Which plants don't respond to pruning before they flower?

Which plants don't respond to pruning before they flower?

Tracy DiSabato-Aust (Garden Designer and Author) gives expert video advice on: What is 'pruning'?; What variables are involved in pruning?; How much pruning does a plant need? and more...

Any plants that have a single stem, like cracosmias, delphinium, some of the foxgloves, don't respond as well to this pre-emptive pruning before flowering in an effort to delay bloom. This is because they have that single flowering stem that's unbranched. And so if we prune, we're basically removing that flowering stem.