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Weed Response to Selected Herbicides

Filed Under:
Publication Number: P1934
View as PDF: P1934.pdf

Susceptibility of common weeds to control by phenoxy and some other systemic herbicides

Plant name

Type

Control1

2,4-D

MCPA

Mecoprop

2,4-DB

Dicamba

Picloram

Amitrole

Glyphosate

Alexandergrass (Brachiaria plantaginea)

Annual

             

E

Alligatorweed (Alternanthera philoxeroides)

Perennial

P

N

           

Amaranth,** green (Amaranthus hybridus)

Annual

E

E

 

E

E

E

E

E

Amaranth, palmer (A. palmeri)

Annual

E

E

   

E

E

E

E

Amaranth, spiny (A. spinosus)

Annual

E

G

 

G

E

E

E

E

Ammannia, pink (Ammania teres)

Annual

     

E

E

E

 

E

Amorpha, leadplant* (Amorpha, canescens)

Perennial

       

F

   

G

Angelica, purplestem (Angelica atropurpurea)

Perennial

G

P

 

F

G

E

G

E

Anoda, spurred (Anoda cristata)

Annual

G

G

 

F

G

E

E

E

Arrowgrass, seaside (Triglochin maritima)

Perennial

F

     

G

E

F

E

Arrowhead, annual (Sagittaria calycina)

Annual

E

E

 

E

G

E

F

E

Arrowhead, perennial (S. longiloba)

Perennial

F

F

         

E

Aster, many-flowered (Aster ericoides)2

Perennial

G

     

E

E

G

G

Aster, slender (A. exilis)

Perennial

E

E

 

G

E

E

   

Aster, smooth (A. laevis)

Perennial

G

F

 

F

G

E

E

G

Aster, white heath (A. pilosus)

Perennial

F

   

N

F

E

G

G

Balloonvine (Cardiospermum halicacabum)

Perennial

G

           

E

Baneberry, red (Actaea rubra)

Perennial

       

F

G

 

G

Barley, little (Hordeum pusillum)

Annual

N

N

 

N

N

N

E

E

Beardgrass, bushy (Andropogon glomeratus)

Perennial

N

N

 

N

N

N

   

Bedstraw, cleavers (Gallium aparine)

Perennial

P

N

F

N

G

E

E

E

Beeplant, Rocky Mountain (Cleome serrulate)

Annual

F

             

Beggarticks, bearded (Bidens aristosa)

Biennial

E

E

 

E

E

E

E

E

Beggarticks, devils (B. frondosa)

Annual

E

E

   

E

E

E

E

Beggarticks, leafbract (B. comosa)

Annual

E

E

 

E

E

E

E

E

Beggarticks, nodding (B. cernua)

Annual

E

E

 

E

E

E

E

E

Bellflower, creeping* (Campanula rapunculoides)

Perennial

P

P

 

P

F

E

F

E

Bentgrass, creeping (Agrostis stolonifera)

Perennial

N

N

 

N

N

N

G

E

Bindweed, field (Convolvulus arvensis)

Perennial

G

G

F

F

G

G

P

G

Bindweed, hedge (C. sepium)

Perennial

G

G

   

G

G

P

G

Bittercress, hairy (Cardamine hirsuta)

Annual

G

E

 

E

E

E

E

E

Blackeyed susan* (Rudbeckia serotina)

Perennial

G

     

E

E

E

E

Bouncingbet (Saponaria officinalis)

Perennial

P

N

 

N

G

F

E

F

Bracken (Pteridium aquilinum)

Perennial

N

N

P

N

G

F

P

G

Brome, downy (Bromus tectorum)

Annual

N

N

 

N

N

P

E

E

Brome, field (B. arvenis)

Annual

N

N

 

N

N

N

E

G

Brome, Japanese (B. japonicus)

Annual

N

N

 

N

N

P

E

E

Broomsedge (Andropogon virginicus)

Perennial

N

N

 

N

N

N

F

E

Broomweed (Gutierrezia dracunculoides)2

Annual

G

     

G

E

F

F

Buffalobur* (Solanum rostratum)

Annual

F

P

 

P

F

G

F

G

Bullnettle (Cnidoscolus stimulosus)

Perennial

G

F

   

G

G

G

G

Bulrush (Scirpus spp.)

Perennial

F

F

 

N

       

Burcucumber (Sicyos angulatus)

Annual

P

F

   

P

E

E

E

Burdock, common (Arctium minus)

Biennial

E

E

 

E

E

E

F

G

Bur-head (Echinodorus cordifolious)

Annual

E

E

           

Burroweed* (Haplopappus tenuisectus)

Perennial

G

     

E

E

   

Buttercup, celery leaf (Ranunculus sceleratus)

Annual

F

 

G

         

Buttercup, corn (R. arvensis)

Annual

G

E

G

E

F

F

G

 

Buttercup, creeping (R. repens)

Perennial

G

E

F

G

G

F

G

 

Canarygrass, reed (Pharlaris arundinacea)

Perennial

N

N

 

N

N

N

G

G

Carpetgrass (Axonopus affinis)

Perennial

F

P

 

P

F

F

E

E

Carpetweed (Mollugo verticillate)

Annual

E

 

G

E

E

E

E

E

Carrot, wild (Daucus carota)

Biennial

F

F

P

F

G

G

E

G

Catsear, spotted (Hypochoeris radicata)

Perennial

G

E

 

E

E

E

E

 

Cattail, broadleaf (Typha latifolia)

Perennial

F

P

 

P

G

G

G

G

Cattail, narrowleaf (T. angustifolia)

Perennial

F

P

 

P

   

G

G

Chamomile, corn (Anthemis arvensis)

Biennial

F

G

 

G

G

E

E

E

Cheat (Bromus secalinus)

Annual

N

N

 

N

N

F

E

E

Chervil, wild (Chaerophyllum tainturieri)

Annual

 

F

   

G

   

E

Chess, hairy (Bromus commutatus)

Annual

N

N

 

N

N

N

E

E

Chickweed, common (Stellaria media)

Annual

F

P

E

F

E

E

G

E

Chickweed, field (Cerastium arvense)

Perennial

F

P

 

P

E

E

F

E

Chickweed, mouseear (C. vulgatum)

Perennial

F

P

E

P

E

E

G

E

Chickweed, sticky (C. viscosum)

Annual

G

G

 

E

E

E

E

E

Chicory (Cichorium intybus)

Perennial

G

G

P

F

E

E

G

G

Cinquefoil, common* (Potentilla canadensis)

Perennial

G

F

   

E

E

E

E

Cinquefoil, sulfur (P. recta)

Perennial

G

F

   

E

E

E

E

Clover, hop (Trifolium agrarium)

Annual

F

 

F

 

G

   

E

Clover, white (T. repens)

Perennial

F

 

E

 

E

   

F

Cockle, corn (Agrostemma githago)

Annual

P

P

 

N

G

E

E

E

Cocklebur, common* (Xanthium pensylvanicum)

Annual

E

F

E

G

E

E

E

E

Coffeeweed* (Daubentonia texana)

Woody

E

     

E

E

 

E

Coreopsis, plains (Coreopsis tinctoria)

Annual

E

G

 

E

E

G

E

E

Cornflower, bachelor’s button (Centaurea cyanus)

Annual

E

     

E

E

E

E

Costmary* (Chrysanthemum balsamita)

Perennial

F

F

 

F

F

E

G

G

Cranebill, cutleaf (Geranium dissectum)

Annual

 

E

E

         

Creeper, Virginia (Parthenocissus quinquefolia)

Woody

P

P

 

P

F

F

F

G

Creeper, mouseear (Arabidopsis thaliana)

Annual

E

E

E

E

E

E

E

E

Croton, wooly (C. capitatus)

Annual

E

   

E

E

E

   

Crown vetch (Coronilla varia)

Perennial

G

G

 

G

E

E

G

G

Cudweed (Gnaphalium peregrinum)

Annual

N

     

E

E

 

G

Daisy, oxeye (Chrysanthemum leucanthemum)

Perennial

F

F

 

N

E

E

G

G

Dallisgrass (Paspalum dilatatum)

Perennial

N

N

 

N

N

N

G

F

Dandelion (Taraxacum officinale)

Perennial

E

E

F

G

E

E

G

G

Darnel (Lolium temulentum)

Annual

             

E

Dayflower (Commelina communis)

Annual

F

G

 

P

F

P

E

E

Deadnettle, red (Lamium purpureum)

Annual

P

P

 

P

E

E

E

E

Devil’s claw (Proboscidea louisianica)

Annual

E

     

E

E

 

E

Dock, broadleaf (Rumex obstusifolius)

Perennial

F

F

F

F

E

E

E

E

Dock, curly (R. crispus)

Perennial

F

F

F

F

E

E

G

G

Dock, fiddle (R. pulcher)

Perennial

E

 

F

 

G

E

E

E

Dock, pale (R. latissimus)

Perennial

G

G

F

P

G

E

E

E

Dodder, largeseed (Cuscuta indecora)

Annual

P

N

 

N

     

E

Dodder, smallseed alfalfa (C. pentagona)

Annual

P

N

 

N

       

Dogbane, hemp (Apocynum cannabinum)

Perennial

F

P

 

P

F

G

G

G

Duckweed, common (Lemna minor)

Annual

P

     

N

N

G

N

Eveningprimrose, common (Oenothera biennis)

Biennial

E

     

E

E

 

E

False boneset (Kuhnia eupatorioldes)

Perennial

G

F

 

F

F

E

G

G

Fennel, dog (Eupatorium capillifolium)

Annual

G

   

N

E

E

 

G

Fescue, sixweeks (Vulpia octoflora)

Annual

N

N

 

N

N

N

E

E

Fieldcress, yellow (Rorippa sylvestris)

Perennial

G

F

 

F

F

G

G

G

Fleabane, annual (Erigeron annuus)

Annual

F

F

 

E

E

E

E

E

Fleabane, rough (E. strigosus)

Annual

G

     

E

E

E

E

Florida betony (Stachys floridana)

Perennial

P

     

F

G

E

G

Foxtail, meadow* (Alopecurus pratensis)

Perennial

N

N

 

N

P

N

E

E

Galinsoga, hairy (Galinsoga ciliata)

Annual

G

E

   

E

E

G

E

Galinsoga, smallflower (G. parviflora)

Annual

E

G

 

G

E

E

E

E

Garlic, wild (Allium vineale)

Perennial

F

P

 

P

F

G

F

P

Geranium, Carolina (Geranium carolinianum)

Annual

G

E

 

E

E

E

E

E

Goldenrod (Solidago spp.)

Perennial

F

 

F

 

G

E

P

E

Gooseweed (Sphenoclea zeylanica)

Annual

F

P

   

N

     

Gourd, buffalo (Curcurbita foetidissima)

Perennial

P

             

Gromwell* (Lithospermum officinale)

Perennial

N

     

E

     

Groundcherry,* clammy (Physalis heterophylla)

Perennial

N

   

N

E

E

   

Groundivy (Glechoma hederacea)

Perennial

F

P

F

N

G

E

 

G

Groundsel, cressleaf (Senecio glabellus)

Annual

E

E

 

G

     

E

Hairgrass, silver (Aira caryophyllea)

Annual

N

N

 

N

N

N

 

E

Healall (Prunella vulgaris)

Perennial

G

N

P

N

G

   

G

Henbit (Lamium amplexicaule)

Annual

P

P

G

P

E

E

E

E

Hogpeanut (Amphicarpa bracteate)

Perennial

E

             

Hollycock (Althea rosea)

Biennial

E

G

 

G

G

E

G

E

Honeysuckle (Lonicera japonica)

Perennial

F

E

   

G

E

E

G

Horehound, white (Marrubium vulgare)

Perennial

E

     

G

G

   

Horsenettle, Carolina (Solanum carolinense)

Perennial

P

N

 

P

F

G

F

G

Horsetail, field (Equisetum arvense)2

Perennial

P

F

P

 

N

F

G

P

Horseweed, marestail (Conyza canadensis)

Annual

F

F

 

F

E

E

E

E

Indiantobacco (Lobelia inflata)

Annual

F

     

E

     

Iris, Rocky Mountain* (Iris missouriensis)

Perennial

F

             

Ironweed, western* (Vernonia baldwinii)

Perennial

F

   

P

G

E

 

E

Ivy, English (Hedera helix)

Perennial

       

E

E

E

F

Jerusalem artichoke (Helianthus tuberosus)

Perennial

F

     

P

F

P

F

Jewelweed* (Impatiens pallida)

Annual

E

     

E

E

E

E

Jimsonweed (Datura stramonium)

Annual

P

P

 

P

F

E

G

E

Johnsongrass (Sorghum halepense)

Perennial

N

N

 

N

N

N

P

E

Knawel (Scleranthus annuus)

Annual

N

N

G

 

E

E

E

E

Knotweed, prostrate (Polygonum paviculare)

Annual

P

P

 

P

E

E

G

E

Kudzu (Pueraria lobata)

Perennial

F

F

   

G

E

G

G

Lambsquarters (Chenopodium album)

Annual

E

E

E

E

E

E

E

E

Lespedeza (Lespedeza striata)

Annual

P

 

G

 

G

   

G

Lespedeza, sericea (L. cuneata)

Perennial

P

 

G

 

G

   

F

Lettuce, blue* (Lactuca pulchella)

Perennial

F

F

 

F

G

E

F

G

Lettuce, wild (L. serriola)

Annual

E

 

E

 

E

E

E

E

Maidencane (Panicum hemitomon)

Perennial

             

E

Marshelder* (Iva xanthifolia)

Annual

E

G

 

E

E

E

G

E

Mayweed, dogfennel (Anthemis cotula)

Annual

F

P

 

N

E

E

 

E

Medic, black (Medicago lupulina)

Annual

F

F

G

P

G

E

G

G

Mexican weed (Caperonia palustris)

Annual

F

F

 

N

     

E

Mexicantea (Chenopodium ambrosioides)

Annual

E

E

 

E

E

E

E

E

Milkweed

Perennial

G

   

N

P

G

G

G

Milkweed, butterfly (Asclepias tuberosa)

Perennial

P

N

 

P

P

G

G

G

Milkweed, eastern whorled (A. verticillata)

Perennial

N

N

 

N

G

F

F

G

Milkweed, green (A. viridiflora)

Perennial

P

N

 

P

P

G

F

G

Milkweed, purple (A. purpurascens)

Perennial

P

N

 

P

P

G

E

G

Milkweed, swamp (A. incarnata)

Perennial

P

N

 

N

P

G

F

G

Moneywort (Lysimachia nummularia)

Perennial

E

           

G

Morningglory, bigroot (Ipomoea pandurate)

Perennial

F

P

 

N

P

F

P

F

Morningglory, common (I. purpurea)

Annual

E

   

E

E

E

E

E

Morningglory, ivyleaf (I. hederacea)

Annual

E

   

E

E

E

E

E

Mudplantain (Heteranthera limosa)

Perennial

E

G

P

F

       

Mugwort (Artemisia vulgaris)

Perennial

P

N

   

F

G

 

F

Mullein, common (Verbascum Thapsus)

Biennial

P

P

 

N

G

E

G

G

Mullein, moth (V. blattaria)

Biennial

F

     

F

G

G

E

Mustard, black (Brassica nigra)

Annual

E

E

 

E

E

G

G

E

Mustard, Indian (Brassica juncea)

Annual

E

E

 

E

E

E

E

E

Mustard, treacle (Erysimum repandum)

Annual

G

G

   

F

     

Nettle, stinging (Urtica dioica)

Perennial

G

     

G

G

G

G

Nightshade, black (Solanum nigrum)

Annual

F

F

N

F

G

E

G

E

Nightshade, silverleaf (S. elaeagnifolium)

Perennial

P

     

G

E

F

E

Nimblewill (Muhlenbergia schreberi)

Perennial

N

N

 

N

N

N

G

E

Nutsedge, purple (Cyperus rotundus)

Perennial

P

N

 

N

P

P

F

G

Nutsedge, yellow (C. esculentus)

Perennial

F

N

 

N

N

F

F

F

Onion, wild (Allium canadense)

Perennial

F

P

 

P

F

P

F

F

Partridgepea (Cassia chamoccrista)

Annual

E

E

   

E

E

 

E

Paspalum, field (Paspalum leave)

Perennial

             

E

Passionflower, maypop (Passiflora incarnata)

Perennial

F

     

F

F

 

F

Pellitoryweed (Parietaria floridana)2

Annual

N

N

 

N

       

Pepperweed, Virginia (Lepidium virginicum)

Annual

E

E

 

E

E

E

E

E

Pickerelweed (Pontederia cordata)

Perennial

             

G

Pigweed, redroot (Amaranthus retroflexus)

Annual

E

E

E

E

E

E

E

E

Pigweed, tumbleweed (A. graecizans)

Annual

E

E

E

E

E

E

E

E

Pimpernel, scarlet (anagallis arvensis)

Annual

E

G

 

F

E

E

E

E

Plantain, blackseed (Plantago rugelii)

Perennial

E

E

P

E

E

E

E

E

Plantain, bracted (P. aristate)

Annual

E

G

P

G

E

E

E

E

Plantain, broadleaf (P. major)

Perennial

E

E

P

E

G

E

G

G

Plantain, buckhorn (P. lanceolata)

Perennial

E

G

P

E

G

E

E

E

Poison ivy (Toxicodendron radicans)

Woody

F

F

 

N

G

E

E

G

Poison oak (T. toxcarium)

Woody

F

P

 

N

F

G

E

G

Pokeweed (Phytolacca americana)

Perennial

F

F

   

G

E

E

E

Pondweed (Potamogeton spp.)

Perennial

E

N

           

Ponyfoot (Dichondra repens)

Perennial

E

 

G

 

E

E

E

E

Poorjoe (Diodia teres)

Annual

G

F

 

F

E

E

E

E

Povertygrass (Aristida dichotoma)

Annual

N

N

 

N

N

N

E

E

Puncturevine (Trebulus terrestris)2

Annual

G

F

 

G

E

E

F

E

Purslane, common (Portulaca oleracea)

Annual

F

F

G

G

E

E

G

E

Pusley, Florida (Richardia scabra)

Annual

E

     

E

E

   

Pussytoes, plantainleaf (Antennaria plantaginifolia)

Perennial

G

G

 

F

G

E

E

E

Queensdelight (Stillingia sylvatica)

Perennial

N

             

Radish, wild (Raphanus raphanistrum)

Annual

G

F

 

F

E

E

E

E

Ragweed, common (Ambrosia artemisiifolia)

Annual

F

P

E

G

E

E

E

E

Ragweed, giant (A. trifida)

Annual

F

P

 

G

E

E

E

E

Ragweed, lanceleaf (A. bidentata)

Annual

E

E

 

G

E

E

E

E

Ragweed, western (A. psilostachya)

Perennial

G

   

G

E

E

   

Rape, bird (Brassica rapa)

Biennial

E

E

 

E

     

G

Redstem (Ammannia coccinea)

Annual

E

E

 

G

       

Redvine (Brunnichia cirrhosa)

Perennial

N

N

 

N

G

G

 

G

Reed, common (Phragmites australis)

Perennial

             

G

Reed, giant (Arundo donax)

Perennial

N

N

 

N

N

N

   

Sandbur, field (Cenchrus incertus)

Perennial

N

N

 

N

N

N

G

E

Sandbur, longspine (C. longispinus)

Annual

N

N

 

N

N

N

E

E

Sandbur, southern (C. echinatus)

Annual

             

E

Sandwort, thymeleaf (Arenaria serpyllifolia)

Annual

E

     

G

   

E

Sedge, hop (Carex lupulina)

Perennial

N

N

 

N

N

N

 

G

Senna, coffee (Cassia occidentalis)

Annual

G

P

 

P

E

E

E

E

Senna, sensitive (C. nictitans)

Annual

G

F

 

P

E

E

E

E

Senna, sicklepod (C. obtusifolia)

Annual

F

P

 

P

E

E

E

E

Senna, wild (C. marilandica)

Perennial

P

P

 

N

G

G

G

E

Sesbania, coffeebean (Sesbania exaltata)

Annual

F

G

 

F

E

E

 

G

Shepherdspurse (Capsella bursa-pastoris)

Annual

G

G

 

G

E

E

E

E

Sida, prickly (Sida spinosa)

Annual

E

G

 

P

E

E

E

E

Signalgrass, broadleaf (Brachiaria platyphylla)

Annual

N

N

       

G

G

Smartweed, ladysthumb (Polygonum persicaria)

Annual

G

F

F

G

E

E

E

E

Smartweed, Pennsylvania (P. pensylvanicum)

Annual

G

F

 

G

E

E

E

E

Smartweed, water (P. amphibium)

Perennial

P

P

 

P

F

F

F

G

Snakeroot, white (Eupatorium rugosum)

Perennial

F

             

Snakeweed

                 

Sneezeweed (Helenium autumnale)

Perennial

G

G

 

F

F

G

G

G

Sneezeweed, bitter (H. amarum)

Annual

E

E

 

G

E

E

 

E

Snow-on-the-mountain (Euphorbia marginata)

Annual

F

   

F

E

E

F

G

Sorrel

Perennial

G

F

 

F

E

E

E

E

Sorrel, heartwing (Rumex hastatulus)

Perennial

E

     

E

E

 

E

Sorrel, red (R. acetosella)

Perennial

N

N

N

N

E

E

G

E

Sowthistle, annual (Sonchus oleraceus)

Annual

E

E

 

E

E

E

E

E

Sowthistle, perennial (S. arvensis)

Perennial

F

F

 

F

G

G

G

G

Sowthistle, spiny (S. asper)

Annual

E

   

E

E

E

E

E

Spanishneedles (Bidens bipinnata)

Annual

E

G

 

G

E

E

E

E

Spatterdock (Nuphur lutea macrophylla)

Perennial

             

E

Speedwell, corn (V. arvensis)

Annual

P

N

 

N

F

     

Speedwell, purslane (V. peregrina)

Annual

F

N

F

 

F

     

Spikerush

Perennial

F

F

 

P

       

Spurge, flowering (Euphorbia corollate)

Perennial

P

     

G

E

   

Spurge, spotted (E. maculata)

Annual

P

F

F

P

E

E

F

G

Spurry, corn (Spergula arvensis)

Annual

P

F

G

N

G

E

   

St. Johnswort (Hypericum perforatum)

Perennial

P

 

N

         

St. Johnswort, spotted (H. punctatum)

Perennial

F

             

Starbur, Paraguay (Acanthospermum australe)

Annual

P

N

 

N

G

E

 

E

Strawberry, wild (Fragaria spp.)

Perennial

P

N

N

N

G

G

E

G

Sumpweed, rough (Iva ciliate)

Annual

E

     

E

E

   

Sunflower (Helianthus annuus)

Annual

E

G

 

E

E

E

G

E

Sweetclover, annual yellow (Melilotus indica)

Annual

E

E

 

E

E

E

E

E

Sweetflag (Acorus calamus)2

Perennial

       

G

   

E

Swinecress (Coronopus didymus)

Biennial

E

G

 

F

E

E

 

E

Thistle, bristly (Cirsium horridulum)

Biennial

F

     

E

E

   

Thistle, milk (Silybum marianum)

Biennial

E

G

   

E

     

Thistle, musk (Carduus nutans)

Biennial

E

F

 

F

G

E

E

E

Threeawn, prairie (Aristida oligantha)

Annual

N

N

 

N

N

N

G

E

Threeawn, red (A. longisteta)

Perennial

N

N

 

N

N

N

F

F

Tickseed (Coreopsis tinctoria)

Annual

G

     

E

E

   

Toadflax, blue (Linaria canadensis)

Perennial

P

             

Torpedograss (Panicum repens)

Perennial

             

G

Trumpetcreeper (Campsis radicans)

Perennial

P

N

 

N

G

E

G

G

Velvetleaf (Abutilon theophrasti)

Annual

G

G

 

F

F

E

E

E

Velvetgrass (Holcus lanatus)

Perennial

N

N

 

N

N

N

G

E

Vervain, blue (Verbena hastata)

Perennial

E

     

E

     

Vervain, hoary (V. stricta)

Perennial

G

             

Vervain, prostrate (V. bracteata)

Perennial

E

             

Vervain, roadside (V. bonariensis)

Perennial

G

     

E

     

Vetch, narrowleaf (Vicia angustifolia)

Annual

E

F

   

E

E

G

E

Vetch, wild (Vicia spp.)

Annual

E

E

F

E

E

E

E

G

Violet (Viola spp.)

Perennial

P

N

N

 

F

G

G

G

Waterhyacinth (Eichhornia crassipes)

Perennial

G

           

G

Waterhemlock, spotted (Cicuta maculata)

Perennial

G

     

E

E

E

G

Waterhemp (Amaranthus tamariscinus)

Annual

E

E

 

E

E

E

E

E

Waterhemp, tall (A. tuberculatus)

Annual

E

E

 

E

E

E

E

E

Waterweed, Canada (Elodea canadensis)

Perennial

F

             

Windmillgrass (Chloris verticillata)

Perennial

N

N

 

N

N

N

F

G

Wintercress, early (Barbarea verna)

Perennial

E

G

 

G

E

E

E

E

Witchgrass (Panicum capillare)

Annual

N

N

 

N

N

N

E

E

Woodsorrel, yellow (Oxalis stricta)

Perennial

P

N

   

G

E

 

E

Wormwood, annual (Artemisia annua)

Annual

G

F

N

 

E

E

   

Wormwood, Louisiana (Artemisia ludoviciana)

Perennial

F

P

 

P

G

E

F

G

Yankeeweed (Eupatorium compositifolium)

Perennial

F

       

E

   

Yarrow, common (Achillea millefolium)

Perennial

P

P

F

N

G

E

F

G

Yellow rocket (Barbarea vulgaris)

Perennial

F

G

 

F

G

E

G

E

¹Ratings: E = excellent, G = good, F = fair, P = poor, N = none
²Rare
* = Related species
** = See also Pigweed
See limitation on use of 2,4,5-T and silvex below.

On February 28, 1979, the Environmental Protection Agency (EPA) announced emergency suspension of uses of 2,4,5-T products on forests, rights-of-way, and pastures. EPA also announced suspension of silvex products registered uses for forestry, rights-of-way, pasture, home, aquatic, and recreation areas. Cancellation proceedings were initiated at the same time. Decisions on use of these products will not be known until final actions have been taken. During the interim period, these uses are illegal.


Publication 1934 (POD-10-22)

Adapted and distributed in Mississippi by John D. Byrd, Jr., PhD, Extension/Research Professor, Plant and Soil Sciences, and Sidney McDaniel, PhD, former Professor of Botany, Mississippi State University, from “Systematic Herbicides for Weed Control” by Dayton L. Klingman, Weed Science Laboratory, Agricultural Research Service, U.S. Department of Agriculture; R. W. Bovey, Agricultural Research Service, U.S. Department of Agriculture, Texas A&M University; E. L Knake, Agronomy Department, University of Illinois; A. H. Lange, San Joaquin Valley Agricultural Research and Extension Center, University of California; J. A. Meade, Soils and Crops Department, Rutgers University; W. A. Skrock, Department of Horticultural Science, North Carolina State University; R. E. Stewart, Forest Service, U.S. Department of Agriculture; and D. L. Wyse, Department of Agronomy and Plant Genetics, University of Minnesota.

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Authors

Portrait of Dr. John D. Byrd, Jr.
Extension/Research Professor
Weed Scientist/Weed Control - Agronomic and Horticultural Crops and noncropland

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