Prairie Dock Tall stalks, to 10', carry bright yellow flowers above the broad, coarse foliage that grows about 2' tall in clusters close to the ground. prairie dock (Silphium terebinthinaceum) goldenrods (Solidago gigantea, S. ohioensis, S. riddellii, and others) ... Invasive plants are favored by nutrient enrichment, fire suppression, and hydrologic alteration. (coneflower), Silphium spp. (rosinweed, prairie dock, compass plant) Celastrus orbiculatus Oriental bittersweet: R: Aristolochia durior (Dutchman's pipe), Celastrus scandens (American bittersweet) Centaurea maculosa Spotted knapweed: R: Echinacea spp. The Minnesota Department of Natural Resources is reminding lake property owners to carefully check boats and trailers, docks and lifts, and all other water-related equipment for invasive … While gardeners often plant it for the sake of the Monarch butterfly, it can be invasive; other species may be preferable. Prairie Dock Plant Type: Forb Plant Height: 5-8 ft Soil Moisture: Mesic Plant Spread: 3-4 ft Sun Exposure: Full Sun Flower Color: Yellow Soil Type: Clay, Sand, Loam Bloom Period: July-August Salt Tolerance: Low Notes: Companion Plantings: Pasture thistle( Cirsium discolor ) is a composite with purple-flowered discoid capitula. Prairie Dock's natural range extends to Wisconsin and Iowa and does not quite reach Minnesota, but it is available in the nursery trade and may be included in prairie seed mixes and in restored plantings. Invasive terrestrial plants can disrupt native landscapes like prairies, wetlands, and forests. white prairie clover seedlings is one method of reducing weed competition. These leaves will mature in size in early summer and by late summer the flowering stalk will shoot up with attractive yellow composite flowers. White prairie clover has good relative forage quality, but suffers from having relatively low forage yield when compared to other native legume species. Cut-leaf Prairie-Dock (Silphium pinnatifidum)By Robert Arndt. Prairie Milkweed [Asclepias sullivantii] This species is similar to Common Milkweed, but its flowers are a darker pink and larger. “Dock” is a general term for a plant with especially large leaves and, prairie dock sure fits that description. Curly Dock – Rumex crispus • Invasive, Exotic Perennial Herb • Height is 2-4 ft. ... • Invasive, Exotic Perennial • Height is 3 ft. , (Katie’s is a Dwarf Form) • Purple, Pink, or White Flowers • Crowds Out Native Plants • Heavily Sold in the Nursery and Its sandpaper-textured leaves, 18″ long and 12″ wide, prove too coarse for most rabbits. Prairie dock is a large-leaved composite. Foliage is spade-shaped with a rough, "cat's tongue" texture typical of Silphiums. ... For info on subjects other than plant identification (gardening, invasive species control, edible plants, etc. They also negatively impact agriculture economies and can be harmful to our health. On the right are the withered remnants of the leaves of the Prairie Dock. Cut-leaf Prairie-dock, also known as tansy rosinweed, has been reported to occur from Wisconsin south through Illinois, Ohio and Indiana, through Kentucky and Tennessee and into Georgia and Alabama. For example, in the photo below, the invasive Autumn Olive shrub is on the left, green and photosynthesizing. The location is a roadside ditch that has a substantial population of high quality native prairie wildflowers. Learn more about the invasive plants that are threatening Minnesota and what you can do to help by visiting the resources on this page. (coneflower), Silphium spp. Prairie Dock is among the taller and larger-leaved prairie plants, often maturing to 9′ in height. 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