Everlasting sweet pea

I have an everlasting sweet pea in a pot next to a fence in North Yorks. It is grumpy, bent double and brown.

Can anyone help me save it?

Many thanks!

 

I think they need to be planted in the ground as their roots like space. Had one in Bucks and funnily enough just ordered some seeds for a variety mix yesterday.

 

My Mum planted some in their garden and they still flower now, and sadly she's been gone 13 years now. Definitely in the ground seems better.

 

Thank you both for your reply. Digging and replanting this bank hol then!

 

I notice you called them " everlasting sweet pea " @Sarah Eley , please don't expext them to be large scented flowers. They're "Everlasting Pea's " ( Lathyrus Latifolius " ) ,a smaller, non-scented relative of the Sweet Pea ( Lathyrus Odorata ).
Still a nice plant to grow, either as a climber or as a scrambling ground cover and what it lacks in size and scent it more than makes up for in quantity, you get way more flowers off these

 

Ah. Thanks for the heads up. I know they are not large and fragrant like the others. Hadn't realised the name difference though. Thank you!