 3)
C. 'Dutchess of Albany'(group 3)
C. 'Nelly Moser' (Group 2)
C. 'Huldine' (group 3)
Clematises that did survive:
C. 'Allanah' (group 2)
C. unknown large white-flowered
C. 'Tage Lundel' (group 1) (thought this one hadn't, but when I just went out to get its name I saw new growth!)
C. Multi-Blue (group 2) This is the first one that I planted shortly after we moved in, and is about 40 feet away from the closest BW.
