The nine plants of Sambucus canadensis exceeded my wildest expectations. After two years, they outgrew their space in the garden this summer. My sense is that they can be as vigorous and prolific as bamboo, but more gentle and forgiving. They, along with the passion vine, turned the garden into a jungle.
The jungle, before culling begins.
Once the shrubs have been sufficiently topped, they must be dug up and transplanted to a more amenable situation.