Annual Broadleaf Weed Seedling Identification Brief descriptions with pictures, from the U. of Minnesota. Annual Grass and Perennial Weed Identification Brief descriptions with pictures, from the U. of Minnesota. Broadleaf Identifier Click on the picture for more info. The suggested controls are geared towards farmers, but these weeds plague gardeners too. A useful guide even for gardeners.
Pictures point out significant features of each plant, such as the dandelion's taproot and flower.
From Purdue U. Midwestern Wetland Flora Species List and Identification Key Use this system to track down what's springing up in your wetlands. From the Northern Prairie Wildlife Research Center. Weed Images and Descriptions Thumbnail and full-size images of common weeds, from Proscapes. No cost, No obligation, No hassle. Online Online catalog for organic, hydroponic, hobby greenhouse, container and indoor gardening supplies.