Thanks for the suggestions Sacha. The 3rd isn't parsley or any herb for that matter. It's tasteless. I haven't tasted the 5th one yet. I will do so later. Not sure about the 1st one being Catalpa...thingy. The leaves aren't quite the right shape unless there are a lot of variations. It is growing fast as are the others. I know it isn't Morning Glory now as it isn't a climber. The stem is stiff. The lookalike parsley isn't growing fast so maybe it won't be a big plant. Still not had a definite ID on any of them. They need to grow a bit. Best to get more photos in a few weeks and post again. It's certainly turning into a mystery for me. I'm a bit nervous of number 4 and what to do with it. I don't want to destroy it as it might be a very nice plant that isn't cannabis.