Iowa

• Adair 19001
  393 taxa Open ↗
• Adams 19003
  200 taxa Open ↗
• Allamakee 19005
  118 taxa Open ↗
• Appanoose 19007
  38 taxa Open ↗
• Audubon 19009
  225 taxa Open ↗
• Benton 19011
  21 taxa Open ↗
• Black Hawk 19013
  33 taxa Open ↗
• Boone 19015
  146 taxa Open ↗
• Bremer 19017
  24 taxa Open ↗
• Buchanan 19019
  16 taxa Open ↗

Showing 1–50 of 343 (introduced).

• 
  Abutilon theophrasti Medik. Introduced ABTH

  velvetleaf · Malvaceae 10 counties
• 
  Achillea millefolium L. var. millefolium Introduced ACMIM2

  common yarrow · Asteraceae 3 counties
• 
  Acorus calamus L. Introduced ACCA4

  calamus · Acoraceae 9 counties
• 
  Aegilops cylindrica Host Introduced AECY

  jointed goatgrass · Poaceae 4 counties
• 
  Aesculus hippocastanum L. Introduced AEHI

  horse chestnut · Hippocastanaceae 1 county
• 
  Agropyron cristatum (L.) Gaertn. Introduced AGCR

  crested wheatgrass · Poaceae 4 counties
• 
  Agropyron cristatum (L.) Gaertn. ssp. pectinatum (M. Bieb.) Tzvelev Introduced AGCRP8

  crested wheatgrass · Poaceae 4 counties
• 
  Agrostemma githago L. Introduced AGGI

  common corncockle · Caryophyllaceae 3 counties
• 
  Agrostis gigantea Roth Introduced AGGI2

  redtop · Poaceae 5 counties
• 
  Agrostis stolonifera L. Introduced AGST2

  creeping bentgrass · Poaceae 37 counties
• 
  Ailanthus altissima (Mill.) Swingle Introduced AIAL

  tree of heaven · Simaroubaceae 2 counties
• 
  Alcea rosea L. Introduced ALRO3

  hollyhock · Malvaceae 2 counties
• 
  Alliaria petiolata (M. Bieb.) Cavara & Grande Introduced ALPE4

  garlic mustard · Brassicaceae 2 counties
• 
  Allium porrum L. Introduced ALPO2

  garden leek · Liliaceae 1 county
• 
  Allium vineale L. Introduced ALVI

  wild garlic · Liliaceae 2 counties
• 
  Allium vineale L. ssp. vineale Introduced ALVIV

  wild garlic · Liliaceae 2 counties
• 
  Althaea officinalis L. Introduced ALOF2

  common marshmallow · Malvaceae 1 county
• 
  Amaranthus albus L. Introduced AMAL

  prostrate pigweed · Amaranthaceae 5 counties
• 
  Amaranthus blitoides S. Watson Introduced AMBL

  mat amaranth · Amaranthaceae 13 counties
• 
  Ambrosia artemisiifolia L. var. elatior (L.) Descourtils Introduced AMARE

  annual ragweed · Asteraceae 17 counties
• 
  Anethum graveolens L. Introduced ANGR2

  dill · Apiaceae 4 counties
• 
  Anthemis cotula L. Introduced ANCO2

  stinking chamomile · Asteraceae 19 counties
• 
  Arabidopsis thaliana (L.) Heynh. Introduced ARTH

  mouseear cress · Brassicaceae 1 county
• 
  Arctium lappa L. Introduced ARLA3

  greater burdock · Asteraceae 1 county
• 
  Arctium minus Bernh. Introduced ARMI2

  lesser burdock · Asteraceae 10 counties
• 
  Arenaria serpyllifolia L. Introduced ARSE2

  thymeleaf sandwort · Caryophyllaceae 1 county
• 
  Armoracia rusticana G. Gaertn., B. Mey. & Scherb. Introduced ARRU4

  horseradish · Brassicaceae 8 counties
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl Introduced AREL3

  tall oatgrass · Poaceae 2 counties
• 
  Artemisia annua L. Introduced ARAN3

  sweet sagewort · Asteraceae 1 county
• 
  Artemisia biennis Willd. var. biennis Introduced ARBIB

  biennial wormwood · Asteraceae 14 counties
• 
  Asparagus officinalis L. Introduced ASOF

  garden asparagus · Liliaceae 18 counties
• 
  Atriplex patula L. Introduced ATPA4

  spear saltbush · Chenopodiaceae 5 counties
• 
  Atriplex rosea L. Introduced ATRO

  tumbling saltweed · Chenopodiaceae 1 county
• 
  Avena fatua L. Introduced AVFA

  wild oat · Poaceae 7 counties
• 
  Avena sativa L. Introduced AVSA

  common oat · Poaceae 4 counties
• 
  Barbarea vulgaris W.T. Aiton Introduced BAVU

  garden yellowrocket · Brassicaceae 8 counties
• 
  Bassia scoparia (L.) A.J. Scott Introduced BASC5

  burningbush · Chenopodiaceae 14 counties
• 
  Belamcanda chinensis (L.) DC. Introduced BECH

  blackberry lily · Iridaceae 7 counties
• 
  Berberis thunbergii DC. Introduced BETH

  Japanese barberry · Berberidaceae 2 counties
• 
  Berberis vulgaris L. Introduced BEVU

  common barberry · Berberidaceae 1 county
• 
  Berteroa incana (L.) DC. Introduced BEIN2

  hoary alyssum · Brassicaceae 10 counties
• 
  Borago officinalis L. Introduced BOOF

  common borage · Boraginaceae 1 county
• 
  Brassica juncea (L.) Czern. Introduced BRJU

  brown mustard · Brassicaceae 6 counties
• 
  Brassica napus L. Introduced BRNA

  rape · Brassicaceae 1 county
• 
  Brassica nigra (L.) W.D.J. Koch Introduced BRNI

  black mustard · Brassicaceae 20 counties
• 
  Brassica rapa L. Introduced BRRA

  field mustard · Brassicaceae 1 county
• 
  Brassica rapa L. var. rapa Introduced BRRAR

  field mustard · Brassicaceae 1 county
• 
  Bromus arvensis L. Introduced BRAR5

  field brome · Poaceae 41 counties
• 
  Bromus inermis Leyss. ssp. inermis Introduced BRINI

  smooth brome · Poaceae 40 counties
• 
  Bromus inermis Leyss. ssp. inermis var. inermis Introduced BRINI2

  smooth brome · Poaceae 40 counties