Posted: 21/09/2015 at 20:03
Dont grow this particular variety but grow Corries Gold, whirling butterflies and its pink flowered cousin
however, mine too are flowering, sprawling and waving about. I will leave them be until flowering stops then cut the loose stems back. I take cuttings....taken 3 weeks or so back.......to provide plants for next year.
i grow them in light warm soil in sunny spot and they survive here in winter...cornwall. They will be less leggy if not fed, over watered or in heavier soils.
i would be inclined though,,when flowering is over, to dig up and pot up for overwinterimg in the gh If your winters are cold.