Thank you so much for the excellent suggestions! I'm not sure that it is Climbing Iceberg, it looks a little different. The buds do have a bit of pink on them. The rose is about 7' tall, has a mild fragrance and hardly any thorns. It is almost leafless now because it had blackspot and a lot of them fell off. The rose has been there for at least 25 years, probably closer to 40. The rose is in my daughter's garden in Victoria, BC (2 days drive), so I didn't know about the blackspot. She has now fertilized and watered it! Jays

they are Ws as noted.. they have great potential.. and should have never been planted in 2 or 3 foot wide garden bed next t the foundation ... i choose to blame a prior owner.. lol ... either move them out into the lawn where they can grow properly.. or just get rid of them ... scroll down at the link.... and look how glorious the unpruned versions can be.. when properly sited for their growth patterns ... https://duckduckgo.com/?q=weigalia+the+the+lawn&t=ffab&iar=images&iax=images&ia=images ken ps: in case you decide to do the right thing.. note section one.. its very important https://sites.google.com/site/tnarboretum/Home/planting-a-tree-or-shrub

its called a bell jar, lots of mfg make them.

I had the wrong species name for my plant, it is Vernonia noveboracensis. You must have the cultivar Vernonia lettermanii 'Iron Butterfly '. It's a clone of a selection that was shorter and more compact than the species. Any seedlings from your Iron Butterfly will be taller and slightly different than the plant you purchased. It's a good idea to cut the plant back early in the season so it won't flop. If they aren't cut back they can flop and become a doughnut shape. I cut my plant back severely 1 time this year, but I could have done it a second time, it still grew to about 4 feet, but is bushy enough to not flop. Vernonia species will hybridize easily, so it's possible the wild one can hybridize with yours, but I wouldn't worry about it, you might end up with some beautiful hybrids. This is where wild Vernonia lettermanii grows, in novaculite rock along a river running though mountains in Arkansas and Oklahoma. They grow out of cracks in the rocks and sometimes get flooded, so they need good drainage, but can handle periodic flooding. Iron butterfly should do well in regular garden soil, so they claim. The Chicago Botanical Garden did a comparative study of different Vernonia cultivars including Iron Butterfly. Photos by the amazing Adam Black