Native Milkweeds in Chicagoland (listed by county)

Milkweeds: Native by County-IL

MILKPLANT SPECIES Cook DuPage Kane Kendall   Lake McHenry Will All 7 Counties
A. amplexicaulis X X X X   X X X 7
A. exaltata X X X X   X X X 7
A. hirtella X X       X X X 5
A. incarnata X X X X   X X X 7
A. lanuginosa X X X     X X X 6
A. meadii X X             2
A. ovalifolia X     X   X X   4
A. perennis                  
A. purpurascens X X X X   X X X 7
A. quadrifolia                  
A. speciosa X               1
A. stenophylla                  
A. sullivantii X X X X   X X X 7
A. syriaca X X X X   X X X 7
A. tuberosa X X X X   X X X 7
A. variegata                  
A. verticillata X X X X   X X X 7
A. viridiflora X X X X   X X X 7
A. viridis                  
C. leave       X       X 2
Total number of species per county 14 12 10 11   12 12 12 15 *

* 15 native milkweed species in the 7 Illinois counties of Chicagoland, 9 of which were ubiquitous.

Source: milkweed@monarchwatch.org

Swamp milkweed closeup

Marsh milkweed (Asclepia incarnata)

Commonly planted species include Common Milkweed (A. syriaca), Marsh Milkweed (A. incarnata -pictured here), and Butterfly Milkweed (A. tuberosa).  Asclepia tuberosa (pictured at top of page) should only be transplanted in its first year and should always be planted in dry areas.