Plant and insect ID please

[Tretchikoff]

Sorry if posted twice.
First photo is a pot with a mystery plant. I planted mint in this pot last summer but this plant has no smell and I'm not sure what it is.
Second photo is insects on my euphorbia, what are they and how do I get rid of them please?
Thanks

Can you post a photo?

Sorry photos

I'm not sure tbh, the first looks like a herb of some sort, but I'd expect the leaves to have an aroma. The leaves look a bit like coriander (but it's not) and the flowers similar to thyme. So I'm stumped!

As for the insects, maybe greenfly? (I can't blow up the image enough to see properly). But spraying with diluted washing up liquid in a hand sprayer would probably get rid of them.

Thanks for your reply.
The insects are black apologies I should've said. Will the washing up liquid work on other types of insects?

I think the mystery plant is a campanula about to burst into flower with purple/blue bells. A ground cover/creeping variety rather than an upright plant. There are lots of different sorts but the ground cover variety seems to self seed in my garden.

Maybe silverrain22 has got it - the leaves do look very much like Campanula, when the buds open you will have a better idea.

Spraying with washing up liquid will probably work, and is quite harmless to plants, so worth a try.

Thank you both

Yes, agree campanula, but we'd know for sure if we could see the flowers.

greenfly and blackfly are both aphids. Washing up liquid treatment will work for both. Washing up liquid works on most insects. They breathe through holes in their skin, they drown if they're wet through, and a dash of washing up liquid in the water increases its wetting properties and make sure they get thoroughly soaked.