An unimproved Irish wildflower meadow, cut for hay in July and grazed lightly in winter, supports the widest butterfly community of any single habitat in the country. The plant list matters: Common Knapweed, Devil’s-bit Scabious, Field Scabious, Bird’s-foot Trefoil, Common Marjoram, and Meadow Vetchling between them feed most adult Irish butterflies.
Which butterflies you can see
Meadow Brown and Ringlet dominate July counts. Small Copper and Common Blue on the sunnier drier patches. Marsh Fritillary where Devil’s-bit Scabious grows in wet meadow sections. Small Tortoiseshell, Peacock, and Red Admiral visit for nectar from the boundary hedgerows.
Habitats where Irish butterflies live
Ireland’s butterfly fauna is shaped by nine broad habitat archetypes, from Burren limestone pavement to Wicklow upland heath. Each habitat supports a distinctive species assemblage.
Wildflower meadow
18 species regularly recorded
Knapweed, scabious, bird’s-foot trefoil, and marjoram feed adult butterflies from June to September.
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Oakwood
7 species regularly recorded
Killarney’s Atlantic oakwoods hold Speckled Wood, Silver-washed Fritillary, and Purple Hairstreak in July.
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Coastal machair
Marsh Fritillary stronghold
Sheskinmore in Donegal and other machair systems hold Marsh Fritillary on Devil’s-bit Scabious.
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Calcareous grassland
Burren specialities
Limestone pavement in the Burren supports Wall Brown, Common Blue, and Small Blue on lime-loving foodplants.
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Upland heath
Wicklow and Comeraghs
Small Heath, Large Heath, and Green Hairstreak on heather-and-bilberry heath.
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Hedgerow and garden
15 species regularly recorded
Nettles, buddleia, verbena, and hedgerow blackthorn support the commonest garden species.
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Every sighting counts
Butterfly Conservation Ireland and the National Biodiversity Data Centre track changes in Irish butterfly populations through recorder submissions. Add a sighting, and a named contributor will verify it within seven days.