Can you identify weeds? To answer the question, click on the photograph you think is the correct answer. A correct answer will give APPLAUSE. An incorrect answer will give another sound. To see the common names of the weeds, click anywhere on the green background. Then use the “page down” key, “down arrow” key, or another mouse click to move to the next question. START QUIT

Which is black nightshade? Hemp dogbane Burdock

Which is horseweed (marestail)? Horsenettle Horseweed (Marestail) Jimsonweed

Which is common milkweed? Common ragweed Curly dock Common milkweed

Which is field bindweed? Field pennycress Fall panicum

Flower-of-an-hour (Venice mallow) Which is giant ragweed? Hedge bindweed Flower-of-an-hour (Venice mallow) Giant ragweed

Which is hemp dogbane? Hemp dogbane Hemp (Marijuana) Honeyvine milkweed

Which is giant ragweed? Giant ragweed Honeyvine milkweed Ivyleaf morningglory

Which is jimsonweed? Horseweed (marestail) Ladysthumb smartweed

Which is Johnsongrass? Johnsongrass Green foxtail Large crabgrass

Which is pigweed? Giant ragweed Common lambsquarters Pigweed

Which is horsenettle? Hemp dogbane Horsenettle Honeyvine milkweed

Which is broadleaf plantain? Buckhorn plantain Broadleaf plantain Horsenettle

Flower-of-an-hour (Venice mallow) Which is flower-of-an-hour (Venice mallow)? Field bindweed Flower-of-an-hour (Venice mallow) Giant ragweed

Which is jimsonweed? Horseweed (marestail) Horsenettle Jimsonweed

Which is pigweed? Peppergrass Pigweed Ivyleaf morningglory

Which is shattercane? Shattercane Quackgrass Green foxtail

Which is purslane? Purslane Shepherd’s-purse Perennial sowthistle

Which is tall morningglory? Velvetleaf Tall morningglory Ivyleaf morningglory

Which is waterhemp? Wild carrot Waterhemp Hemp dogbane

Which is burdock? Burdock Chicory Common milkweed

Which is field pennycress? Peppergrass Shepherd’s-purse

Which is peppergrass? Peppergrass Giant ragweed Prickly sida

Which is Canada thistle? Perennial sowthistle Field pennycress Canada thistle

Which is prostrate knotweed? Prickly sida Portulaca

Which is velvetleaf? Velvetleaf Burdock Carpetweed

Which is cheat? Foxtail barley Cheat Johnsongrass

Which is broadleaf plantain? Pigweed Ivyleaf morningglory

Which is giant foxtail? Giant foxtail Green foxtail Yellow foxtail

Which is yellow nutsedge? Field pennycress Yellow nutsedge Wild garlic

Which is common cocklebur? Common chickweed Common ragweed

Which is wild parsnip? Wild carrot Wild parsnip Peppergrass

Which is chicory? Burdock Common milkweed Chicory

Flower-of-an-hour (Venice mallow) Which is hedge bindweed? Hedge bindweed Flower-of-an-hour (Venice mallow) Giant ragweed

Which is barnyardgrass? Broadleaf plantain Giant foxtail

Which is yellow nutsedge? Perennial sowthistle Yellow nutsedge Horseweed (Marestail)

Which is daisy fleabane? Dandelion Daisy fleabane Fall panicum

Which is Johsongrass? Giant ragweed Johnsongrass Ivyleaf morningglory

Which is carpetweed? Carpetweed Common chickweed Dandelion

Which is hemp (marijuana)? Hemp dogbane Hemp (Marijuana) Honeyvine milkweed

Which is honeyvine milkweed? Tall morningglory Hedge bindweed Honeyvine milkweed

Which is common lambsquarters? Ladysthumb smartweed Common lambsquarters Pigweed

Which is common mallow? Common mallow Prickly sida Shepherd’s-purse

Which is buckhorn plantain? Broadleaf plantain Buckhorn plantain Ivyleaf morningglory

Which is purslane? Purslane Ivyleaf morningglory Field pennycress

Which is large crabgrass? Johnsongrass Green foxtail Large crabgrass

Which is black nightshade? Bitter nightshade Field bindweed

Which is common mullein? Giant ragweed Common mullein Burdock

Which is green foxtail? Shattercane Quackgrass Green foxtail

Which is wild carrot? Wild carrot Wild garlic Wild mustard

Which is field bindweed? Bitter nightshade Canada thistle

Which is musk thistle? Perennial sowthistle Musk thistle Canada thistle

Which is fall panicum? Goosegrass Woolly cupgrass Fall panicum

Which is carpetweed? Carpetweed Common chickweed Prostrate knotweed

Which is foxtail barley? Cheat Johnsongrass

Which is peppergrass? Peppergrass Johnsongrass Ivyleaf morningglory

Which is wild garlic? Field pennycress Yellow nutsedge Wild garlic

Which is shepherd’s-purse? Field pennycress Peppergrass Shepherd’s-purse

Which is velvetleaf? Velvetleaf Shattercane Quackgrass

Which is ladysthumb smartweed? Common lambsquarters Pigweed

Which is wild mustard? Dandelion Yellow woodsorrel Wild mustard

Which is dandelion? Yarrow Common ragweed Dandelion

Which is curly dock? Common ragweed Curly dock Bull thistle

Which is perennial sowthistle? Yellow nutsedge Horseweed (Marestail)

Which is quackgrass? Velvetleaf Shattercane Quackgrass

Flower-of-an-hour (Venice mallow) Which is flower-of-an-hour (Venice mallow)? Dandelion Field bindweed Flower-of-an-hour (Venice mallow)

Which is common chickweed? Carpetweed Common chickweed Dandelion

Which is goosegrass? Goosegrass Green foxtail Large crabgrass

Which is prickly lettuce? Perennial sowthistle Prickly lettuce Horsenettle

Which is bitter nightshade? Black nightshade Bitter nightshade Field bindweed

Which is ivyleaf morningglory? Purslane Ivyleaf morningglory Field pennycress

Which is horseweed (marestail)? Perennial sowthistle Yellow nutsedge Horseweed (Marestail)

Which is common ragweed? Giant ragweed Common lambsquarters

Which is black nightshade? Bitter nightshade Black nightshade Common lambsquarters

Flower-of-an-hour (Venice mallow) Which is common mallow? Common mallow Hedge bindweed Flower-of-an-hour (Venice mallow)

Which is prickly sida? Common mallow Prickly sida Shepherd’s-purse

Which is waterhemp? Waterhemp

Which is wild sunflower? Waterhemp Common lambsquarters Wild sunflower

Which is woolly cupgrass? Goosegrass Woolly cupgrass Fall panicum

Which is yarrow? Yarrow Common ragweed Dandelion

Which is yellow foxtail? Giant foxtail Green foxtail Yellow foxtail

Flower-of-an-hour (Venice mallow) Which is field bindweed? Dandelion Field bindweed Flower-of-an-hour (Venice mallow)

Which is yellow woodsorrel? Dandelion Yellow woodsorrel Wild mustard

Which is common mullein? Dandelion Common mullein Burdock

The End Quit

BACK This material was prepared by Ken McPheeters, Information Technology and Communication Services, and Aaron Hager, Department of Crop Sciences, College of Agricultural, Consumer and Environmental Sciences, University of Illinois at Urbana-Champaign. Photographs provided by authors, unless otherwise noted. The illustrated weeds are on the weed identification list of the Illinois Association of Vocational Agriculture Teachers Crops Career Development Event. ITCS Instructional Materials 1401 South Maryland Drive Urbana, IL 61801 (217) 244-3906 FAX (217) 333-0005 http://im.itcs.uiuc.edu Copyright © 2007 by the Board of Trustees of the University of Illinois. ITCS Instructional Materials Information Technology and Communication Services University of Illinois at Urbana-Champaign