Hi Anke, Thanks but we've used all those options. When we had a couple of allotments we had 'woodhenge' which was a permanent structure for beans. We also do use willow sticks which we give to the sheep first to debark. I usually grow climbing beans inside the tunnel and they grow to the crop bars up strings, but I want to see if climate change is making a noticeable difference to summer temps and my ability to grow beans outdoors. This year though I want to grow sweetpeas in the front (flower) garden and really only hazel poles look really good for those. I stopped using canes a few years ago when I realised they often contained chinese pests, still alive and waiting to colonise (well probably not, but you can't be too careful) Anyway, I don't like canes.
For hazel poles, you need to coppice your trees. It's terrifying cutting down a healthy tree to only a foot above ground, but it really does grow back with lots of rustically straight poles.
We looked round half the woods today and there are quite a few more poles than I had thought, so we'll check the coppice in the morning and hope there are more. There are also sheep-chewed willow branches to check for any straight ones although really the plants don't mind if their poles are wonky
I've searched online a little and all I could find was poles from Sussex at great expense and even greater delivery charges. Nothing so far in Scotland - I can't be the only person coppicing in the country!