[Hilary]

In May we went to our local nursery for a few odds and ends. This is always an opportunity to take a few photos
This flowering vine was at the back of the plot where overgrown and unwanted plants are usually dumped .
Now I see from the photo that they appear to be growing in pots tied high on the fence.
Can anyone enlighten me as the name ?

[Caroline]

Could it be Doxantha unguis cati also known as Bignonia tweediana? It certainly matches the photo in an elderly gardening book I inherited from my mother.

[David Dickinson]

It does have those "cat's claws", doesn't it? It looks very much like the ones I see in Rome. But I don't know if there are any other similar species. It can be quite a pest in Rome as it is rampant.
I wonder if the nursery are letting it grow into the pots from a plant in the soil. That looks like a lot of foliage for the small pots to produce. Perhaps they use the "layering" technique to increase their stock. I knew about layering but here is an article that talks about 5 variations on the same theme. I wonder what type of plants will root with mound layering? I'd be afraid to try it with many of our mediterranean plants that like good drainage so much. https://www.gardeningknowhow.com/garden-how-to/propagation/layering/propagation-by-layering.htm

[Hilary]

Many thanks Caroline and David

There are 42, if I counted correctly, synonyms for this plant, Dolichandra unguis-cati  being the accepted name