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. To find out more about this interesting group of parasitic plants, read this article…

Support Extension