Weedy and Aggressive Plant Species Native to Wisconsin

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Scientific NameCommon NameGrowth FormCLife HistoryWISHabitat
Acalypha rhomboideaThree-seeded-mercuryForb0AnnualFACUFull to part sun; dry to moist; woods, disturbed sites, gardens
Acer negundoBox elderTree0PerennialFACW-Moist; rich soil
Acer saccharinumSilver mapleTree2PerennialFACWMoist to wet; often on riverbanks
Achillea millefoliumCommon yarrow, MilfoilForb1PerennialFACUA wide variety of disturbed sites
Agrimonia gryposepalaCommon agrimonyForb2PerennialFACU+Partial sun; dry to moist; woods, forests
Allium canadenseWild onionForb4PerennialFACU Dry, moderate moisture, to wet; open woods, prairies
Alnus incanaSpeckled alderShrub4PerennialOBLMoist to wet; streambanks, lakeshores, bogs, swamps, swales and roadsides
Amaranthus retroflexusCommon amaranth, PigweedForb0AnnualFACU+Disturbed sites
Amaranthus tuberculatusRough-fruited amaranthForb3AnnualOBLMoist; usually ditches and shores
Amaranthus albusWhite amaranthForb0AnnualFACUDisturbed sites
Ambrosia artemisiifoliaCommon ragweedForb0AnnualFACUDisturbed sites
Ambrosia trifidaGiant ragweedForb0AnnualFAC+Moist; disturbed sites
Ambrosia psilostachyaPerennial ragweedForb2PerennialFAC-Dry; prairies, disturbed sites; in sandy soil
Andropogon gerardiiBig bluestemGrass4PerennialFAC-Full sun; dry, moderate moisture, to wet; prairies; in sandy, loamy soil
Anemone canadensisCanada anemoneForb4PerennialFACWFull to partial sun; wet to moderate moisture; meadows, prairies, shores; in sandy, loamy soil
Apocynum androsaemifoliumSpreading dogbaneForb2PerennialUplUpland woods
Arabis lyrataLyrate rock-cressForb4Biennial/PerennialFACU-Dry; woods, fields, rocks; in rocky, sandy soil
Asclepias syriacaCommon milkweedForb1PerennialUplFull to partial sun; dry to wet; meadows, fields, prairies; in sandy, loamy soil
Asclepias verticillataWhorled milkweedForb2PerennialUplDry; prairies, fields, roadsides, woods; in sandy soil; spreading northward
Aster sagittifoliusArrow-leaved asterForb3PerennialUplPartial sun to shade; dry to moderate moisture; woods, disturbed sites, streambanks; in sandy, loamy soil
Aster lateriflorusCalico asterForb3PerennialFACW-Full to partial sun; dry to moderate moisture; fields, clearings, shores; in sandy, loamy, clayey soil
Aster pilosusFrost asterForb1PerennialFACU+Full sun; dry; prairies, disturbed sites; in sandy, gravelly soil
Aster ericoidesHeath asterForb4PerennialFACU-Full sun; dry to moderate moisture; meadows, prairies; in sandy, loamy soil
Aster novae-angliaeNew England asterForb3PerennialFACWFull to partial sun; moderate moisture to moist; meadows, prairies; in sandy, loamy soil
Aster lanceolatusWhite panicle asterForb4PerennialNIPartial sun to shade; moist; low areas, woods
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Headings and Acronyms Explained

Heading Meaning
Growth Form: Forb
Forbs and herbaceous vines
  Grass Grass-like and sedge-like monocots

Shrub
Shrubs
  Tree Trees
C Coefficient of Conservatism
WIS Wetland indicator or status
 Habitat   This Information was obtained from the University of Wisconsin - Stevens Point, Robert W. Freckmann Herbarium website when available.

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