Ah, thanks! That makes sense, as vigourous species can affect small scions in the reverse by 'speeding them up' in some instances. So if I chose a grafted large plant - usually the 'Glauca' or 'Aurea' of most species - then I should be ok. That's great.

Martin, thanks. I have read a number of your posts (or should I say a IVXLM of your posts, LOL?!) You always educate me in many ways. I hope your choices improve in Denmark. Believe it or not, here in north Florida, there are no choices either. I may as well be in Denmark. Just a mere 2-3 hours away, there are hundreds of choices. But in Jacksonville (north Florida), there are none other than Lowes and Home Depot - "big box stores (BBS)" - selling "basic" adeniums - single pink, white and red. I have read that a few grafted ones have come in on occasion, but I've never seen them here. UPDATE EDIT: I SAW them here! I went back to Lowes yesterday and lo and behold, in and amongst the adenium there were a few grafted adenium. All of the blooms were spent, so it was very difficult to guess what they had looked like in all of their glory. However, the manager offered to mark them down, without my even asking, and so I came home with four, new, grafted adenium. Shang, thanks for the reply. No, I don't have any experience in grafting but it sounds like a single graft is all I need. Since you're here in Florida in Zone 9, I always read your posts with great interest. I learn so much from you. Dain, those are AMAZING plants! Thanks for taking the time to reply and the photo. I would be thrilled to get a grafted plant that looked like that. So you folks educated me - a single graft is all I need - I gather branching will occur down the road as the plant matures and with good pruning. I'm excited to place an order. UPDATE EDIT: I no longer need to place an order, but I hope this is helpful to others. Carol

In general, the only hydrangeas that are grafted are tree form or standard trained paniculatas and typically only those from Canadian suppliers. Any shrub forms are not. As to why the flowers on yours are not uniform in appearance could be due to a number of reasons. Flowers that are produced later in the season may not have the exact appearance of those produced earlier simply because of different growing conditions that arise later in the season. And any cultivated variety has the ability to revert back to the species plant in part.

'is that band of different colored bark what you consider to be the graft line?' No, it is somewhat above that strip mark. You can see where the bark changes colour to darker. Dark is the scion, light is the rootstock in this particular case. More often than not scion and stock have different coloured barks. There may also be an abrupt change in thickness but in this case this is not evident. From the pics after the first it looks like the graft line is not horizontal but quite slanted. That is what may be confusing you. Just go by the bark colour.