biostudies-literatureUnknown15(9)Pietrzak SInsect-flower relationships are among the most important ecological interactions occurring in the terrestrial ecosystem. In urban areas, such interactions are often disturbed or altered. However, few studies report floral affinities of butterflies in Europe, and our understanding of flower utilisation by butterflies in urban habitats is limited. Our study included long-term (2017-2022), qualitative observations and quantitative analyses of flower visits performed in 2021 and 2022 on five urban wastelands located in Łódź (Central Poland). We have recorded observations of 39 butterfly species on 81 species of plants (representing 19 families and 16 orders of plants). The majority of butterfly species were associated with many species of plants. We did not record tight associations with the cEcology and evolutione72088https://www.ebi.ac.uk/biostudies/studies/S-EPMC12434404biostudies-literatureBlooming Urban Table: Flower Resources for Butterflies in Small Wastelands of a Large European City.PMC12434404Pietrzak SPabis KfalseBlooming Urban Table: Flower Resources for Butterflies in Small Wastelands of a Large European City.Insect-flower relationships are among the most important ecological interactions occurring in the terrestrial ecosystem. In urban areas, such interactions are often disturbed or altered. However, few studies report floral affinities of butterflies in Europe, and our understanding of flower utilisation by butterflies in urban habitats is limited. Our study included long-term (2017-2022), qualitative observations and quantitative analyses of flower visits performed in 2021 and 2022 on five urban wastelands located in Łódź (Central Poland). We have recorded observations of 39 butterfly species on 81 species of plants (representing 19 families and 16 orders of plants). The majority of butterfly species were associated with many species of plants. We did not record tight associations with the c2025-01-01T00:00:00Z2025 Sep2026-06-03T03:02:21.328Z2026-04-23T03:13:56.101ZS-EPMC124344044095883910.1002/ece3.72088