Sambucca

They grow as big as you let them. The neighbour cuts his down to 12" every spring to keep it in check.

it will need a lot of water in a pot mind.

They are lovely plants though.

I have Sambucus 'Black Lace' and, as Eileen says, it can grow pretty tall. In fact, I have just trimmed some off of mine to give another shrub some more light!

It looks nice in a pot. I keep cutting mine back, it sends out long branches all the time. The flowers look very pretty against the dark leaves.

Thanks everyone?I am pleased with it.

Left to itself it will grow as big as a wild elder. i wouldn't think it will be happy in hat lovely pot for very long though unless you are going to experiment with bonsai.

Absolutely lovely plant, hopefully you'll manage to keep it contained. Mine got smashed and broken by the wind so in the end I had to remove it, nowhere in the garden was safe, such a shame.