Posted: 07/05/2013 at 00:00
You sound like a guy who thinks a bit like I do. I need to find out how a plant might behave in my garden. Invasive plants are a big no regardless of their beauty. Euphorbia Fireglow, for example, is rampant and had to go. Some artemisias are also thugs that will colonise for many yards in a season.
You are right about crocosmia though I think there are newer varieties that are less vigorous