Hypericum 'Golden Tutsan'
I love the berries that are forming on a hypericum androsaemum 'Golden Tutsan' plant at my local nursery. I've never grown hypericums because of concerns about invasiveness.
Does anyone have experience growing 'Golden Tutsan"? Is it fairly invasive? And is it self-fertile, or would I need to plant several specimens in order to get those wonderful berries?