OIPC PLANT ASSESSMENT RESULTS
PDF Handout with this information is available HERE.
NOTES:
- In the case of plants of nursery importance, the scores below pertain only to the species itself. Cultivars are assessed separately and are not included in the species score, unless otherwise indicated.
- Some listed plants are also currently regulated as Invasive Species by the state of Ohio and banned from commercial sale and distribution. These are indicated with an asterisk (*) after their scientific name.
- Some problematic non-native species in Ohio are already regulated as Noxious Weeds. These are now being assessed with the OIPC protocol.
- The newest set of 8 plants assessed and listed on June 26, 2022 are presented in red font below. This begins a 6-month comment period regarding these species. If you have any comments or questions, please contact Theresa Culley.
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ASSESSMENT
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NAME
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SCORE
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DATE
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Excel Format
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PDF Format
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Invasive - score between 45 to 85:
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Purple Loosestrife (Lythrum salicaria)*
Reed Canary Grass (Phalaris arundinacea) Narrow-leaved Cattail (Typha angustifolia)* Hybrid Cattail (Typha x galuca)* Common Reed (Phragmites australis subsp. australis)* Eurasian Water-Milfoil (Myriophyllum spicatum)* Amur Honeysuckle (Lonicera maackii)* Garlic Mustard (Alliaria petiolata)* Autumn Olive (Elaeagnus umbellata)* Canada Thistle (Cirsium arvense) Morrow Honeysuckle (Lonicera morrowii)* Glossy Buckthorn (Frangula alnus)* Japanese Stiltgrass (Microstegium vimineum)* Japanese Knotweed (Fallopia japonica) Oriental Bittersweet (Celastrus orbiculatus) Spotted Knapweed (Centaurea stoebe spp. micranthos) Multiflora Rose (Rosa multiflora) Common Buckthorn (Rhamnus cathartica)* Smooth Bromegrass (Bromus inermis) Kudzu (Pueraria lobata)* Tree-of-Heaven (Ailanthus altissima)* Flowering Rush (Butomus umbellatus) Callery Pear (Pyrus calleryana) - all cultivars* Japanese Barberry (Berberis thunbergii) Bohemian Knotweed (Fallopia x bohemica) Giant Knotweed (Fallopia sachalinensis) Poison Hemlock (Conium maculatum) Tatarian Honeysuckle (Lonicera tatarica)* Yellow Sweet-Clover (Melilotus officials) White Sweet-Clover (Melilotus alba) Japanese Honeysuckle (Lonicera japonica)* Curly-Leaf Pondweed (Potamogeton crispus)* Cutleaf Teasel (Dipsacus laciniatus)* Chinese Silvergrass (Miscanthus sinensis) Wild parsnip (Pastinaca sativa) Russian Olive (Elaeagnus angustifolia)* Common Teasel (Dipsacus fullonum)* Black Swallow-Wort (Vincetoxicum nigrum)* Lesser Celandine (Ficaria verna / Ranunculus ficaria)* Bouncing Bet (Saponaria officinalis) Air Potato (Dioscorea polystachya) Winged Burning Bush (Euonymus alatus) Dame's Rocket (Hesperis matronalis)* Hairy Willow-herb (Epilobium hirsutum) Morning Glory (Ipomoea purpurea) Wintercreeper (Euonymus fortunei) Siberian Elm (Ulmus pumila) Amur corktree (Phellodendron amurense) |
77
74 73 73 70 69 65 63 63 63 63 61 60 60 59 59 58 58 58 56 56 56 54 54 53 53 53 51 51 50 49 49 49 49 49 48 47 47 47 47 46 46 45 45 45 45 45 45 |
July 20, 2016
July 1, 2015 July 20, 2016 July 20, 2016 July 1, 2015 July 1, 2015 May 1, 2014 May 1, 2014 May 1, 2014 Dec. 29, 2018 July 1, 2105 May 1, 2014 May 1, 2014 Aug. 10, 2017 May 1, 2014 July 20, 2016 May 1, 2014 May 1, 2014 July 1, 2015 July 20, 2016 May 1, 2014 July 1, 2015 May 1, 2014 July 20, 2016 Aug. 10, 2017 Aug. 10, 2017 Dec. 29, 2018 July 1, 2015 July 1, 2015 July 1, 2015 May 1, 2014 July 1, 2015 July 1, 2015 July 20, 2016 Dec. 29, 2018 July 1, 2015 July 1, 2015 July 1, 2015 May 1, 2014 Aug. 10, 2017 Aug. 10, 2017 Oct. 25, 2019 July 20, 2016 July 20, 2016 July 20, 2016 July 20, 2016 Aug. 10, 2017 Dec. 29, 2018 |
Scoring, References
Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References --- Scoring, References Scoring, References Scoring, References --- Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References --- --- --- Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References Scoring, References --- Scoring, References Scoring, References Scoring, References Scoring, References --- --- --- Scoring, References Scoring, References Scoring, References Scoring, References --- --- |
Potentially Invasive - score between 35 to 44:
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Common Privet (Ligustrum vulgare)
Mile-a-Minute Vine (Persicaria perfoliata) Periwinkle (Vinca minor) - NEW [Planted extensively as an ornamental groundcover but very difficult to control in natural sites;; not recommended for planting near natural areas] Small Carpgrass (Arthraxon hispidus) Lesser Naiad (Najas minor) Japanese Chaff Flower (Achyranthes japonica) Field Bindweed (Convolvulus arvensis) Common Burdock (Arcticum minus) Giant Hogweed (Heracleum mantegazzianum)* - NEW [This species so detrimental to human health that it is usually immediately removed when found; it is considered invasive in Europe] White Mulberry (Morus alba) Porcelainberry (Ampelopsis brevipedunculata) Butterfly Bush (Buddleja davidii) - NEW Sweet Autumn Clematis (Clematis terniflora) - NEW [Does well in the Ohio River Valley; an upcoming problem - do not plant if at all possible] Garden Yellowrocket (Barbara vulgaris) Ditch Lily (Hemerocallis fulva) Japanese meadowsweet (Spiraea japonica) - NEW Princess Tree (Paulownia tomentosa) Wineberry (Rubus phoenicolasius) Norway Maple (Acer platanoides) Ravenna Grass (Tripidium ravennae) Dog Rose (Rosa canina) |
44
43 42 42 42 42 42 41 40 40 40 38 37 37 37 36 36 36 36 36 35 |
May 1, 2014
May 1, 2014 June 26, 2022 Aug. 10, 2017 July 1, 2015 July 1, 2015 July 20, 2016 Dec. 29, 2018 June 26, 2022 May 1, 2014 May 1, 2014 June 26, 2022 June 26, 2022 July 1, 2015 July 20, 2016 June 26, 2022 July 20, 2016 July 20, 2016 July 20, 2016 Dec. 29, 2018 Aug. 10, 2017 |
Scoring, References Scoring, References --- --- Scoring, References Scoring, References Scoring, References --- --- Scoring, References Scoring, References --- --- Scoring, References Scoring, References --- Scoring, References Scoring, References Scoring, References --- --- |
Not Currently Invasive in Ohio - score between 0 to 34:
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English Ivy (Hedera helix) - NEW
Border Privet (Ligustrum obtusifolium) Dandelion (Taraxacum officinale) Star-of-Bethlehem (Ornithogalum umbellatum) European Wand Loosestrife (Lythrum virgatum)* - NEW [this species is difficult to tell apart from highly invasive L. salicaria & hybridizes easily; this species & its cultivars should not be planted.] Common Plantain (Plantago major) Giant Reed (Arundo donax) - NEW [not a significant problem in OH yet but is problematic south of OH] Goutweed (Aegopodium podagraria) Golden Raintree (Koelreuteria paniculata) Aralia (Eleutherococcus sieboldianus) Amur Maple (Acer ginnala) Hedge Maple (Acer campestre) Norway Maple 'Crimson King' (Acer platanoides) Big Blue Lilyturf (Liriope muscari) |
32
30 29 28 25 23 20 20 18 15 15 11 11 7 |
June 26, 2022
July 1, 2015 May 1, 2014 Dec. 29, 2018 June 26, 2022 May 1, 2014 June 26, 2022 Dec. 29, 2018 Dec. 29, 2018 July 20, 2016 July 1, 2015 July 1, 2015 July 20, 2016 July 20, 2016 |
For information about Invasive Aquatic Plants, please click HERE. For further information and to suggest new species for the team to assess, please contact Theresa Culley, Chair of the Plant Assessment Team at theresa.culley"at"uc.edu
Ohio Invasive Plants Council
c/o Department of Biological Sciences
University of Cincinnati
P.O. Box 210006
Cincinnati, OH 45221-0006
Ohio Invasive Plants Council
c/o Department of Biological Sciences
University of Cincinnati
P.O. Box 210006
Cincinnati, OH 45221-0006