Posted: 16/05/2014 at 19:04
Hello, Clive….sorry you find yourself in this situation (as if weddings aren’t stressful enough at the best of times). It’s easy to be clever with the benefit of hindsight, but I feel you could have been where you wanted to be with this, without the poly-tunnel. Had your seed been sown last October & overwintered in a coldframe, then planted out in mid-March, They would have been on schedule for your late June wedding.
Not sure I would be keen on your plan to cut off their heads. If they have only started to flower recently, I see no reason why they shouldn’t be in their prime by late June…I base this on the fact that when my own start flowering in mid-May, they are at their best in mid-July…..8 weeks approx. Certainly be diligent by cutting regularly until the big day.
The shorter stems you fear should not be a problem before early August.
Hope this helps.