Should people be allowed to pick flowers in public parks?

A debate is blooming in Christchurch on whether or not people should be allowed to pick flowers in public parks. It follows some pretty brazen thefts in the Garden City, of not just flowers but entire plants. The local council have even decided to no longer plant tulips in one display because they're disappearing almost overnight. With spring knocking at the door and councils across the motu preparing their flower beds, we thought we'd dig into the story further. Is it ethical to pick a flower, or even allowed? Director of Christchurch's Botanical Gardens Wolfgang Bopp spoke to Anna Thomas.