i have tried annual sweetpeas in pots which i found not to be as good as when i put them into the ground, they soon dried out and became yelowy and not alot of flowers, i found for the best show they need space, so im thinking its the same for everlasting ones to, they do like to ramble a bit and be supported or they will just drop forward. hope this helps

I would say no too. The pea family do so much better in the ground than in pots generally and as this is a perennial pea, it will definitely be far happier there. They tend to become brown and straw-like at the bottom with only the upper parts looking healthy. They are also very difficult to get right with watering in a container. Much better to let water conductivity through the ground take over.

I agree with both Fractal an Sanbaz, but.............?
I do grow latifolia in pots,but key is tall potin shade but hed in sun. this many yr ago, seem tome like clematis, so for long time i plant both in sam pot.
not much beet the yelow clematis with pink latifolia.
try 3ft tal pot for best.

Good tip Derek.

Many thanks for your advice, I have a very small paved garden so have to use pots. I will give it a try in a large pot and see what happens.

thats fine just dont put to many in together, give them space and depth :o)