Posted: 26/05/2013 at 12:03
Thanks obelixx and nutcutlet.
Lots to think about. We are wildlife gardeners, including wildlife ponds. I know all gardens and ponds are natural to a degree, but we try very hard to encourage wildlife and not to use chemicals, precisely for the reasons obelixx has put forward.
I guess it's back to good old manual labour re crocosmia!