I'd agree that the stick appears to be the right way up. I've grown lots of them from hard wood cuttings and they strike very easily. But I haven't tried it in Amsterdam and you might find it a bit more difficult there. They love very hot weather and strong sunshine. I usually dip the stems in rooting hormone and put them in sand. You'll need to keep yours very warm, especially now when you're in winter. I've never had cuttings with wax on them but if I did get some then I'd be inclined to cut the waxed end off.

will that really grow??

Normally it would, but it would be interesting to get an update.

Nope they didn't. I had on the same greenhouse for the same period three of these cuttings which failed and eleven of my own cuttings which all have grown and I have already transplanted them.

Maybe those "sticks" you bought were already too old and perhaps dried.

I recently bought some from he market too. i was advised to scrape off both wax ends and put the whole stick into water and leave it. it should grow roots within two weeks. i will keep you posted if i have any success!

Did anyone have any success on this? I’m in the same position but I’ve left it long and I’m afraid they may have dried up too much