Babaamaajimowinan (Telling of news in different places)
Babaamaajimowinan (Telling of news in different places)
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In January, the Minnesota Department of Agriculture (MDA) added Amur corktree (Phellodendron amurense) to the Minnesota Noxious Weed List. Amur corktree is an introduced species that has been planted throughout the northeast and midwestern United States. It is tolerant of many urban conditions including drought and salt. Additionally, it grows quickly, has rot-resistant wood, and grows in many soil conditions. A single female tree can produce thousands of seeds, and the trees can outcompete...
In January, the Minnesota Department of Agriculture (MDA) added Johnsongrass (Sorghum halepense) to the Prohibited Eradicate Noxious Weed List. Johnsongrass is a tall perennial grass that grows up to 8 feet and can cause millions of dollars of lost agricultural revenue. It was first introduced into the United States as a forage crop in the early 1800s. Johnsongrass prefers full sun and disturbed soil and can tolerate a variety of habitats. Johnsongrass grows in pastures, roadsides, ditches,...
The Minnesota Department of Agriculture (MDA) - with assistance from County Agricultural Inspectors, township supervisors, and city mayors - helps protect the residents of the state from the negative effects of noxious weeds. A noxious weed is an annual, biennial, or perennial plant that is designated to cause harm to public health, the environment, public roads, crops, livestock, or other property. There are four categories of noxious weeds: Prohibited Eradicate, Prohibited Control,...
A noxious weed is defined by the Minnesota Noxious Weed Law as an annual, biennial, or perennial plant that the Commissioner of Agriculture designates to be injurious to public health, the environment, public roads, crops, livestock, or other property. Noxious weeds are categorized into four regulatory categories: Prohibited Eradicate, Prohibited Control, Restricted, and Specially Regulated. The highest priority weeds are Prohibited Eradicate. To prevent these species from becoming widespread th...
Since 2017, the Minnesota Department of Agriculture (MDA) has awarded grants through the Noxious Weed and Invasive Plant Grant to counties and municipalities. With support from the Minnesota Legislature and the Environmental and Natural Resources Trust Fund, the MDA has awarded over $1.2 million to 120 projects to mitigate the spread of noxious weeds and invasive plants. Through these grants, the MDA has seen many positive impacts not only with reductions of weed infestations but also increased...
The Minnesota Department of Agriculture (MDA) has made one change to the state's 2021 Noxious Weed List. The designation of the non-native subspecies of phragmites (Phragmites australis spp. australis) has changed from Restricted to Prohibited Control. Though the list typically changes once every three years, the MDA is making this change due to a delay resulting from the Noxious Weed Advisory Committee (NWAC) 2019 recommendation to change the status. The regulations do not apply to Minnesota's...
A popular landscape plant, winged burning bush (Euonymus alatus) is October's Weed of the Month. Winged burning bush was added to the State Noxious Weed List in 2020 as a Specially Regulated Plant. The special regulation requires nurseries and growers to phase the plant out of production over the next three years, and on January 1, 2023, the species will move to the Restricted Noxious Weed category, meaning it will be prohibited from sale, propagation, and transport in the state of Minnesota....
A perennial plant native to the Mediterranean is September's Weed of the Month. Dalmatian toadflax (Linaria dalmatica) was brought to the western United States as an ornamental, escaped cultivation, and has become a noxious weed throughout many western states. Dalmatian toadflax invades and overtakes grasslands, rangelands, pastures, natural areas, and disturbed areas. These infestations have reduced livestock production, land values, biodiversity, and wildlife habitat. Dalmatian toadflax is a...
A member of the milkweed family is August's Weed of the Month. Black swallow-wort (Cynanchum louiseae), also called dog-strangling vine, is a perennial, herbaceous vine that can form large patches and crowd out native vegetation. It was introduced to North America from southern Europe in the 1800s as an ornamental plant, and in 1864 was recorded escaping from a botanic garden in Massachusetts. Since its introduction to North America, it has been found invading abandoned farm fields, pastures,...
July's Weed of the Month, cutleaf teasel (Dipsacus lacinatus), once had a useful propose. But now the weed is being targeted for eradication in Minnesota. Cutleaf teasel is an herbaceous perennial plant that dies after producing seed. It was brought to North America from Europe in the 1700s and its stiff, bristly seed heads were used in the textile industry to raise the nap on fabric. Cutleaf teasel has also been used as an ornamental plant in gardens and flower arrangements. Despite its uses...
In southeast Minnesota, an invasive woody vine has caused property damage and altered ecosystems with its prolific seed production and aggressive growth. Oriental bittersweet (Celatrus orbiculatus) was first confirmed in the Twin Cities Metropolitan Area in 2010, and has since been confirmed in multiple counties with the most severe infestations located in Red Wing and Winona. After the species was listed on the Minnesota Noxious Weed List Prohibited-Eradicate category in 2011, efforts...
Recently, giant hogweed (Heracleum mantegazzianum) has been in national headlines after it was confirmed for the first time in Virginia. Although listed in Minnesota as a Prohibited Noxious Weed, giant hogweed has not been confirmed in Minnesota. In 2011, the Minnesota Department of Agriculture (MDA) and the Minnesota Noxious Weed Advisory committee recommended to the commissioner of agriculture to preemptively list giant hogweed as a means of raising awareness and to make sure it would be...
The Minnesota Department of Agriculture (MDA), as the regulatory agency for managing noxious weeds, helps local governments with weed management and enforcement of the Minnesota Noxious Weed Law. A noxious weed is defined by the Minnesota Noxious Weed Law as an annual, biennial, or perennial plant that the Commissioner of Agriculture designates to be injurious to public health, the environment, public roads, crops, livestock, or other property. State regulated noxious weeds are defined by three...
December's Weed of the Month is a small tree called Amur maple (Acer ginnala). It is native to China and Japan and was introduced to North America in the 1800s as an ornamental plant. Though valued for its brilliant fall color, it has become invasive throughout the eastern and Midwestern states, including Minnesota. Amur maple is a deciduous large shrub or small tree that grows to 20 feet. The leaves are 3-lobed with toothed margins and turn a vibrant red in the fall. It produces abundant double...
November's Weed of the Month, Oriental bittersweet (Celastrus orbiculatus), is a woody vine with colorful red fruit. It was brought to North America from the Asia and used as an ornamental plant. The attractive vines have been used for wreath decorations and in floral decorations; unfortunately, the plant has escaped cultivation and has become invasive in residential and natural areas in Minnesota. Oriental bittersweet spreads by several means. The persistent red fruit is consumed by birds,...
October's Weed of the Month is a tree called black locust (Robinia pseudoacacia). Black locust is native to North America but not native to Minnesota. It has been widely planted as an ornamental plant and for erosion control, and has been documented to be invasive in the upper Midwest. Black locust is a fast growing tree in the legume family. Seedlings have long pairs of thorns, and mature trees can reach 40-90 feet in height. The leaves are alternate, pinnately compound with 7-21 oval...
Morrow's honeysuckle (Lonicera morrowii) is the second of four non-native honeysuckles on the Restricted Noxious Weeds list. It is native to Japan and was introduced to the United States in the 1800s. It was planted for a variety of uses, including ornamental plantings, for wildlife food and cover, and for erosion control. Morrow's honeysuckle has spread and naturalized in many Eastern and Midwestern states. Morrow's honeysuckle is a multi-stemmed, deciduous shrub that grows to 8 feet tall. Leav...
Amur honeysuckle (Lonicera maackii) is one of four species of non-native honeysuckle listed as Restricted Noxious Weeds in Minnesota. It is native to Asia and was introduced to North America as an ornamental plant that was then widely planted for wildlife and erosion control. Amur honeysuckle is a deciduous shrub that can grow 15-20 feet tall. The leaves are oval shaped, 2-3 inches long covered with downy hairs. The flowers are pinkish to white, tubular, and less than an inch long. The fruit...
July's Weed of the Month is wild carrot (Daucus carota), also known as Queen Anne's lace. It is native to Europe and Asia and was introduced to North America as a vegetable crop. Since its introduction, wild carrot has naturalized and is found in every state, including a large part of Minnesota. Wild carrot is a biennial that grows as a rosette in its first year and flowers in its second year. The stem is hairy, and the leaves are alternate, feathery, and lacy. The flowers are tiny, white, and...
A woody, perennial vine related to grape is June's Weed of the Month. Porcelain berry came to the United States as an ornamental plant from Asia and escaped cultivation. In Minnesota, it is a Restricted Noxious Weed and has been found naturalizing in Rice and Ramsey counties. Though similar to the native grapevine and climbs via tendrils, porcelain berry has characteristics to distinguish it from grapevine. The fruit is a speckled berry that varies in color ranging from blue, pink, purple, and...
Tree of heaven (Ailanthus altissima) is a fast-growing, prolific seed producer that was listed in Minnesota as a Restricted Noxious Weed beginning in 2017. It is native to China and was brought to North America in the late 1700s as an ornamental shade tree. In urban areas, it can cause damage to sewers, pavement, and building foundations; in natural ecosystems, it can establish dense monocultures that outcompete native plants. Tree of heaven looks similar to staghorn sumac, ash, and walnut trees...
Recently added to Minnesota's Restricted Noxious Weed List, crown vetch (Securigera varia) is difficult to control once it is established. It is native to central and Eastern Europe and the Caucus region of Asia. Crown vetch was widely planted as a groundcover, cover crop, and slope stabilizer, but these uses declined due to the invasive nature of the plant. Crown vetch is an herbaceous perennial in the legume family. It has a low, groundcover growth habit. The leaves are dark green and...
September's Weed of the Month is giant knotweed (Polygonum sachalinense). Giant knotweed has hollow, bamboo-like stems and grows over 12 feet tall, making it the largest of the invasive knotweeds. It forms tall, dense thickets that degrade habitats, particularly along riparian areas where it facilitates erosion and flooding. Giant knotweed is native to Asia. It was brought to North America in the 1800s and planted as an ornamental, for erosion control, and as livestock forage. Giant knotweed...
Strategic invasive plant management begins with early detection and rapid response. New infestations are recorded and submitted to a national database. With high priority noxious weeds, collaborations between state and county agencies, landowners, and local partners help to formulate management plans. With the invasive plants on Minnesota's Noxious Weed Eradicate List, small, isolated infestations are targeted before they become widespread. Prioritizing which species to target includes a careful...
June's Weed of the Month is glossy buckthorn (Frangula alnus). Glossy buckthorn is a highly invasive large shrub or small tree native to Europe and Asia. It threatens riparian, wetland, and upland forest areas. Glossy buckthorn forms dense stands that crowds out and completely displaces understory habitats. Glossy buckthorn forms multiple stems as a young plant that develop into a single trunk as it matures. The main stem can be up to 10 inches in diameter, and the cut stem is orange in the...
