Wild Sunflower

Common Name: Wild Sunflower or Common Sunflower

Genus: Helianthus

Species: annuus

Identification: This is an annual, 1 to 10 feet tall which is a problem particularly in the Mid-West. The seedling cotyledons have a rough surface with a slightly lobed margin, tapered into a point. Stems beneath cotyledons are green with stiff white hairs. Leaves are alternate with toothed edges. Both the leaves and stems are covered with hair. The large flowers are yellow with brown to reddish-brown centers.

Geographic Distribution: Found throughout the United States.

Corn

Corn - Field

Corn - Pop

Corn - Seed

Corn - Sweet

Cotton

Soybeans

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

Black Cutworm

Black Nightshade

Boll Weevil Anthonomus

Cabbage Looper Trichoplusia

Chinch Bug

Colorado Potato Beetle Leptinotarsa

Common Cocklebur Xanthium

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

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

European Corn Borer Ostrinia

Fall Armyworm Spodoptera

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

Goosegrass Eleusine

Grasshopper Melanoplus sanguinipes, Camnula pellacida

Jimsonweed Datura

Johnsongrass seedling Sorghum

Kochia Kochia

Lambsquarters Chenopodium

Leafminer Liriomyza trifolii, Liriomyza sativa, Liriomyza huidobrensis

Lesser Cornstalk Borer

Lygus Bug Lygus

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

Pennsylvania Smartweed Polygonum

Pigweed, Redroot Amaranthus

Pink Bollworm Pectinophora

Prickly Sida Sida

Ragweeds Ambrosia artemisiifolia, Ambrosia trifida

Sandbur, Field Cenchrus

Sap Beetle

Seedcorn Beetle

Seedcorn Maggot

Shattercane Sorghum

Sicklepod Cassia

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

Spurred Anoda Anoda

Stalk Borer

Stink Bug Nezara viridula, Chlorockroa say, Euschistus consperus

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

Wild Mustard Brassica

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

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