Whenever I see the first cowslips of the year, I imagine myself back in a field near Sandyford, County Dublin, in the mid 1950s … Zoe Devlin has viewed her whole life through green-tinted glasses, describing herself as an `unofficial ambassador for weeds, wasps and wagtails’. What began as a childhood delight in wildflowers grew into a hobby, then blossomed into an enduring passion.