Hi, when the foliage has been cut back in autumn, can you see the tops of the tubers ?, if not, it's planted too deep, you should be able to see the tops of the tubers, they need to get cold to induce flowering, lift and replant at the right depth in october, and you should have no problem getting flowers every year, Derek.

If you don't want to lift them, you can usually just clear away the earth from over the tubers (and a little way clear of them)

thanks all have passed info on to my friend