yes it is KOG
I wouldn't bother, the containers will be lighter if you dump the contents. If you wanted to keep the Lysimachia you could put a small piece in a small pot
more like Solanum dulcamara, which is known as Bittersweet.
Climbing hydrangeas aren't plants for a pot against a south facing wall. Better in the ground but if that's not possible, get it out of the sun. Mine does very well in more or less complete shade
a Solanum, one of the nightshades
I'm in no position to criticise anyone else's photography pp
That's what the distance view looks like to me Grannybee. Close up is too blurred to be sure.
Not an orchid though.
Maybe there was an orchid in the pot and the Linaria seeded into it.
some sort of cherry maybe
Have you a photo of the trunk?