Observation Tools

Common milkweed Photo courtesy of Jessica Helmbold, Patuxent NWR.

Common milkweed (Asclepias syriaca)


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

Identification Hints: Common milkweed is the host plant for the monarch butterfly life cycle. The milky sap or latex inside this plant, eaten by monarch caterpillars, is what makes the animal toxic to predators. This tall wildflower produces a globe of unique looking soft pink flowers.

Did you Know? Fibers pulled from the dead stems of Common milkweed can be used to create cord and rope. Many Native American tribes used parts of the milkweed plant to treat ailments. However, ingesting any part ofCommon milkweed can be toxic if not prepared properly.


Live Map for Common milkweed

Other years available for viewing:

Below you can view all observations that have been reported in for Common 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.

The Search box allows you to search all of the data. Searching by date, species, phenophase, etc. is easy—just start typing and the table will immediately change to contain only observations that contain your search phrase. Do you want to see only 2012 observations? Just type "2012" in the search box. Only want to see maples? Enter "Acer." You can combine searches, too! Searching for "acer 2012" will narrow your results to only the maples that were observed in 2012 (assuming that any observations exist, of course).

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 Common milkweed:

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Date Contributor Common Name Species Phenophase Latitude Longitude Obs#
Wed May 30 00:00:00 GMT 2012 snewman14 Common milkweed Asclepias syriaca Flowers (Early) 40.539800000000000 -105.115000000000000 15826
Mon Sep 10 00:00:00 GMT 2012 kayrihavens Common milkweed Asclepias syriaca Fruit (Early) 43.045100000000000 -87.893000000000000 16574
Thu Jun 06 00:00:00 GMT 2013 Patuxent-BB Common milkweed Asclepias syriaca First Flower 39.026700000000000 -76.799000000000000 21047
Wed Jun 12 00:00:00 GMT 2013 Patuxent-BB Common milkweed Asclepias syriaca Full Flower 39.026700000000000 -76.799000000000000 21160
Fri Jun 21 00:00:00 GMT 2013 Seedling Common milkweed Asclepias syriaca Full Flower 42.118200000000000 -71.431600000000000 21412
Sat Jun 22 00:00:00 GMT 2013 Emmyaf Common milkweed Asclepias syriaca First Flower 42.539700000000000 -76.467100000000000 21419
Wed Jun 26 00:00:00 GMT 2013 Emmyaf Common milkweed Asclepias syriaca Full Flower 42.539700000000000 -76.467100000000000 21416
Sat Jun 29 00:00:00 GMT 2013 ecology Common milkweed Asclepias syriaca Flowers (Early) 43.439200000000000 -88.024300000000000 21447
Wed Jul 10 00:00:00 GMT 2013 Maplerun Common milkweed Asclepias syriaca First Flower 45.696100000000000 -89.633900000000000 21537
Mon Jun 24 00:00:00 GMT 2013 reinsteinwoods Common milkweed Asclepias syriaca First Flower 42.886600000000000 -78.718100000000000 21589
Sat Jun 29 00:00:00 GMT 2013 reinsteinwoods Common milkweed Asclepias syriaca Full Flower 42.886600000000000 -78.718100000000000 21590
Wed Jul 10 00:00:00 GMT 2013 Maplerun Common milkweed Asclepias syriaca Full Flower 45.696100000000000 -89.633900000000000 21648
Mon Jul 15 00:00:00 GMT 2013 Maplerun Common milkweed Asclepias syriaca First Ripe Fruit 45.696100000000000 -89.633900000000000 21649
Mon Sep 09 00:00:00 GMT 2013 Patuxent-BB Common milkweed Asclepias syriaca First Ripe Fruit 39.026700000000000 -76.799000000000000 22064
Sun Sep 15 00:00:00 GMT 2013 Patuxent-BB Common milkweed Asclepias syriaca Full Fruiting 39.026700000000000 -76.799000000000000 22065
Sat Oct 12 00:00:00 GMT 2013 centralNY Common milkweed Asclepias syriaca All Leaves Withered 43.041000000000000 -76.212900000000000 22688
Sun Jun 12 00:00:00 GMT 2016 Patuxent-BB Common milkweed Asclepias syriaca First Flower 39.026700000000000 -76.799000000000000 68350
Sun Jun 19 00:00:00 GMT 2016 Patuxent-BB Common milkweed Asclepias syriaca Full Flower 39.026700000000000 -76.799000000000000 68460
Sat Jun 25 00:00:00 GMT 2016 ecology Common milkweed Asclepias syriaca Flowers (Early) 43.439290000000000 -88.023980000000000 68683
Sat Jun 25 00:00:00 GMT 2016 ecology Common milkweed Asclepias syriaca Fruit (None) 43.439290000000000 -88.023980000000000 68684
Mon Jul 11 00:00:00 GMT 2016 Maplerun Common milkweed Asclepias syriaca First Flower 45.696100000000000 -89.633900000000000 68818
Fri Jul 15 00:00:00 GMT 2016 Maplerun Common milkweed Asclepias syriaca Full Flower 45.696100000000000 -89.633900000000000 68935
Sun Aug 21 00:00:00 GMT 2016 Patuxent-BB Common milkweed Asclepias syriaca All Leaves Withered 39.026700000000000 -76.799000000000000 69626
Wed Sep 21 00:00:00 GMT 2016 westcreek Common milkweed Asclepias syriaca Flowers (None) 41.385567000000000 -81.694819000000000 70008
Wed Sep 21 00:00:00 GMT 2016 westcreek Common milkweed Asclepias syriaca Fruit (Early) 41.385567000000000 -81.694819000000000 70009
Thu Sep 22 00:00:00 GMT 2016 westcreek Common milkweed Asclepias syriaca Flowers (None) 40.000000000000000 -100.000000000000000 70072
Thu Sep 22 00:00:00 GMT 2016 westcreek Common milkweed Asclepias syriaca Fruit (Middle) 40.000000000000000 -100.000000000000000 70073
Thu Jun 09 00:00:00 GMT 2016 Audubon Common milkweed Asclepias syriaca First Flower 40.545200000000000 -79.907400000000000 72226
Thu Jun 23 00:00:00 GMT 2016 Audubon Common milkweed Asclepias syriaca Full Flower 40.545200000000000 -79.907400000000000 72227
Thu Sep 01 00:00:00 GMT 2016 Audubon Common milkweed Asclepias syriaca First Ripe Fruit 40.545200000000000 -79.907400000000000 72228
Thu Oct 06 00:00:00 GMT 2016 Audubon Common milkweed Asclepias syriaca Full Fruiting 40.545200000000000 -79.907400000000000 72229
Tue Oct 18 00:00:00 GMT 2016 Audubon Common milkweed Asclepias syriaca All Leaves Withered 40.545200000000000 -79.907400000000000 72230
Thu Jun 02 00:00:00 GMT 2016 reinsteinwoods Common milkweed Asclepias syriaca First Flower 42.886600000000000 -78.718100000000000 74352
Thu Jun 30 00:00:00 GMT 2016 reinsteinwoods Common milkweed Asclepias syriaca Full Flower 42.886600000000000 -78.718100000000000 74353
Wed Jul 13 00:00:00 GMT 2016 reinsteinwoods Common milkweed Asclepias syriaca First Ripe Fruit 42.886600000000000 -78.718100000000000 74354
Sun Aug 21 00:00:00 GMT 2016 reinsteinwoods Common milkweed Asclepias syriaca Full Fruiting 42.886600000000000 -78.718100000000000 74355
Sun Oct 30 00:00:00 GMT 2016 reinsteinwoods Common milkweed Asclepias syriaca All Leaves Withered 42.886600000000000 -78.718100000000000 74356

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