Common and Glossy Buckthorns

Invasive plants can thrive and aggressively spread beyond their natural range, disrupting ecosystems. The Management of Invasive Plants in Wisconsin series explains how to identify invasive plants and provides common management options.

Mulches for Home Gardens and Plantings

Boost your garden’s production with mulches. This publication shows when to use organic mulches, like bark or leaves, and synthetic mulches, like plastic sheets, and teaches how to apply them.

Poison Ivy

Poison Ivy is a perennial woody plant that grows as either a low shrub or a climbing vine. Poison ivy is native to North America and is common in Wisconsin, growing in pastures, roadside ditches, fence rows, wooded forests, beaches and parks. Contact with poison ivy causes skin rashes, blisters and other allergic reactions. Learn identification and control in this factsheet.

Milkweed (Ornamental Plants Toxic to Animals)

To increase monarch populations, people are increasingly planting ornamental types of milkweed and encouraging common milkweed to grow wherever it occurs in uncultivated areas. While milkweed is beneficial to monarch populations, people need to be aware that it is toxic and can be lethal to animals, particularly horses and other equines.

Wild cucumber invading area with Vijai Pandian (August 26, 2019)

There is a timing for all plants including weeds to be conspicuous at a certain season in natural landscape. In autumn, one such attractive weed that has begun to catch attention in southeast Wisconsin is wild cucumber (echinocystis lobata). Native to Wisconsin, wild cucumber is a fast-growing … Link to full article.

Dodder, Cuscuta spp.

Tangles of pale yellow or bright orange strings running amok over other plants may remind you of science fiction tales, but there are actually real plants that grow like this. The nearly leafless, stringlike stems of dodder can be seen occasionally on a wide variety of plants in different habitats. Learn more about the biology of these parasitic plants that depend on their host plants for nutrition in this article…

Jewelweed, Impatiens capensis

With showy orange flowers, jewelweed comes into its own in late summer and fall. Growing in dense patches in moist, shady habitats, this native plant offers nectar for hummingbirds and other pollinators. Usually grown just as a wild plant, it can be added to rain gardens or to suppress weeds in appropriate areas. Learn more about this self-seeding annual in this article…

Cucumber Mosaic

Cucumber mosaic is a viral disease of worldwide distribution that affects over 1200 plant species. Hosts include a wide range of fruits, vegetables, herbaceous and woody ornamentals, and weeds. This factsheet covers identification and ways to prevent this incurable disease.

Wild Parsnip

Wild parsnip (Pastinaca sativa) is an aggressive Eurasian member of the carrot family that grows in sunny areas and tolerates dry to wet soil types. Very invasive, it can overtake roadsides and fields. Contact with this plant can cause severe skin blisters and permanent scarring. Learn how to identify and control this invasive plant in this factsheet.

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