Weed ID Challenge Weed ID Challenge Invasive PlantsInvasive Plants

Have the Right Tools

• Seedling ID keys are essential

• A 10X hand lens

• Get a good set of reference materials

• $50 will go a long way

My Favorite ID Books

Ontario Weeds

– Great detail in descriptions

– Color pictures at end

My Favorite ID Books

Weeds of the NE–Color pictures

–Great tables of:• Shortcut ID• Comparisons of

look alikes

My Favorite ID Books

• Guide to Wildflowers• Weeds of the Great Plains

• These and more on the ID Ref. Handout

Wisconsin Weed ID Resource

Dirty Dozen and Beyond• Now a state-wide resource • “Beyond” = 13 new species

–Rich in brush species and biennials

–Includes management suggestions

–Will be popular with invasives

groups

CD/DVD Resources

• Interactive Encyclopedia of North American Weeds– Very comprehensive– Designed for educators– Available via www.ncwss.org ($65)

www.ncwss.org/

On-Line ID Resources

• For the brave of heart:– http://flora.huh.harvard.edu:8080/

actkey/

• One being developed:– http://plants.usda.gov/plantkeys/

wisconsin_grasses/WISCONSIN_GRASSES.html

USDA Plants Database

Midwest Distribution http://plants.usda.gov/

Common and Giant Ragweed

Giant Ragweed Look-alike

Digital Weed ID

Digital Weed ID

Catchweed Bedstraw

Digital Weed ID

Digital Weed ID

Japanese Knotweed

Good luck in the Field!!