See these big ugly black tree protectors? Why are they there? Because last spring 13 of the 26 Mancana ash trees were nibbled by mice. Three of them irreparably. How do I know it was mice? I don’t. In fact, while waiting in line at my favourite greenhouse I over heard a guy lamenting the loss of his apple trees to vole nibble. Mice, voles, arrrghh. I felt his pain. We commiserated.