There is a plant in my garden that's climbing all over 3 other (large) plants. It's not flowering but it has got dark purple pods all over it. I have no recollection of planting it but it doesn't look like a weed - but I'm thinking it might be strangling the other plants. Anybody know what it might be (I'll try and post a pic) and should I try and disentangle it to get rid of it?
It looks to me to be Eccremocarpus scaber - Mexican glory vine. If it had orangey tube shaped flowers before the pods then it probably is. It's a tender perennial climber, so will die down in the winter and may or may not come back next year depending on whether you have a sheltered site. It does grow from seed so perhaps there were some seeds in your soil?
this is the google image page so might help you identify it.