Posted: 10/07/2014 at 13:38
I love Lena. One of the most beautiful brooms
I prune back as hard as I can but not not old wood. So, cut stems back to last leaves on green looking wood. I use plain old scissors to give a sharper cleaner cut.
Slightly late in pruning though. Has it just finished flowering shirtbutton?
Cannot advise about seed. Cuttimgs are quite difficult (for me anyway) but I have done it. I took cuttings when pruned back in spring. They look ok at moment.
Your situation sounds ideal but if in a raised bed keep it watered reasonably well.
My pruning also produces a nice, evergreen mounded bush when it's not I flower.