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MILKWEEDS OF NORTHEASTERN UNITED STATES

Region includes Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, and Wisconsin.

This table was compiled with information from various sources including the Biota of North American Program, Lady Bird Johnson Wildflower Center (University of Texas at Austin), U.S. Department of Agriculture PLANTS Database, U.S. Fish & Wildlife Service Environmental Conservation Online System, and Xerces Society. Subspecies are not included. 

Connecticut

  1. Asclepias exaltata - Poke milkweed
  2. Asclepias incarnata - Swamp milkweed
  3. Asclepias purpurascens - Purple milkweed
  4. Asclepias rubra - Red milkweed
  5. Asclepias quadrifolia - Fourleaf milkweed
  6. Asclepias syriaca - Common milkweed
  7. Asclepias tuberosa - Butterfly milkweed
  8. Asclepias viridiflora - Green Comet milkweed

Massachusetts

  1. Asclepias amplexicaulis - Clasping milkweed
  2. Asclepias exaltata - Poke milkweed
  3. Asclepias incarnata - Swamp milkweed
  4. Asclepias purpurascens - Purple milkweed
  5. Asclepias quadrifolia - Fourleaf milkweed
  6. Asclepias syriaca - Common milkweed
  7. Asclepias tuberosa - Butterfly milkweed

Pennsylvania

  1. Asclepias amplexicaulis - Clasping milkweed
  2. Asclepias exaltata - Poke milkweed
  3. Asclepias incarnata - Swamp milkweed
  4. Asclepias purpurascens - Purple milkweed
  5. Asclepias quadrifolia - Fourleaf milkweed
  6. Asclepias rubra - Red milkweed
  7. Asclepias syriaca - Common milkweed
  8. Asclepias tuberosa - Butterfly milkweed
  9. Asclepias variegata - Redring milkweed

    Delaware

    1. Asclepias amplexicaulis - Clasping milkweed
    2. Asclepias exaltata - Poke milkweed
    3. Asclepias incarnata - Swamp milkweed
    4. Asclepias purpurascens - Purple milkweed
    5. Asclepias quadrifolia - Fourleaf milkweed
    6. Asclepias rubra - Red milkweed
    7. Asclepias syriaca - Common milkweed
    8. Asclepias tuberosa - Butterfly milkweed
    9. Asclepias variegata - Redring milkweed
    10. Asclepias viridiflora - Green Comet milkweed

    Michigan

    1. Asclepias amplexicaulis - Clasping milkweed
    2. Asclepias exaltata - Poke Milkweed
    3. Asclepias hirtella - Green milkweed
    4. Asclepias incarnata - Swamp milkweed
    5. Asclepias lanuginosa - Sidecluster milkweed
    6. Asclepias ovalifolia - Oval-leaf milkweed
    7. Asclepias purpurascens - Purple Milkweed
    8. Asclepias quadrifolia - Fourleaf milkweed
    9. Asclepias speciosa - Showy milkweed
    10. Asclepias sullivantii - Prairie milkweed
    11. Asclepias syriaca - Common milkweed
    12. Asclepias tuberosa - Butterfly milkweed
    13. Asclepias viridiflora - Green Comet milkweed

    Rhode Island

    1. Asclepias amplexicaulis - Clasping milkweed
    2. Asclepias exaltata - Poke milkweed
    3. Asclepias incarnata - Swamp milkweed
    4. Asclepias purpurascens - Purple milkweed
    5. Asclepias quadrifolia - Fourleaf milkweed
    6. Asclepias syriaca - Common milkweed
    7. Asclepias tuberosa - Butterfly milkweed

      Illinois

      1. Asclepias amplexicaulis - Clasping milkweed
      2. Asclepias exaltata - Poke milkweed
      3. Asclepias hirtella - Green milkweed
      4. Asclepias incarnata - Swamp milkweed
      5. Asclepias lanuginosa - Sidecluster milkweed
      6. Asclepias ovalifolia - Oval-leaf milkweed
      7. Asclepias purpurascens - Purple milkweed
      8. Asclepias quadrifolia - Fourleaf milkweed
      9. Asclepias speciosa - Showy Milkweed
      10. Asclepias stenophylla - Slimleaf milkweed
      11. Asclepias syriaca - Common milkweed
      12. Asclepias tuberosa - Butterfly milkweed
      13. Asclepias variegata - Redring milkweed
      14. Asclepias viridiflora - Green Comet milkweed
      15. Asclepias viridis - Green Antelopehorn milkweed

      Minnesota

      1. Asclepias amplexicaulis - Clasping milkweed
      2. Asclepias exaltata - Poke milkweed
      3. Asclepias hirtella - Green milkweed
      4. Asclepias ovalifolia - Oval-leaf Milkweed
      5. Asclepias incarnata - Swamp milkweed
      6. Asclepias purpurascens - Purple milkweed
      7. Asclepias quadrifolia - Fourleaf milkweed
      8. Asclepias speciosa - Showy milkweed
      9. Asclepias stenophylla - Slimleaf milkweed
      10. Asclepias sullivantii - Prairie milkweed
      11. Asclepias syriaca - Common milkweed
      12. Asclepias tuberosa - Butterfly milkweed
      13. Asclepias viridiflora - Green Comet milkweed

      Vermont

      1. Asclepias amplexicaulis - Clasping milkweed
      2. Asclepias exaltata - Poke milkweed
      3. Asclepias incarnata - Swamp milkweed
      4. Asclepias quadrifolia - Fourleaf milkweed
      5. Asclepias syriaca - Common milkweed
      6. Asclepias tuberosa - Butterfly milkweed

        Indiana

        1. Asclepias amplexicaulis - Clasping milkweed
        2. Asclepias exaltata - Poke milkweed
        3. Asclepias hirtella - Green milkweed
        4. Asclepias incarnata - Swamp milkweed
        5. Asclepias purpurascens - Purple milkweed
        6. Asclepias quadrifolia - Fourleaf milkweed
        7. Asclepias sullivantii - Prairie milkweed
        8. Asclepias syriaca - Common milkweed
        9. Asclepias tuberosa - Butterfly milkweed
        10. Asclepias variegata - Redring milkweed
        11. Asclepias viridiflora - Green Comet milkweed
        12. Asclepias viridis - Green Antelopehorn milkweed

        Missouri

        1. Asclepias amplexicaulis - Clasping milkweed
        2. Asclepias hirtella - Green milkweed
        3. Asclepias incarnata - Swamp milkweed
        4. Asclepias purpurascens - Purple milkweed
        5. Asclepias quadrifolia - Fourleaf milkweed
        6. Asclepias stenophylla - Slimleaf milkweed
        7. Asclepias subverticillata - Horsetail milkweed
        8. Asclepias sullivantii - Prairie milkweed
        9. Asclepias syriaca - Common milkweed
        10. Asclepias tuberosa - Butterfly milkweed
        11. Asclepias variegata - Redring milkweed

        Virginia

        1. Asclepias amplexicaulis - Clasping milkweed
        2. Asclepias exaltata - Poke milkweed
        3. Asclepias incarnata - Swamp milkweed
        4. Asclepias purpurascens - Purple milkweed
        5. Asclepias quadrifolia - Fourleaf milkweed
        6. Asclepias rubra - Red milkweed
        7. Asclepias syriaca - Common milkweed
        8. Asclepias tuberosa - Butterfly milkweed

        Iowa

        1. Asclepias amplexicaulis - Clasping milkweed
        2. Asclepias engelmanniana - Englemann's milkweed
        3. Asclepias exaltata - Poke milkweed
        4. Asclepias hirtella - Green milkweed
        5. Asclepias incarnata - Swamp milkweed
        6. Asclepias lanuginosa - Sidecluster milkweed
        7. Asclepias ovalifolia - Oval-leaf milkweed
        8. Asclepias pumila - Plains milkweed
        9. Asclepias purpurascens - Purple milkweed
        10. Asclepias quadrifolia - Fourleaf milkweed
        11. Asclepias speciosa - Showy milkweed
        12. Asclepias stenophylla - Slimleaf milkweed
        13. Asclepias sullivantii - Prairie milkweed
        14. Asclepias syriaca - Common milkweed
        15. Asclepias tuberosa - Butterfly milkweed
        16. Asclepias viridiflora - Green Comet milkweed

          New Hampshire

          1. Asclepias amplexicaulis - Clasping milkweed
          2. Asclepias exaltata - Poke Milkweed
          3. Asclepias incarnata - Swamp milkweed
          4. Asclepias purpurascens - Purple milkweed
          5. Asclepias quadrifolia - Fourleaf milkweed
          6. Asclepias syriaca - Common milkweed
          7. Asclepias tuberosa - Butterfly milkweed

          West Virginia

          1. Asclepias amplexicaulis - Clasping milkweed
          2. Asclepias exaltata - Poke milkweed
          3. Asclepias hirtella - Green milkweed
          4. Asclepias incarnata - Swamp milkweed
          5. Asclepias purpurascens - Purple milkweed
          6. Asclepias quadrifolia - Fourleaf milkweed
          7. Asclepias syriaca - Common milkweed
          8. Asclepias tuberosa - Butterfly milkweed

            Kentucky

            1. Asclepias amplexicaulis - Clasping Milkweed
            2. Asclepias exaltata - Poke Milkweed
            3. Asclepias hirtella - Green Milkweed
            4. Asclepias incarnata - Swamp or Rose Milkweed
            5. Asclepias purpurascens - Purple Milkweed
            6. Asclepias quadrifolia - Fourleaf Milkweed
            7. Asclepias syriaca - Common Milkweed
            8. Asclepias tuberosa - Butterflyweed
            9. Asclepias variegata - Redring Milkweed
            10. Asclepias viridiflora - Green Comet Milkweed

            New Jersey

            1. Asclepias amplexicaulis - Clasping Milkweed
            2. Asclepias exaltata - Poke Milkweed
            3. Asclepias quadrifolia - Fourleaf Milkweed
            4. Asclepias incarnata - Swamp or Rose Milkweed
            5. Asclepias purpurascens - Purple Milkweed
            6. Asclepias rubra - Red Milkweed
            7. Asclepias syriaca - Common Milkweed
            8. Asclepias tuberosa - Butterflyweed

            Wisconsin

            1. Asclepias amplexicaulis - Clasping Milkweed
            2. Asclepias exaltata - Poke Milkweed
            3. Asclepias hirtella - Green Milkweed
            4. Asclepias incarnata - Swamp or Rose Milkweed
            5. Asclepias ovalifolia - Oval-leaf Milkweed
            6. Asclepias lanuginosa - Sidecluster Milkweed
            7. Asclepias purpurascens - Purple Milkweed
            8. Asclepias quadrifolia - Fourleaf Milkweed
            9. Asclepsias speciosa - Showy Milkweed
            10. Asclepias syriaca - Common Milkweed
            11. Asclepias tuberosa - Butterflyweed

              Maine

              1. Asclepias exaltata - Poke Milkweed
              2. Asclepias incarnata - Swamp or Rose Milkweed
              3. Asclepias quadrifolia - Fourleaf Milkweed
              4. Asclepias syriaca - Common Milkweed
              5. Asclepias tuberosa - Butterflyweed

              New York

              1. Asclepias amplexicaulis - Clasping Milkweed
              2. Asclepias exaltata - Poke Milkweed
              3. Asclepias incarnata - Swamp or Rose Milkweed
              4. Asclepias purpurascens - Purple Milkweed
              5. Asclepias quadrifolia - Fourleaf Milkweed
              6. Asclepias rubra - Red Milkweed
              7. Asclepias syriaca - Common Milkweed
              8. Asclepias tuberosa - Butterflyweed
              9. Asclepias variegata - Redring Milkweed

                Maryland

                1. Asclepias amplexicaulis - Clasping Milkweed
                2. Asclepias exaltata - Poke Milkweed
                3. Asclepias incarnata - Swamp or Rose Milkweed
                4. Asclepias purpurascens - Purple Milkweed
                5. Asclepias quadrifolia - Fourleaf Milkweed
                6. Asclepias rubra - Red Milkweed
                7. Asclepias syriaca - Common Milkweed
                8. Asclepias variegata - Redring Milkweed
                9. Asclepias tuberosa - Butterflyweed
                10. Asclepias viridiflora - Green Comet Milkweed

                Ohio

                1. Asclepias amplexicaulis - Clasping Milkweed
                2. Asclepias exaltata - Poke Milkweed
                3. Asclepias incarnata - Swamp or Rose Milkweed
                4. Asclepias purpurascens - Purple Milkweed
                5. Asclepias quadrifolia - Fourleaf Milkweed
                6. Asclepias sullivantii - Prairie Milkweed
                7. Asclepias syriaca - Common Milkweed
                8. Asclepias tuberosa - Butterflyweed
                9. Asclepias variegata - Redring Milkweed