Plant & Pest Diagnostics

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  American burnweed - Erechtites hieraciifolius

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  Annual bluegrass - Poa annua

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  Asiatic (common) dayflower - Commelina communis

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  Barnyardgrass - Echinochloa crus-galli

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  Brambles - Rubus spp.

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  British elecampane - Inula britannica

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  Broad-leaved helleborine - Epipactis helleborine

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  Broadleaf plantain – Plantago major

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  Buckhorn plantain – Plantago lanceolata

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  Bull thistle – Cirsium vulgare

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  Canada goldenrod – Solidago canadensis

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  Carpetweed – Mullogo verticillata

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  Common burdock - Arctium minus Bernh.

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  Common chickweed - Stellaria media (L.) Vill.

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  Common cottonwood – Populus deltoides

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  Common eveningprimrose – Oenothera biennis

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  Common groundsel – Senecio vulgaris

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  Common lambsquarters – Chenopodium album

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  Common mallow – Malva neglecta

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  Common milkweed – Asclepias syriaca

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  Common purslane – Portulaca oleracea

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  Common ragweed – Ambrosia artemisiifolia

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  Common St. Johnswort – Hypericum perforatum

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  Corn speedwell – Veronica arvensis

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  Curly dock – Rumex crispus

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  Dandelion – Taraxacum officinale

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  Eastern black nightshade – Solanum ptycanthum

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  Enchanter's nightshade - Circaea canadensis (L.) Hill

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  English ivy – Hedera helix

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  Fall panicum – Panicum dichotomiflorum

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  Field bindweed – Convolvulus arvensis

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  Field horsetail – Equisetum arvense

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  Field pennycress – Thlaspi arvense

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  Field violet – Viola arvensis

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  Giant Hogweed – Heracleum mantegazzianum

  Published on June 1, 2012
  

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  Green foxtail – Setaria viridis

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  Ground ivy (creeping Charlie) – Glechoma hederacea

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  Hairy bittercress – Cardamine hirsuta

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  Hairy galinsoga – Galinsoga quadriradiata

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  Healall – Prunella vulgaris

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  Hemp dogbane – Apocynum cannabinum

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  Henbit – Lamium amplexicaule

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  Hoary alyssum – Berteroa incana

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  Horsenettle – Solanum carolinense

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  Horseweed (marestail) – Conyza canadensis

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  Ivyleaf morningglory – Ipomoea hederacea

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  Japanese knotweed – Fallopia japonica

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  Jimsonweed – Datura stramonium

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  Johnsongrass – Sorghum halepense

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  Knawel – Scleranthus annuus

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  Large crabgrass – Digitaria sanguinalis

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  Liverworts – Division Marchantiophyta

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  Marsh yellowcress – Rorippa palustris

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  Mosses – Division Bryophyta

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  Motherwort - Leonurus cardiaca

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  Mouseear chickweed – Cerastium fontanum ssp. vulgare

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  Mugwort – Artemisia vulgaris

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  Northern willowherb – Epilobium ciliatum

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  Pennsylvania smartweed – Persicaria pensylvanica

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  Perennial sowthistle – Sonchus arvensis

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  Persian Speedwell - Veronica persica Poir.

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  Pineapple weed – Matricaria discoidea

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  Poison hemlock- Conium maculatum

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  Poison Ivy in Michigan – Toxicodendron radicans and rybergii

  Published on May 29, 2020
  

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  Pokeweed – Phytolacca americana

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  Prostrate knotweed – Polygonum aviculare

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  Prostrate pigweed – Amaranthus blitoides

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  Puncturevine – Tribulus terrestris

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  Purple Deadnettle-Lamium purpureum L.

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  Quackgrass- Elymus repens

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  Redroot pigweed – Amaranthus retroflexus

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  Redstem filaree – Erodium cicutarium

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  Shepherd’s purse – Capsella bursa-pastoris

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  Smooth groundcherry – Physalis longifolia var. subglabrata

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  Spotted knapweed – Centaurea stoebe

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  Staghorn sumac – Rhus typhina

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  Stinging nettle – Urtica dioica

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  Stinkgrass – Eragrostis cilianensis

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  Tall fescue - Lolium arundinacea

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  Tree-of-heaven – Ailanthus altissima

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  Tumble pigweed – Amaranthus albus

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  Velvetleaf – Abutilon theophrasti

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  Vetches – Vicia spp.

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  Virginia creeper – Parthenocissus quinquefolia

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  White campion (white cockle) – Silene latifolia

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  White clover – Trifolium repens

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  Whitlow grass - Draba verna L.

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  Wild buckwheat – Fallopia convolvulus

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  Wild carrot (Queen Anne’s lace) – Daucus carota

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  Wild grapes- Vitis spp.

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  Wild mustard – Sinapis arvensis

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  Wild Parsnip - Pastinaca sativa

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  Yellow nutsedge – Cyperus esculentus

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  Yellow rocket – Barbarea vulgaris

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  Yellow woodsorrel – Oxalis stricta