Weed Index 2016 - 2024 - Landscape and Nursery IPM Alert (links are set back to 2019)
WEED | DATE OF REPORT |
---|---|
Amaranth, palmer | 17July07 |
Arum, Italian (Arum italicum) | 24Mar22 |
Bamboo (Phyllostachys aurea and P. aureosulcata) | 23Aug04 |
Bedstraw, catchweed | 20Jun26 19Jun07 |
Beefsteak plant (Perilla frutescens) | 20Sep11 19Nov01 |
Bindweed, field | |
Bittercress, hairy | |
Bittersweet, Oriental | 23Aug25, 23Jun16 22Oct21 21Sep10 |
Black medic | 24Jul26 |
Bluegrass, annual and roughstalk |
24May03 (roughstalk) 22Jul15 (annual), 22May13 (roughstalk) 18Apr27 |
Broomsedge | 17Aug25 |
Burcucumber | 16Oct07 |
Burnweed, American | 18Sep14 |
Buttercup, bulbosus (Ranunculus bulbosus) | 22Apr15 21May07 16May20 |
Buttonweed, Virginia | 20Oct02 |
Carpetgrass, small (Arthraxon hispidus) | |
Carrot, wild | 22Sep09 |
Chameleon plant | 21Jun18 |
Chickory (Cichoriium intybus) | 16Oct21 |
Chickweed, common |
20Apr17 |
Cocklebur, common | 24Oct25 |
Cogongrass | 24May17 |
Cow parsnip | 22Apr22 |
Crabgrass | |
Crow-dipper (Pinellia ternata) | 17May19 |
Curly dock | 23Oct06 |
Dayflower, Asiatic | 24Aug09 |
Deadnettle, purple | |
Deadnettle, white spotted (Lamium maculatum) | 16Apr08 |
Dodder | 20Aug21 19Jul26 |
Dogbane, hemp | 22Jul08 |
Eastern black nightshade | 17Jul21 |
Fall germinating weeds | |
False green kyllinga | 17Jul14 |
False (also fool's) parsley (Aethusa cynapium) | 16May27 |
Foxtail, giant | |
Foxtail, yellow | 23Jun30 17Sep29 |
Fumewort, incised | 24Mar22 |
Garlic, wild | 20Oct23 |
Geranium, Carolina |
17Apr28 16Jun10 |
Goat's beard (Tragopogon dubius) |
16Jul01 |
Goosegrass | 24Aug02 |
Goutweed (Aegopodium podagraria) | |
Greenbrier, common | 23Oct20 |
Green kyllinga | 21Sep03 |
Ground ivy (Glechoma microcarpa) | 23May12 20May22, 20May15 19Jul19 |
Groundsel, common | 23Oct27 19Jun28 |
Hemp dogbane | 18Aug24 |
Henbit (Lamium amplexicaule) | |
Herbicide, biological for nurseries and greenhouses | 21Oct01 |
Herbicide damage | 22Jun03 |
Herbicide drift | 20Sep04 |
Herbicide efficacy | 21Jul09 (in heat) |
Herbicide, impact of rain and temperature | 20Oct30 |
Hog peanut | 16Sep16 |
Hogweed, giant |
17Aug18, 17Jun09 |
Horsenettle |
17Jun16 |
Indian mock strawberry | 23May26 |
Invasive plants - New MDA Tier 1 and Tier 2 plants |
24Jun21 (changes to law) 20Sep04 |
Iron, for weed control | 21Jul16, 21Jul02, 21Jun25 |
Ironweed, New York (a native plant) | 18Oct05 |
Italian arum | 17Mar17 |
Japanese hops (Humulus japonicas) | 18Jul06 |
Jewelweed (Impatiens capensis), native, but reseeds well and can be a problem in some situations | 16Jul22 |
Jimsonweed | 20Jul31 |
Johnsongrass | |
Knotweed, Japanese |
19Aug23 |
Kyllinga, green | 18Nov02, 18Sep21 |
Lady's thumb |
17May26 |
Lespedeza, annual | 24Aug30 |
Lespedeza, common (Kummerowia striata (syn. Lespedeza striata) | 19Aug30 16Oct28 |
Lesser celandine |
19Apr26 |
Lettuce, prickly (Latuca scariola) | 19May24 18Aug31 |
Marestail (horseweed) |
24Sep13 (vs ID of goldenrod) 22May27 |
Mile-a-minute weed | 20Aug21 16Aug12 |
Mistletoe | 22Oct21 |
Morning glory, ivyleaf | |
Morning glory, tall | |
Mugwort | 21Jul02, 21Jun25 17Jul28 |
Mulberry weed (aka hairy crabweed) | 19Aug09 |
Mullein, common | 20Jul10 |
Mustard, garlic | |
Mustard, hedge | 23Jun02 22Jul22 |
Nettle, European stinging | 18May04 |
Nightshade, bittersweet (Solanum dulcamara) |
16Jul15 |
Nimblewill | 23Jul21 22Jul29 21Sep17 |
Nutsedge, yellow |
23May19 16Sep23 (photo of nutlets) |
Panicum, fall |
18Aug17 |
Pear, callery (aka Bradford) | 21Oct08 19Apr12 |
Pineapple weed | |
Plantain (Plantago sp.) | 22Oct28 |
Pokeweed | |
Poison hemlock | |
Poison ivy | 22Aug26 |
Porcelain berry | 23Oct13, 23Oct06, 23Sep29 |
Purslane, common | 23Aug11 |
Queen Anne's Lace (Daucus carota) | 18Jun22 |
Ragweed, common | 23Sep22 17Oct13 |
Rose, multiflora | 18Oct26 |
Shepherd's purse (Capsella bursa-pastoris) |
19May17 |
Smartweed, Pennsylvania | 20Jul17 |
Sowthistle, perennial (Sonchus arvensis) | 23Oct13 |
Speedwell, common (Veronica officinalis) | 17Apr14 |
Speedwell, Persian (Veronica persica) | 17Apr21 |
Spurge, prostrate | 17Sep15 |
Spurge, Japanese | 19Apr12 |
Spurge, spotted | 23Aug25 21Jul02 16Aug19 |
Star-of-Bethlehem (Ornithogalum umbellatum) | 23May05 20May08 18Apr13 |
Stiltgrass, Japanese |
22Apr15 (germination) |
Stork's bill, common (Erodium cicutarium) | 20May01 |
Teasel, common | 23Sep15 |
Thistle, Canada |
16Sep30 (infected by bacteria) |
Thistle, musk | 22Jun17 |
Thistle, tall (Cirsium altissimum) | 16Jun03 |
Thoroughwort pennycress | 17Jun23 |
Timothy (Phleum pretense) | 16May13 |
Tree of heaven (Ailanthus altissima) | 20Sep04 18Jul27 |
Velvetleaf | 23Aug04 20Aug14 |
Vernonia novaboracensis (New York ironweed), a native plant that can be a problem in some sites. | 22Sep30 |
Violets, wild | 16May06 |
Virginia creeper | 23Sep29 22Sep02 18Jul20 |
Weeds, in spring | 22Apr01 |
Weed control challenges: timing, soil moisture | 16Sep02 |
Weed control: management practices | 19Sep06 (in turf) |
Weed control: soil temperatures | 16Mar25 |
Wild carrot | 23Jun09 21Jul23 |
Wineberry (Rubus phoenicolasius) | 20Oct09 19Jun21 16Nov04 |
Winter, weed growth | 24Feb21 |
Witchgrass (Panicum capillare) | 16Jul29 |
Woodsorrel, yellow | 22Jun03 21Oct22 19Oct04 |
Yarrow, common | 20Jun19 17Aug11 |
Yellowrocket (Barbarea vulgaris) | 24Apr12 |