It went on to do really well, and produced masses of lovely mauve flowers.
It eventually grew to about 5 feet tall - which is why I had bought it. I had wanted something to add some height to my collection of potted flower plants, and it certainly did that.
When Autumn came and the Verbena stopped flowering, I cut the stems down to about 12" tall.
I'm not sure now whether I did the right thing. Encouraged by our currently very mild weather, the stems of this and many other plants are now beginning to sprout new shoots.
I need some advice please. Should I now cut last year's stems right down to ground level, or should I let them carry on and grow those new shoots? And do you think I should re-pot this plant (maybe into a bigger pot) or just top it up with a bit of fresh compost?
All advice gratefully received!