Introduced species in Clermont County

50 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

50 species

Winter Aconite (Eranthis hyemalis)Winter AconiteEranthis hyemalis · Flowering plantsPhoto © Nicolas Schwab · CC BY-NC 4.0Early February to early May, middle week Mar 1–770 recordscommon snowdrop (Galanthus nivalis)common snowdropGalanthus nivalis · Flowering plantsPhoto © nvicens · CC BY-NC 4.0Early February to mid-March, middle week Mar 8–1421 recordsSiberian squill (Scilla siberica)Siberian squillScilla siberica · Flowering plantsPhoto © Kristian Peters · CC BY-NC-SA 4.0Late February to mid-April, middle week Mar 22–2829 recordslesser celandine (Ficaria verna)lesser celandineFicaria verna · Flowering plantsPhoto © Bernard Picton · CC BY 4.0Late February to late April, middle week Mar 29 – Apr 4117 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 recordsdame's rocket (Hesperis matronalis)dame's rocketHesperis matronalis · Flowering plantsPhoto © Wolfgang Bacher · CC BY-NC 4.0Mid-April to late June, middle week May 17–2356 recordswhite clover (Trifolium repens)white cloverTrifolium repens · Flowering plantsPhoto © Gennadiy Okatov · CC BY-NC 4.0Early May to early September, middle week Jun 7–1337 recordsJapanese Beetle (Popillia japonica)Japanese BeetlePopillia japonica · BeetlesPhoto © Ingrid Kaatz · CC BY-NC 4.0Late June to early August, middle week Jul 5–1141 recordsWestern Honey Bee (Apis mellifera)Western Honey BeeApis mellifera · Bees, wasps and antsPhoto © Lê Thanh Hoa · CC BY-NC 4.0Late March to mid-October, middle week Jul 5–1183 recordsSurprise Lily (Lycoris squamigera)Surprise LilyLycoris squamigera · Flowering plantsPhoto (c) Kim, Hyun-tae, some rights reserved (CC BY), uploaded by Kim, Hyun-tae · CC BY 4.0Mid-July to late August, middle week Aug 2–830 recordspurple loosestrife (Lythrum salicaria)purple loosestrifeLythrum salicaria · Flowering plantsPhoto © Nika Martynova · CC BY-NC 4.0Late June to early September, middle week Aug 9–1527 recordschicory (Cichorium intybus)chicoryCichorium intybus · Flowering plantsPhoto no rights reserved, uploaded by Алексей Ябс · CC0 1.0Late June to late September, middle week Aug 16–2254 recordsAmur honeysuckle (Lonicera maackii)Amur honeysuckleLonicera maackii · Flowering plantsPhoto © Andrew Conboy · CC BY 4.0No season shown114 recordsAsian bittersweet (Celastrus orbiculatus)Asian bittersweetCelastrus orbiculatus · Flowering plantsPhoto © Jeff Skrentny · CC BY-NC 4.0No season shown40 recordsAsian Lady Beetle (Harmonia axyridis)Asian Lady BeetleHarmonia axyridis · BeetlesPhoto © Paolo Mazzei · CC BY-NC 4.0No season shown70 recordsautumn olive (Elaeagnus umbellata)autumn oliveElaeagnus umbellata · Flowering plantsPhoto no rights reserved, uploaded by Shawn · CC0 1.0No season shown59 recordsborder privet (Ligustrum obtusifolium)border privetLigustrum obtusifolium · Flowering plantsPhoto © Sandy Wolkenberg · CC BY 4.0No season shown34 recordsBrown Marmorated Stink Bug (Halyomorpha halys)Brown Marmorated Stink BugHalyomorpha halys · True bugsPhoto © Kimberly · CC BY 4.0No season shown25 recordsCallery pear (Pyrus calleryana)Callery pearPyrus calleryana · Flowering plantsPhoto © Benjamin Smith · CC BY 4.0No season shown30 recordsCarolina horsenettle (Solanum carolinense)Carolina horsenettleSolanum carolinense · Flowering plantsPhoto © dillonmr · CC BY-NC 4.0No season shown98 recordscarpet bugle (Ajuga reptans)carpet bugleAjuga reptans · Flowering plantsPhoto © Анна · CC BY-NC 4.0No season shown21 recordsChinese bushclover (Lespedeza cuneata)Chinese bushcloverLespedeza cuneata · Flowering plantsPhoto © Roberto R. Calderón · CC BY-NC 4.0No season shown35 recordscommon dandelion (Taraxacum officinale)common dandelionTaraxacum officinale · Flowering plantsPhoto © Paul Reeves · CC BY-NC-SA 4.0No season shown20 recordsCoronilla variaCoronilla variaCoronilla varia · Flowering plantsPhoto © Jerry Oldenettel · CC BY-NC-SA 4.0No season shown27 recordscreeping Jenny (Lysimachia nummularia)creeping JennyLysimachia nummularia · Flowering plantsPhoto © miroslavamalovcova · CC BY-NC 4.0No season shown29 recordscreeping thistle (Cirsium arvense)creeping thistleCirsium arvense · Flowering plantsPhoto © Adja Gaye · CC BY-NC 4.0No season shown29 recordsfortune's spindle (Euonymus fortunei)fortune's spindleEuonymus fortunei · Flowering plantsPhoto © Douglas Goldman · CC BY-SA 4.0No season shown66 recordsgarlic mustard (Alliaria petiolata)garlic mustardAlliaria petiolata · Flowering plantsPhoto © Douglas Goldman · CC BY-SA 4.0No season shown75 recordsgreat mullein (Verbascum thapsus)great mulleinVerbascum thapsus · Flowering plantsPhoto © adrienne alms · CC BY-NC 4.0No season shown35 recordsground-ivy (Glechoma hederacea)ground-ivyGlechoma hederacea · Flowering plantsPhoto © viktorie_kolouchova · CC BY-NC 4.0No season shown76 recordsItalian arum (Arum italicum)Italian arumArum italicum · Flowering plantsPhoto © odenwaelder · CC BY-NC 4.0No season shown56 recordsJapanese barberry (Berberis thunbergii)Japanese barberryBerberis thunbergii · Flowering plantsPhoto © Mark Kluge · CC BY-NC 4.0No season shown20 recordsJapanese honeysuckle (Lonicera japonica)Japanese honeysuckleLonicera japonica · Flowering plantsPhoto © Michael Stanton · CC BY-NC 4.0No season shown50 recordsJapanese stiltgrass (Microstegium vimineum)Japanese stiltgrassMicrostegium vimineum · Flowering plantsPhoto © Derek Hudgins · CC BY-NC 4.0No season shown32 recordsLenten-rose (Helleborus orientalis)Lenten-roseHelleborus orientalis · Flowering plantsPhoto © Schnobby · CC BY-SA 4.0No season shown28 recordslesser periwinkle (Vinca minor)lesser periwinkleVinca minor · Flowering plantsPhoto © Miroslav Marić · CC BY-NC 4.0No season shown41 recordslow smartweed (Persicaria longiseta)low smartweedPersicaria longiseta · Flowering plantsPhoto © Brad Walker · CC BY-NC 4.0No season shown38 recordsmoth mullein (Verbascum blattaria)moth mulleinVerbascum blattaria · Flowering plantsPhoto © margiemick · CC BY-NC 4.0No season shown29 recordsmultiflora rose (Rosa multiflora)multiflora roseRosa multiflora · Flowering plantsPhoto © Douglas Goldman · CC BY-SA 4.0No season shown88 recordsOsage-orange (Maclura pomifera)Osage-orangeMaclura pomifera · Flowering plantsPhoto © hilliri · CC BY-NC 4.0No season shown36 recordsoxeye daisy (Leucanthemum vulgare)oxeye daisyLeucanthemum vulgare · Flowering plantsPhoto © Ben Zerante · CC BY-NC 4.0No season shown47 recordspoison hemlock (Conium maculatum)poison hemlockConium maculatum · Flowering plantsPhoto © Kate Bullock · CC BY-NC 4.0No season shown24 recordsRed Clover (Trifolium pratense)Red CloverTrifolium pratense · Flowering plantsPhoto © Hornbeam Arts · CC BY-NC 4.0No season shown37 recordsred deadnettle (Lamium purpureum)red deadnettleLamium purpureum · Flowering plantsPhoto © Katrina Winthrop · CC BY-NC 4.0No season shown47 recordsSmall White (Pieris rapae)Small WhitePieris rapae · Butterflies and mothsPhoto © Liu JimFood · CC BY-NC 4.0No season shown28 recordstree-of-heaven (Ailanthus altissima)tree-of-heavenAilanthus altissima · Flowering plantsPhoto © raviner · CC BY-NC 4.0No season shown28 recordswhite campion (Silene latifolia)white campionSilene latifolia · Flowering plantsPhoto © quandary · CC BY-NC 4.0No season shown33 recordswild carrot (Daucus carota)wild carrotDaucus carota · Flowering plantsPhoto © Nancy Phillips · CC BY-NC 4.0No season shown60 records

Showing 48 of 50

Missing records do not mean a species is absent.