Introduced species in Montgomery County

53 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

53 species

common snowdrop (Galanthus nivalis)common snowdropGalanthus nivalis · Flowering plantsPhoto © nvicens · CC BY-NC 4.0Late February to late March, middle week Mar 8–1422 recordsWinter Aconite (Eranthis hyemalis)Winter AconiteEranthis hyemalis · Flowering plantsPhoto © Nicolas Schwab · CC BY-NC 4.0Early February to late April, middle week Mar 8–1459 recordsSiberian squill (Scilla siberica)Siberian squillScilla siberica · Flowering plantsPhoto © Kristian Peters · CC BY-NC-SA 4.0Early March to early April, middle week Mar 29 – Apr 435 recordslesser celandine (Ficaria verna)lesser celandineFicaria verna · Flowering plantsPhoto © Bernard Picton · CC BY 4.0Early March to late April, middle week Apr 5–11113 recordscommon star-of-Bethlehem (Ornithogalum umbellatum)common star-of-BethlehemOrnithogalum umbellatum · Flowering plantsPhoto © Hannah Blumenfeld · CC BY-SA 4.0Mid-April to mid-May, middle week May 3–947 recordsNarcissus Bulb Fly (Merodon (Albimerodon) equestris)Narcissus Bulb FlyMerodon (Albimerodon) equestris · FliesPhoto © S. Rae · CC BY 4.0Early May to late May, middle week May 17–2320 recordspurple loosestrife (Lythrum salicaria)purple loosestrifeLythrum salicaria · Flowering plantsPhoto © Nika Martynova · CC BY-NC 4.0Late June to early September, middle week Jul 19–2524 recordsSmall White (Pieris rapae)Small WhitePieris rapae · Butterflies and mothsPhoto © Liu JimFood · CC BY-NC 4.0Late March to mid-October, middle week Aug 16–22105 recordschicory (Cichorium intybus)chicoryCichorium intybus · Flowering plantsPhoto no rights reserved, uploaded by Алексей Ябс · CC0 1.0Late June to late October, middle week Sep 6–1290 recordsAmur honeysuckle (Lonicera maackii)Amur honeysuckleLonicera maackii · Flowering plantsPhoto © Andrew Conboy · CC BY 4.0No season shown254 recordsAsian bittersweet (Celastrus orbiculatus)Asian bittersweetCelastrus orbiculatus · Flowering plantsPhoto © Jeff Skrentny · CC BY-NC 4.0No season shown32 recordsAsian Lady Beetle (Harmonia axyridis)Asian Lady BeetleHarmonia axyridis · BeetlesPhoto © Paolo Mazzei · CC BY-NC 4.0No season shown131 recordsautumn olive (Elaeagnus umbellata)autumn oliveElaeagnus umbellata · Flowering plantsPhoto no rights reserved, uploaded by Shawn · CC0 1.0No season shown45 recordsbittersweet nightshade (Solanum dulcamara)bittersweet nightshadeSolanum dulcamara · Flowering plantsPhoto © Alexander Baransky · CC BY-NC 4.0No season shown29 recordsBrown Marmorated Stink Bug (Halyomorpha halys)Brown Marmorated Stink BugHalyomorpha halys · True bugsPhoto © Kimberly · CC BY 4.0No season shown90 recordsCarolina horsenettle (Solanum carolinense)Carolina horsenettleSolanum carolinense · Flowering plantsPhoto © dillonmr · CC BY-NC 4.0No season shown38 recordscommon buckthorn (Rhamnus cathartica)common buckthornRhamnus cathartica · Flowering plantsPhoto © Robert Flogaus-Faust · CC BY 4.0No season shown27 recordscommon dandelion (Taraxacum officinale)common dandelionTaraxacum officinale · Flowering plantsPhoto © Paul Reeves · CC BY-NC-SA 4.0No season shown53 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 4.0No season shown27 recordscommon ivy (Hedera helix)common ivyHedera helix · Flowering plantsPhoto © Marianna Boi · CC BY 4.0No season shown48 recordsCoronilla variaCoronilla variaCoronilla varia · Flowering plantsPhoto © Jerry Oldenettel · CC BY-NC-SA 4.0No season shown35 recordscreeping thistle (Cirsium arvense)creeping thistleCirsium arvense · Flowering plantsPhoto © Adja Gaye · CC BY-NC 4.0No season shown35 recordscutleaf teasel (Dipsacus laciniatus)cutleaf teaselDipsacus laciniatus · Flowering plantsPhoto © Lily Rice · CC BY-NC 4.0No season shown28 recordsdame's rocket (Hesperis matronalis)dame's rocketHesperis matronalis · Flowering plantsPhoto © Wolfgang Bacher · CC BY-NC 4.0No season shown32 recordsDomestic Cat (Felis catus)Domestic CatFelis catus · MammalsPhoto © Von.grzanka · CC BY-SA 4.0No season shown25 recordsEuropean Carp (Cyprinus carpio)European CarpCyprinus carpio · FishesPhoto © Austin D West · CC BY-NC 4.0No season shown33 recordsEuropean Paper Wasp (Polistes dominula)European Paper WaspPolistes dominula · Bees, wasps and antsPhoto © Юрий Данилевский (Yuriy Danilevsky) · CC BY 4.0No season shown35 recordsEuropean Starling (Sturnus vulgaris)European StarlingSturnus vulgaris · BirdsPhoto © Shiva Shenoy · CC BY 4.0No season shown52 recordsfortune's spindle (Euonymus fortunei)fortune's spindleEuonymus fortunei · Flowering plantsPhoto © Douglas Goldman · CC BY-SA 4.0No season shown59 recordsgarlic mustard (Alliaria petiolata)garlic mustardAlliaria petiolata · Flowering plantsPhoto © Douglas Goldman · CC BY-SA 4.0No season shown77 recordsgreat mullein (Verbascum thapsus)great mulleinVerbascum thapsus · Flowering plantsPhoto © adrienne alms · CC BY-NC 4.0No season shown62 recordsground-ivy (Glechoma hederacea)ground-ivyGlechoma hederacea · Flowering plantsPhoto © viktorie_kolouchova · CC BY-NC 4.0No season shown60 recordshenbit deadnettle (Lamium amplexicaule)henbit deadnettleLamium amplexicaule · Flowering plantsPhoto © Hernán A. Santibáñez G. · CC BY-NC 4.0No season shown28 recordsHouse Sparrow (Passer domesticus)House SparrowPasser domesticus · BirdsPhoto © Ximo Galarza · CC BY-NC-SA 4.0No season shown85 recordsJapanese Beetle (Popillia japonica)Japanese BeetlePopillia japonica · BeetlesPhoto © Ingrid Kaatz · CC BY-NC 4.0No season shown45 recordslesser periwinkle (Vinca minor)lesser periwinkleVinca minor · Flowering plantsPhoto © Miroslav Marić · CC BY-NC 4.0No season shown43 recordslow smartweed (Persicaria longiseta)low smartweedPersicaria longiseta · Flowering plantsPhoto © Brad Walker · CC BY-NC 4.0No season shown27 recordsmoth mullein (Verbascum blattaria)moth mulleinVerbascum blattaria · Flowering plantsPhoto © margiemick · CC BY-NC 4.0No season shown25 recordsmultiflora rose (Rosa multiflora)multiflora roseRosa multiflora · Flowering plantsPhoto © Douglas Goldman · CC BY-SA 4.0No season shown82 recordsOsage-orange (Maclura pomifera)Osage-orangeMaclura pomifera · Flowering plantsPhoto © hilliri · CC BY-NC 4.0No season shown100 recordsoxeye daisy (Leucanthemum vulgare)oxeye daisyLeucanthemum vulgare · Flowering plantsPhoto © Ben Zerante · CC BY-NC 4.0No season shown21 recordspoison hemlock (Conium maculatum)poison hemlockConium maculatum · Flowering plantsPhoto © Kate Bullock · CC BY-NC 4.0No season shown38 recordsRathke's Woodlouse (Trachelipus rathkii)Rathke's WoodlouseTrachelipus rathkii · CrustaceansPhoto © Z · CC BY 4.0No season shown20 recordsRed Clover (Trifolium pratense)Red CloverTrifolium pratense · Flowering plantsPhoto © Hornbeam Arts · CC BY-NC 4.0No season shown100 recordsred deadnettle (Lamium purpureum)red deadnettleLamium purpureum · Flowering plantsPhoto © Katrina Winthrop · CC BY-NC 4.0No season shown94 recordsribwort plantain (Plantago lanceolata)ribwort plantainPlantago lanceolata · Flowering plantsPhoto © Miroslav Marić · CC BY-NC 4.0No season shown44 recordstree-of-heaven (Ailanthus altissima)tree-of-heavenAilanthus altissima · Flowering plantsPhoto © raviner · CC BY-NC 4.0No season shown29 recordsWestern Honey Bee (Apis mellifera)Western Honey BeeApis mellifera · Bees, wasps and antsPhoto © Lê Thanh Hoa · CC BY-NC 4.0No season shown173 records

Showing 48 of 53

Missing records do not mean a species is absent.