The airy froth of Cow Parsley (Anthriscus sylvestris) spreads across the land at this time of year. Along roadsides, on the edge of woodland, in hedgerows, fields and footpaths: it's everywhere.
 It's a bit too rampant for most gardens though you might end up with some anyway. In fact the photo above was taken in my father's garden and it looks fine in the context of letting an area "go wild".