Observation Tools

Butterfly milkweed Photo courtesy of USFWS Trempealeau National Wildlife Refuge.

Butterfly milkweed (Asclepias tuberosa)


Plant Family: Milkweed (Asclepiadaceae)
Project BudBurst Plant Group: Wildflowers and Herbs

Identification Hints: A showy orange milkweed with long lasting flowers which is a popular garden plant for attracting butterflies andbees. It is a widespread native in the Midwest, eastern US and Southwest. Unique in its orange flowers and clear sap.

Did you Know? Milkweed fibers have been used by NativeAmericans in textiles, rope, fabric, yarn and cloth. Butterfly milkweed contains cardiac glycosides, which are toxic to people as well as cattle, so do not ingest milkweed! Monarch butterflies rely on milkweed plants for their caterpillars. The caterpilars ingest the toxins from the milkweed plants and use it as a defense mechanism against predators. Monarch butterflies do not taste good to predators!


Live Map for Butterfly milkweed

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Below you can view all observations that have been reported in for Butterfly milkweed (If the map below is empty then there have not been any observations reported.)

Use the navigation buttons on the left to zoom in/out and pan around. Click on each place marker to get detail information about that observation.

Leaf/Needles/Stalk = Leaf/Needles/Stalk Flower = Flower Pollen = Pollen Fruiting = Fruiting Color = Color

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The table below displays all the data that has been submitted to Project BudBurst. By default, the data is sorted by the date on which the phenophase occurred. Clicking the up and down arrows next to each column name allows you to sort on any value. If there have been more than 10 observations submitted, you can choose how many to display at a time using the "Show __ entries" control. You can also page through the data using the previous and next buttons at the bottom right of the table.

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Once you have your results in the order desired, you can use any of the buttons above the search box to copy the results to the clipboard; save them as a text, or spreadsheet; or even print them from your browser!

Observational data for Butterfly milkweed:

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Date Contributor Common Name Species Phenophase Latitude Longitude Obs#
Wed Jul 07 00:00:00 GMT 2010 bagdonasp_@hotmail.com Butterfly milkweed Asclepias tuberosa First Flower 42.147800000000000 -87.789200000000000 11030
Mon Sep 19 00:00:00 GMT 2011 jankilgore@msn.com Butterfly milkweed Asclepias tuberosa Fruit (Middle) 40.210000000000000 -105.360000000000000 13303
Sat Sep 17 00:00:00 GMT 2011 ash Butterfly milkweed Asclepias tuberosa Fruit (Middle) 38.833600000000000 -77.069800000000000 13497
Fri Jun 22 00:00:00 GMT 2012 worthaton Butterfly milkweed Asclepias tuberosa Flowers (Middle) 40.560000000000000 -105.085000000000000 16402
Sat Jul 21 00:00:00 GMT 2012 worthaton Butterfly milkweed Asclepias tuberosa Flowers (Late) 40.560000000000000 -105.085000000000000 16403
Tue Jun 26 00:00:00 GMT 2012 McCoyRdE-Way01 Butterfly milkweed Asclepias tuberosa First Flower 43.106200000000000 -89.348800000000000 17925
Fri May 31 00:00:00 GMT 2013 Seedling Butterfly milkweed Asclepias tuberosa First Flower 42.118200000000000 -71.431600000000000 20868
Sun Jun 16 00:00:00 GMT 2013 Seedling Butterfly milkweed Asclepias tuberosa Full Flower 42.118200000000000 -71.431600000000000 21180
Tue Jun 18 00:00:00 GMT 2013 nflower Butterfly milkweed Asclepias tuberosa Flowers (Early) 40.299200000000000 -75.158800000000000 21201
Wed Jun 26 00:00:00 GMT 2013 csaari Butterfly milkweed Asclepias tuberosa Flowers (Middle) 41.823500000000000 -88.732300000000000 21409
Sat Jun 29 00:00:00 GMT 2013 ecology Butterfly milkweed Asclepias tuberosa Flowers (Early) 43.439200000000000 -88.024300000000000 21448
Tue Jul 09 00:00:00 GMT 2013 flaubent Butterfly milkweed Asclepias tuberosa Flowers (Middle) 30.563000000000000 -97.578400000000000 21499
Wed Jul 10 00:00:00 GMT 2013 Nativegardener Butterfly milkweed Asclepias tuberosa First Flower 44.281500000000000 -93.271800000000000 21517
Sat Jul 06 00:00:00 GMT 2013 Semcdonald Butterfly milkweed Asclepias tuberosa Full Flower 38.871700000000000 -78.846700000000000 21513
Mon Jun 10 00:00:00 GMT 2013 Angelyn Butterfly milkweed Asclepias tuberosa First Flower 35.619100000000000 -82.765100000000000 21642
Sat Jun 15 00:00:00 GMT 2013 Angelyn Butterfly milkweed Asclepias tuberosa Full Flower 35.619100000000000 -82.765100000000000 21643
Sun Sep 08 00:00:00 GMT 2013 emily_porter Butterfly milkweed Asclepias tuberosa Fruit (Early) 38.887200000000000 -77.013100000000000 21980
Tue Sep 10 00:00:00 GMT 2013 usbg Butterfly milkweed Asclepias tuberosa Flowers (Middle) 38.888100000000000 -77.012900000000000 21989
Tue Sep 10 00:00:00 GMT 2013 usbg Butterfly milkweed Asclepias tuberosa Flowers (Middle) 38.888100000000000 -77.012900000000000 21998
Tue Sep 10 00:00:00 GMT 2013 usbg Butterfly milkweed Asclepias tuberosa Flowers (Middle) 38.888100000000000 -77.012900000000000 21999
Sat Sep 14 00:00:00 GMT 2013 Clebeau Butterfly milkweed Asclepias tuberosa Fruit (Middle) 38.888000000000000 -77.014200000000000 22056
Sat Sep 14 00:00:00 GMT 2013 jocelynbethany Butterfly milkweed Asclepias tuberosa Fruit (Middle) 38.888000000000000 -77.014200000000000 22074
Tue Sep 10 00:00:00 GMT 2013 gardenkeeper Butterfly milkweed Asclepias tuberosa Flowers (Middle) 38.888000000000000 -77.014200000000000 22088
Sat Oct 05 00:00:00 GMT 2013 dwagner Butterfly milkweed Asclepias tuberosa Flowers (Late) 27.984800000000000 -81.971000000000000 22490
Tue Oct 08 00:00:00 GMT 2013 St Paul Tree Trek Butterfly milkweed Asclepias tuberosa Full Flower 27.984800000000000 -81.971000000000000 22531
Tue Oct 29 00:00:00 GMT 2013 centralNY Butterfly milkweed Asclepias tuberosa First Ripe Fruit 43.041000000000000 -76.212900000000000 22835
Sun Nov 03 00:00:00 GMT 2013 centralNY Butterfly milkweed Asclepias tuberosa Full Fruiting 43.041000000000000 -76.212900000000000 22918
Fri Aug 02 00:00:00 GMT 2013 ncmns Butterfly milkweed Asclepias tuberosa Flowers (Late) 35.811700000000000 -78.713900000000000 23065
Thu Dec 26 00:00:00 GMT 2013 dwagner Butterfly milkweed Asclepias tuberosa Full Flower 27.984800000000000 -81.971000000000000 24575
Thu Jun 27 00:00:00 GMT 2013 McCoyRdE-Way01 Butterfly milkweed Asclepias tuberosa First Flower 43.106200000000000 -89.348800000000000 25544
Tue Jul 02 00:00:00 GMT 2013 McCoyRdE-Way01 Butterfly milkweed Asclepias tuberosa Full Flower 43.106200000000000 -89.348800000000000 25545
Sat Sep 14 00:00:00 GMT 2013 Angelyn Butterfly milkweed Asclepias tuberosa First Ripe Fruit 35.619100000000000 -82.765100000000000 25623
Tue Oct 08 00:00:00 GMT 2013 Angelyn Butterfly milkweed Asclepias tuberosa Full Fruiting 35.619100000000000 -82.765100000000000 25624
Sat Oct 12 00:00:00 GMT 2013 Angelyn Butterfly milkweed Asclepias tuberosa All Leaves Withered 35.619100000000000 -82.765100000000000 25625
Wed Mar 12 00:00:00 GMT 2014 kaji1234 Butterfly milkweed Asclepias tuberosa Flowers (None) 38.402100000000000 -122.824000000000000 27277
Wed Mar 12 00:00:00 GMT 2014 kaji1234 Butterfly milkweed Asclepias tuberosa Fruit (None) 38.402100000000000 -122.824000000000000 27278
Thu Mar 20 00:00:00 GMT 2014 abigailross Butterfly milkweed Asclepias tuberosa Flowers (Middle) 34.057200000000000 -118.242000000000000 27306
Thu Mar 20 00:00:00 GMT 2014 abigailross Butterfly milkweed Asclepias tuberosa Fruit (None) 34.057200000000000 -118.242000000000000 27307
Sun Jun 08 00:00:00 GMT 2014 bayfawn Butterfly milkweed Asclepias tuberosa First Flower 39.448260000000000 -76.267280000000000 33726
Sun Jun 08 00:00:00 GMT 2014 bayfawn Butterfly milkweed Asclepias tuberosa Full Flower 39.448260000000000 -76.267280000000000 34226
Thu Jun 26 00:00:00 GMT 2014 ecology Butterfly milkweed Asclepias tuberosa Flowers (Early) 43.437433000000000 -88.020122000000000 34331
Thu Jun 26 00:00:00 GMT 2014 ecology Butterfly milkweed Asclepias tuberosa Fruit (None) 43.437433000000000 -88.020122000000000 34332
Fri Jul 25 00:00:00 GMT 2014 karessknudtson1 Butterfly milkweed Asclepias tuberosa Flowers (Middle) 43.286859000000000 -95.193915000000000 34699
Fri Jul 25 00:00:00 GMT 2014 karessknudtson1 Butterfly milkweed Asclepias tuberosa Fruit (None) 43.286859000000000 -95.193915000000000 34700
Tue Aug 12 00:00:00 GMT 2014 naturereach Butterfly milkweed Asclepias tuberosa First Ripe Fruit 32.960610000000000 -97.170280000000000 35006
Fri Jun 06 00:00:00 GMT 2014 bettyh Butterfly milkweed Asclepias tuberosa First Flower 38.920400000000000 -77.276500000000000 42948
Sat May 30 00:00:00 GMT 2015 Angelyn Butterfly milkweed Asclepias tuberosa First Flower 35.619100000000000 -82.765100000000000 50787
Fri Jun 05 00:00:00 GMT 2015 Angelyn Butterfly milkweed Asclepias tuberosa Full Flower 35.619100000000000 -82.765100000000000 51045
Sun Jun 07 00:00:00 GMT 2015 lpren398 Butterfly milkweed Asclepias tuberosa First Flower 38.606430000000000 -92.403800000000000 51107
Fri Jun 12 00:00:00 GMT 2015 lpren398 Butterfly milkweed Asclepias tuberosa Full Flower 38.606430000000000 -92.403800000000000 51191
Thu Jun 18 00:00:00 GMT 2015 bayfawn Butterfly milkweed Asclepias tuberosa First Flower 39.448260000000000 -76.267280000000000 51288
Sat Jun 20 00:00:00 GMT 2015 bayfawn Butterfly milkweed Asclepias tuberosa Full Flower 39.448260000000000 -76.267280000000000 51289
Tue Jun 23 00:00:00 GMT 2015 ecology Butterfly milkweed Asclepias tuberosa Flowers (Early) 43.439677000000000 -88.022697000000000 51596
Tue Jun 23 00:00:00 GMT 2015 ecology Butterfly milkweed Asclepias tuberosa Fruit (None) 43.439677000000000 -88.022697000000000 51597
Mon Jun 29 00:00:00 GMT 2015 HarmonyHabitats Butterfly milkweed Asclepias tuberosa Flowers (Middle) 40.330400000000000 -79.878150000000000 51766
Mon Jun 29 00:00:00 GMT 2015 HarmonyHabitats Butterfly milkweed Asclepias tuberosa Fruit (None) 40.330400000000000 -79.878150000000000 51767
Mon Aug 31 00:00:00 GMT 2015 Angelyn Butterfly milkweed Asclepias tuberosa First Ripe Fruit 35.619100000000000 -82.765100000000000 52773
Mon Oct 05 00:00:00 GMT 2015 Angelyn Butterfly milkweed Asclepias tuberosa Full Fruiting 35.619100000000000 -82.765100000000000 54222
Thu Sep 17 00:00:00 GMT 2015 psaunder Butterfly milkweed Asclepias tuberosa Full Fruiting 40.860400000000000 -82.319700000000000 61398
Thu Oct 15 00:00:00 GMT 2015 psaunder Butterfly milkweed Asclepias tuberosa All Leaves Withered 40.860400000000000 -82.319700000000000 61399
Thu Jul 09 00:00:00 GMT 2015 aarongunnar Butterfly milkweed Asclepias tuberosa Flowers (Middle) 44.904523000000000 -91.893854000000000 61768
Thu Jul 09 00:00:00 GMT 2015 aarongunnar Butterfly milkweed Asclepias tuberosa Fruit (None) 44.904523000000000 -91.893854000000000 61769
Fri Jul 03 00:00:00 GMT 2015 aarongunnar Butterfly milkweed Asclepias tuberosa Flowers (Middle) 44.946941000000000 -91.778154000000000 61770
Fri Jul 03 00:00:00 GMT 2015 aarongunnar Butterfly milkweed Asclepias tuberosa Fruit (None) 44.946941000000000 -91.778154000000000 61771
Thu Jun 23 00:00:00 GMT 2016 NatePraeger Butterfly milkweed Asclepias tuberosa First Flower 32.834270000000000 -96.735400000000000 68537
Thu Jun 23 00:00:00 GMT 2016 NatePraeger Butterfly milkweed Asclepias tuberosa Full Flower 32.834270000000000 -96.735400000000000 68538
Thu Jun 23 00:00:00 GMT 2016 NatePraeger Butterfly milkweed Asclepias tuberosa First Ripe Fruit 32.834270000000000 -96.735400000000000 68539
Thu Jun 23 00:00:00 GMT 2016 NatePraeger Butterfly milkweed Asclepias tuberosa Full Fruiting 32.834270000000000 -96.735400000000000 68540
Thu Jun 23 00:00:00 GMT 2016 NatePraeger Butterfly milkweed Asclepias tuberosa All Leaves Withered 32.834270000000000 -96.735400000000000 68541
Thu Jun 23 00:00:00 GMT 2016 NatePraeger Butterfly milkweed Asclepias tuberosa Flowers (Middle) 32.834270000000000 -96.735400000000000 68542
Thu Jun 23 00:00:00 GMT 2016 NatePraeger Butterfly milkweed Asclepias tuberosa Fruit (Middle) 32.834270000000000 -96.735400000000000 68543
Sat Jun 25 00:00:00 GMT 2016 ecology Butterfly milkweed Asclepias tuberosa Flowers (Early) 43.439290000000000 -88.023980000000000 68685
Sat Jun 25 00:00:00 GMT 2016 ecology Butterfly milkweed Asclepias tuberosa Fruit (None) 43.439290000000000 -88.023980000000000 68686
Tue Jul 12 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (Late) 38.614281200000000 -90.258545800000000 68849
Tue Jul 12 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (None) 38.614281200000000 -90.258545800000000 68850
Tue Aug 09 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (Late) 38.614281200000000 -90.258545800000000 69350
Tue Aug 09 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (Late) 38.614281200000000 -90.258545800000000 69351
Wed Aug 17 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (None) 38.614281200000000 -90.258545800000000 69478
Wed Aug 17 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (None) 38.614281200000000 -90.258545800000000 69479
Mon Aug 29 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (Late) 38.614281200000000 -90.258545800000000 69555
Mon Aug 29 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (None) 38.614281200000000 -90.258545800000000 69556
Tue Sep 20 00:00:00 GMT 2016 kzwierstra Butterfly milkweed Asclepias tuberosa Flowers (Late) 32.895290000000000 -96.577310000000000 69941
Tue Sep 20 00:00:00 GMT 2016 kzwierstra Butterfly milkweed Asclepias tuberosa Fruit (Late) 32.895290000000000 -96.577310000000000 69942
Mon Sep 26 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (Late) 38.614281200000000 -90.258545800000000 70229
Mon Sep 26 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (None) 38.614281200000000 -90.258545800000000 70230
Mon Oct 17 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (None) 38.614281200000000 -90.258545800000000 71004
Mon Oct 17 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (None) 38.614281200000000 -90.258545800000000 71005
Mon Nov 21 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (None) 38.614281200000000 -90.258545800000000 73876
Mon Nov 21 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (Late) 38.614281200000000 -90.258545800000000 73877
Mon Dec 12 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (None) 38.614281200000000 -90.258545800000000 74267
Mon Dec 12 00:00:00 GMT 2016 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (Late) 38.614281200000000 -90.258545800000000 74268
Tue Dec 20 00:00:00 GMT 2016 eoneill Butterfly milkweed Asclepias tuberosa Flowers (None) 39.076955000000000 -76.607849000000000 74435
Tue Dec 20 00:00:00 GMT 2016 eoneill Butterfly milkweed Asclepias tuberosa Fruit (None) 39.076955000000000 -76.607849000000000 74436
Tue Jan 31 00:00:00 GMT 2017 bkanoy_MS_Raingarden_reporter21 Butterfly milkweed Asclepias tuberosa Flowers (None) 35.969120000000000 -78.945410000000000 74626
Tue Jan 31 00:00:00 GMT 2017 bkanoy_MS_Raingarden_reporter21 Butterfly milkweed Asclepias tuberosa Fruit (None) 35.969120000000000 -78.945410000000000 74627
Tue Jan 31 00:00:00 GMT 2017 bkanoy_Courtyard_area_reporter2 Butterfly milkweed Asclepias tuberosa Flowers (None) 35.969120000000000 -78.945410000000000 74628
Tue Jan 31 00:00:00 GMT 2017 bkanoy_Courtyard_area_reporter2 Butterfly milkweed Asclepias tuberosa Fruit (None) 35.969120000000000 -78.945410000000000 74629
Tue Feb 07 00:00:00 GMT 2017 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (None) 38.614281200000000 -90.258545800000000 74774
Tue Feb 07 00:00:00 GMT 2017 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (None) 38.614281200000000 -90.258545800000000 74775
Wed Jul 06 00:00:00 GMT 2016 rivertrailnc Butterfly milkweed Asclepias tuberosa First Flower 42.096100000000000 -87.879300000000000 74907
Wed Jul 06 00:00:00 GMT 2016 rivertrailnc Butterfly milkweed Asclepias tuberosa Full Flower 42.096100000000000 -87.879300000000000 74908
Mon Mar 13 00:00:00 GMT 2017 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Flowers (None) 38.614281200000000 -90.258545800000000 75595
Mon Mar 13 00:00:00 GMT 2017 MBGYouthandFamily Butterfly milkweed Asclepias tuberosa Fruit (None) 38.614281200000000 -90.258545800000000 75596

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