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Weeds & Invasive Plants

My goal is to have a profile on each of these with photos. This list includes plants only; invasive trees, shrubs, and vines are listed under the Trees, Shrubs, and Vines Inventory.

I created a listing of the weeds and invasives that folks in this area generally encounter. This ranks them from 1-3 with 1 being an invasive that needs immediate attention to 3 being weeds. This listing also explains why is it considered a 1, 2, or 3 and provides a treatment method that is known to be effective.

Alfalfa – Medicago sativa
Barnyardgrass – Echinochloa crus-galli
Bindweed, field – Convolvulus arvensis
Bindweed, Hedge – Calystegia sepium
Birds foot trefoil – Lotus corniculatus
Black Medick – Medicago lupulina
Bladder Campion – Silene vulgaris
Brome, Smooth — Bromus inermis
Burdock, Common – Arctium minus
Catnip — Nepeta cataria
Chicory – Cichorium intybus
Clover, Red – Trifolium pratense
Cocklebur, Common – Xanthium strumarium
Common St Johnswort – Hypericum perfolatum
Common Sow thistle – Sonchus aleraceus
Daisy, Ox eye – Leucanthemum vulgare
Dandelions, Common – Taraxacum officinale
Dock, Curly – Rumex crispus
Fieldcress, Field Pepper Weed – Lepidium campestre
Foxtail — Setaria spp
Garlic MustardAllaria petiolata
Goat’s Beard – Tragopogon dubius
Hedge parsley, Japanese – Torilis japonica
Hoary alyssum – Berteroa incana
Honeysuckle, Japanese — Lonicera japonica
Kenucky bluegrass – Poa pratensis
Knapweed, Spotted – Centaurea maculosa
Knotweed, Common – Polygonum aviculare
Lettuce, Prickly — Lactuca serriola
Lambs Quarters, Common – Chenopodium album
Motherwort — Leonurus cardiaca
Mouse-eared chickweed – Cerastium vulgatum
Mullein, Common – Verbascum thapsus
Mullein, Moth – Verbascum blattaria
Mustard, Black – Brassica nigra
Mustard, haresear — Cominga orientalis
Nettle, Stinging – Urtica dioica
Orchardgrass — Dactylis glomerata
Oxeye Daisy – Leucanthemum vulgare
Parsnip, Wild – Pastinaca sativa
Plantain, common – Plantago major
Plantain, Narrowleaf – Plantago lanceolata
Quackgrass — Elymus repens
Queen Anne’s LaceDaucus carotus
Ragweed, Common – Ambrosia artemisiifolia
Ragweed, Giant – Ambrosia trifida
Reed canarygrassPhalaris arundinacea – See also this comprehensive paper written by Craig Annen.
Shepherd’s Purse – Capsella bursa-pastoris
Spotted Knapweed – Centaurea maculosa
Spotted Lady’s Thumb – Persicaria maculata
St Johns Wort, Common — Hypericum perfolatum
Stinkweed – Thlapsi avense
Sumac, Smooth — Rhus glabra
Sweet Clover, White – Melilotus, yellow
Sweet Clover, Yellow – Melilotus officinalis
Thistle, Bull – Cirsium vulgare
Thistle, Canada – Cirsium arvense
Thistle, Nodding – Cirsium nutans