Widely test distributed around the county wherever there are grassy places in sunny, sheltered locations. The Common Blue is not normally seen in mountainous areas and is less common inland than previously
Where to look
Although the Common Blue can be seen almost anywhere, except in the mountains, the best places are around the coast. Try the Workington windfarms, NX996303: Drigg Dunes SD050985: Askam Lots, SD208767: Hodbarrow, SD184783: South Walney, SD214622: Sandscale Haws, SD197755. Inland at Howe Ridding CWT Reserve, SD434882.
When to look
Mid-May to early September.