Clematis - Duchess of Edinburgh
I planted the Duchess of Edinbrugh clematis at the same time as two others from Taylors. The other two are flowering well but the Duchess of Edinburgh although growing well and is looking healthy hasn't flowered yet. I've got a note on my spread sheet that I should be chopping it down to half in July. Does this literally mean chop half the branches off so that it's half the height it was? Should I do this even if it hasn't flowered?