Introduced species in Summit County

144 species reported here that are listed as introduced

Listed as introduced by US-RIIS (the lower 48 states) or iNaturalist's Ohio checklist. Invasive species are those US-RIIS or Ohio's rules list as invasive, as causing or likely to cause harm. A species missing from this list is not necessarily native.

Sources: US-RIIS 2.0, iNaturalist's Ohio checklist and Ohio's invasive-species rules

144 species

common snowdrop (Galanthus nivalis)common snowdropGalanthus nivalis · Flowering plantsPhoto © nvicens · CC BY-NC 4.0Late February to mid-April, middle week Mar 15–2159 recordsWinter Aconite (Eranthis hyemalis)Winter AconiteEranthis hyemalis · Flowering plantsPhoto © Nicolas Schwab · CC BY-NC 4.0Mid-February to late April, middle week Mar 22–2826 recordsbird's-eye speedwell (Veronica persica)bird's-eye speedwellVeronica persica · Flowering plantsPhoto © liriodendron_tulipifera · CC BY-NC 4.0Early March to late May, middle week Apr 12–1847 recordscolt's-foot (Tussilago farfara)colt's-footTussilago farfara · Flowering plantsPhoto © snsergeevna · CC BY-NC 4.0Mid-March to early October, middle week Apr 12–18282 recordslesser celandine (Ficaria verna)lesser celandineFicaria verna · Flowering plantsPhoto © Bernard Picton · CC BY 4.0Late March to early May, middle week Apr 12–1876 recordswild daffodil (Narcissus pseudonarcissus)wild daffodilNarcissus pseudonarcissus · Flowering plantsPhoto © Gilles San Martin · CC BY-SA 4.0Late March to early May, middle week Apr 12–1823 recordsCommon Pill Woodlouse (Armadillidium vulgare)Common Pill WoodlouseArmadillidium vulgare · CrustaceansPhoto © Russell Pfau · CC BY-NC 4.0Late April to mid-October, middle week May 17–2348 recordscommon star-of-Bethlehem (Ornithogalum umbellatum)common star-of-BethlehemOrnithogalum umbellatum · Flowering plantsPhoto © Hannah Blumenfeld · CC BY-SA 4.0Early May to late May, middle week May 17–2387 recordsground-ivy (Glechoma hederacea)ground-ivyGlechoma hederacea · Flowering plantsPhoto © viktorie_kolouchova · CC BY-NC 4.0Early April to early October, middle week May 17–23207 recordsdame's rocket (Hesperis matronalis)dame's rocketHesperis matronalis · Flowering plantsPhoto © Wolfgang Bacher · CC BY-NC 4.0Late April to late June, middle week May 24–30382 recordsYellow Iris (Iris pseudacorus)Yellow IrisIris pseudacorus · Flowering plantsPhoto © roy pilcher · CC BY-NC 4.0Early May to early June, middle week May 24–30169 recordsGolden Oyster Mushroom (Pleurotus citrinopileatus)Golden Oyster MushroomPleurotus citrinopileatus · FungiPhoto © aarongunnar · CC BY 4.0Early May to early September, middle week Jun 7–13198 recordsmultiflora rose (Rosa multiflora)multiflora roseRosa multiflora · Flowering plantsPhoto © Douglas Goldman · CC BY-SA 4.0Early April to late October, middle week Jun 7–13385 recordsorange hawkweed (Pilosella aurantiaca)orange hawkweedPilosella aurantiaca · Flowering plantsPhoto © Emma-Louise Goffin · CC BY-NC 4.0Late May to late June, middle week Jun 7–1344 recordsGreen Pug (Pasiphila rectangulata)Green PugPasiphila rectangulata · Butterflies and mothsPhoto © crgillette · CC BY-NC 4.0Late May to late June, middle week Jun 14–2023 recordsbird's-foot trefoil (Lotus corniculatus)bird's-foot trefoilLotus corniculatus · Flowering plantsPhoto © Andreas Rockstein · CC BY-SA 4.0Late May to late August, middle week Jun 21–27162 recordsRed Clover (Trifolium pratense)Red CloverTrifolium pratense · Flowering plantsPhoto © Hornbeam Arts · CC BY-NC 4.0Early May to mid-October, middle week Jun 21–27177 recordsBroad-leaved helleborine (Epipactis helleborine)Broad-leaved helleborineEpipactis helleborine · Flowering plantsPhoto © Wolfgang Bettighofer · CC BY-NC 4.0Late May to early August, middle week Jun 28 – Jul 443 recordsCoronilla variaCoronilla variaCoronilla varia · Flowering plantsPhoto © Jerry Oldenettel · CC BY-NC-SA 4.0Late May to late September, middle week Jun 28 – Jul 4220 recordsDeptford pink (Dianthus armeria)Deptford pinkDianthus armeria · Flowering plantsPhoto © Valentin Hamon · CC BY-NC 4.0Early June to late August, middle week Jun 28 – Jul 464 recordsmoth mullein (Verbascum blattaria)moth mulleinVerbascum blattaria · Flowering plantsPhoto © margiemick · CC BY-NC 4.0Early June to late September, middle week Jun 28 – Jul 479 recordsOriental Beetle (Exomala (Exomala) orientalis)Oriental BeetleExomala (Exomala) orientalis · BeetlesPhoto © Tom Murray · CC BY-NC 4.0Late June to mid-July, middle week Jun 28 – Jul 423 recordsAsian Lady Beetle (Harmonia axyridis)Asian Lady BeetleHarmonia axyridis · BeetlesPhoto © Paolo Mazzei · CC BY-NC 4.0Mid-April to early November, middle week Jul 5–11237 recordsFourteen-spotted Lady Beetle (Propylea quatuordecimpunctata)Fourteen-spotted Lady BeetlePropylea quatuordecimpunctata · BeetlesPhoto © Katja Schulz · CC BY 4.0Late May to mid-August, middle week Jul 5–1130 recordsscarlet pimpernel (Lysimachia arvensis)scarlet pimpernelLysimachia arvensis · Flowering plantsPhoto © Douglas Goldman · CC BY-SA 4.0Early June to mid-September, middle week Jul 5–1128 recordsSmall White (Pieris rapae)Small WhitePieris rapae · Butterflies and mothsPhoto © Liu JimFood · CC BY-NC 4.0Late April to mid-October, middle week Jul 5–11183 recordsbittersweet nightshade (Solanum dulcamara)bittersweet nightshadeSolanum dulcamara · Flowering plantsPhoto © Alexander Baransky · CC BY-NC 4.0Late May to late September, middle week Jul 12–18158 recordsCommon St. John's Wort (Hypericum perforatum)Common St. John's WortHypericum perforatum · Flowering plantsPhoto © akolter · CC BY-NC 4.0Late June to mid-August, middle week Jul 12–1821 recordsConvolvulus sepiumConvolvulus sepiumConvolvulus sepium · Flowering plantsPhoto © Heather Pickard · CC BY-NC 4.0Mid-June to mid-August, middle week Jul 12–1823 recordsJapanese Beetle (Popillia japonica)Japanese BeetlePopillia japonica · BeetlesPhoto © Ingrid Kaatz · CC BY-NC 4.0Late June to late August, middle week Jul 12–18145 recordsbroad-leaved sweet pea (Lathyrus latifolius)broad-leaved sweet peaLathyrus latifolius · Flowering plantsPhoto © John Brew · CC BY 4.0Early June to mid-September, middle week Jul 19–25111 recordsplains coreopsis (Coreopsis tinctoria)plains coreopsisCoreopsis tinctoria · Flowering plantsPhoto © jcmattson · CC BY-NC 4.0Early July to mid-September, middle week Jul 19–2533 recordsalder buckthorn (Frangula alnus)alder buckthornFrangula alnus · Flowering plantsPhoto © Sten Porse · CC BY-SA 4.0Early May to late October, middle week Jul 26 – Aug 1203 recordsCarrot Seed Moth (Sitochroa palealis)Carrot Seed MothSitochroa palealis · Butterflies and mothsPhoto © AnneTanne · CC BY-NC 4.0Mid-July to mid-August, middle week Jul 26 – Aug 123 recordsEuropean Woolcarder Bee (Anthidium manicatum)European Woolcarder BeeAnthidium manicatum · Bees, wasps and antsPhoto © Pierre Bornand · CC BY-NC 4.0Mid-June to early September, middle week Aug 2–828 recordspurple loosestrife (Lythrum salicaria)purple loosestrifeLythrum salicaria · Flowering plantsPhoto © Nika Martynova · CC BY-NC 4.0Late June to early September, middle week Aug 2–8236 recordsWestern Honey Bee (Apis mellifera)Western Honey BeeApis mellifera · Bees, wasps and antsPhoto © Lê Thanh Hoa · CC BY-NC 4.0Late April to early October, middle week Aug 2–8469 recordswild carrot (Daucus carota)wild carrotDaucus carota · Flowering plantsPhoto © Nancy Phillips · CC BY-NC 4.0Late June to early October, middle week Aug 2–8322 recordsAsiatic dayflower (Commelina communis)Asiatic dayflowerCommelina communis · Flowering plantsPhoto © NotAnonymous · CC BY-SA 4.0Mid-June to early October, middle week Aug 9–1523 recordschicory (Cichorium intybus)chicoryCichorium intybus · Flowering plantsPhoto no rights reserved, uploaded by Алексей Ябс · CC0 1.0Late June to mid-October, middle week Aug 9–15346 recordscommon hibiscus (Hibiscus syriacus)common hibiscusHibiscus syriacus · Flowering plantsPhoto (c) Kai Yan, Joseph Wong, some rights reserved (CC BY-NC-SA) · CC BY-NC-SA 4.0Late June to mid-October, middle week Aug 9–1578 recordscommon soapwort (Saponaria officinalis)common soapwortSaponaria officinalis · Flowering plantsPhoto © ingakom · CC BY-NC 4.0Early July to mid-October, middle week Aug 9–1541 recordslow smartweed (Persicaria longiseta)low smartweedPersicaria longiseta · Flowering plantsPhoto © Brad Walker · CC BY-NC 4.0Mid-June to late October, middle week Sep 20–2689 recordswinged euonymus (Euonymus alatus)winged euonymusEuonymus alatus · Flowering plantsLate in its seasonPhoto © cathytaylormt · CC BY-NC 4.0Early May to mid-November, middle week Sep 27 – Oct 3106 recordsAmur honeysuckle (Lonicera maackii)Amur honeysuckleLonicera maackii · Flowering plantsPhoto © Andrew Conboy · CC BY 4.0No season shown338 recordsAnnual Honesty (Lunaria annua)Annual HonestyLunaria annua · Flowering plantsPhoto © Joe · CC BY-NC 4.0No season shown21 recordsAnt-Spider (Myrmarachne formicaria)Ant-SpiderMyrmarachne formicaria · SpidersPhoto © Pierre Bornand · CC BY-NC 4.0No season shown21 recordsAsian Beauty (Radulomyces copelandii)Asian BeautyRadulomyces copelandii · FungiPhoto © Bea Leiderman · CC BY 4.0No season shown25 records

Showing 48 of 144

Missing records do not mean a species is absent.