Hello Grace and welcome!
Lovely to hear about your experiences of foraging. You are certainly not alone with regard to the park wardens in the Bos. They seem to be able to sniff out a forager from a 5km radius and are none to gentle with them. The Bos gets a lot of pressure from wild garlic pickers. It’s a beautiful place though.
I don’t know Noorderpark well but my little garden house is not so far away. Should meet up there sometime.
Most of the solution to the pollution problem is being aware of it and taking action as needed. Do they need more rubbish bins in the park or is it beyond that level?
Lovely to hear from you here and looking forward to meeting later! I’ll look at the link later today.
Best wishes,
Lynn