Pennsylvania Smartweed

Common Name: Pennsylvania Smartweed

Genus: Polygonum

Species: pensylanicum

Identification: The plant has a well-developed taproot with an erect stem that can measure up to 3 feet in height. Leaves are long and taper to a point. An identifying feature are the swollen nodes.

Geographic Distribution: Found primarily in the eastern half of the United States, more specifically in low, moist sites such as road ditches, but can be a problem in cultivated fields.

Bushberry

Corn

Corn - Field

Corn - Pop

Corn - Seed

Corn - Sweet

Cotton

Currant

Delta Rice

Elderberry

Fruits Nuts Trees and Vegetables

Gooseberry

Huckleberry

Sorghum

Soybeans

Tobacco

Alfalfa Weevil Hypera

Amaranthes Amaranthus palmeri, Amaranthus hybridus, Amaranthus spinosus

Aphids Therioaphis maculata, Dysphis plantaginea, Acyrthosiphon kondoi, Acyrthosiphon kondoi, Acyrthosiphon pisum, Aphis gossypi

Armyworm, Beet Spodoptera

Armyworms

Barnyardgrass Echinochloa

Billbugs

Bittercress

Black Cutworm

Black Nightshade

Black Vine Weevil

Boll Weevil Anthonomus

Cabbage Looper Trichoplusia

Carpetweed

Cherry Fruit Fly

Chinch Bug

Codling Moth Cydia

Colorado Potato Beetle Leptinotarsa

Common Cocklebur Xanthium

Common Ragweed

Corn Borers

Corn Earworm

Corn Rootworm

Corn Silkfly

Crabgrass Digitaria sanguinalis, Digitaria ischaemum, Digitaria ciliaris

Cupgrass Eriochloa gracilis, Eriochloa villosa

Cutworms Agrotis ipsilon, Agrotis orthogonia, Peridroma saucia

Dandelion

Eastern Nightshade Solanum americanum, Solanum nigrum, Solanum ptycanthum, Solanum saccachoides

European Corn Borer Ostrinia

Fall Armyworm Spodoptera

Field Pennycress

Foxtail Species Setaria venticillata, Setaria faberi, Setaria viridis, Setaria glauca

Giant Ragweed

Goosegrass Eleusine

Grasshopper Melanoplus sanguinipes, Camnula pellacida

Green Peach Aphid Myzus

Hornworms

Japanese Beetle

Jimsonweed Datura

Johnsongrass seedling Sorghum

Kochia Kochia

Lambsquarters Chenopodium

Leafhoppers

Leafminer Liriomyza trifolii, Liriomyza sativa, Liriomyza huidobrensis

Leafroller Archips rosanus, Archips argyrospila, Argyrotaenia velutinana, Choristorenra rosaceana

Lesser Cornstalk Borer

Long-Horned Beetle

Loopers

Lygus Bug Lygus

Maggots

Morningglory

Nightshades Solanum americanum, Solanum nigrum, Solanum ptycanthum, Solanum saccachoides

Northern Corn Rootworm Diabrotica longicornus barberi, Diabrotica virgifera virgifera

Nutsedges Cyperus rotundus, Cyperus esculentus

Panicum, Fall Panicum

Panicum, Texas Panicum

Pear Psylla Cacopsylla

Pigweed, Redroot Amaranthus

Pink Bollworm Pectinophora

Plant Bugs

Plum Curculio

Potato Flea Beetle

Prickly Sida Sida

Ragweeds Ambrosia artemisiifolia, Ambrosia trifida

Sandbur, Field Cenchrus

Sap Beetle

Seedcorn Beetle

Seedcorn Maggot

Shattercane Sorghum

Sicklepod Cassia

Silverleaf Whitefly Bemisia tabaci, Bemisia argentifolii

Sod Webworm

Southern Corn Leaf Beetle

Southern Corn Rootworm Diabrotica

Southwestern Corn Borer Diatrea

Spider Mites Tetranychus urticae, Tetranychus turkestani, Tetranychus pacificus, Tetranychus cinnabarinus

Spotted Cucumber Beetle Diabrotica

Sprangletop

Spurred Anoda Anoda

Stalk Borer

Stink Bug Nezara viridula, Chlorockroa say, Euschistus consperus

Sweet Potato Silverleaf Whitefly Bemisia tabaci, Bemisia argentifolii

Tarnished Plant Bug Lygus

Thrips

Tobacco Budworm Helicoverpa

Velvetleaf Abutilon

Venice Mallow Hibiscus

Waterhemp

Western Corn Rootworm Diabrotica longicornus barberi, Diabrotica virgifera virgifera

White Grub

Whiteflies

Wild Mustard Brassica

Wild Sunflower Helianthus

Wireworms Melanotus fissilis, Limonius spp. Many species in the order Coleoptera, family Elatoridae.

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