Common Yellow Woodsorrel, Oxalis stricta

Common yellow woodsorrel is a low-growing weed found throughout most of the US and almost all of Wisconsin. It can be a problem in gardens and lawns. Learn more about this species in this article…

Velvetleaf, Abutilon theophrasti

Weeds are an unfortunate part of every garden. Velvetleaf is one common species that occurs primarily in the southern half of the state. Learn more about this rather distinctive and conspicuous weed in this article…

Common Groundsel, Senecio vulgaris

With inconspicuous flowers and relatively short stature, and often growing in disturbed sites, common groundsel is often overlooked. This European annual can be locally common and spread rapidly, but may be absent or uncommon in other areas. Read more about this introduced weed in this article…

Black Medic, Medicago lupulina

Do you have prostrate weeds with small yellow, clover-like flowers in your garden beds or lawn? This leguminous plant from Europe and temperate Asia, commonly called black medic, is also called yellow trefoil, black clover and hop medic. Read more about this annual weed and how to deal with it in this article…

Mistletoe

Hanging high in trees in warmer climates, mistletoe is a plant that has a long history of myth and tradition dating back to ancient times. Despite the fact these plants cannot tolerate the cold winters of the Midwest, most people are familiar with mistletoe as a holiday decoration. But there are many other types of mistletoe – and many species that are much more spectacular when in bloom. To find out more about this interesting group of parasitic plants, read this article…

Controlling Creeping Charlie, Gleochoma hederaceae

It doesn’t matter what common name you call it, Glechoma hederaceae is a pest in lawns and gardens. This European perennial plant in the mint family – often called creeping Charlie – thrives in moist, shady spots and is difficult to eradicate because it can spread by runners and seeds. To learn more about how to control this creeping nuisance, read this article…

Support Extension