United Kingdom 
How much do I prune windlesham ruby broom and how much
10 Jul, 2015
Answers
You can cut back flowered stems by up to half but they don't like having more than that removed usually.
Owdboggy, oops, we must have crossed.
10 Jul, 2015
Brooms will not shoot from old wood,so you must leave a good few inches of the green/grey stems. Otherwise all I ever do with ours is to cut everything which has flowered back to about half its length.
10 Jul, 2015