Asclepiadaceae (Milkweed family)

Broadleaf plant family

All members of this plant family are known as milkweeds. There are at least 15 species of milkweeds that occur in the state.

Cocklebur, commonCocklebur, common
Xanthium strumarium

Taraxacum officinale

Dock, prairieDock, prairie
Silphium terebinthinaceum

Eclipta prostrata

Galinsoga, hairy Galinsoga, hairy
Galinsoga ciliata

Goldenrod, CanadaGoldenrod, Canada
Solidago canadensis

Goldenrod, tallGoldenrod, tall
Solidago altissima

Groundsel, common Groundsel, common
Senecio vulgaris

Horseweed Horseweed
Conyza canadensis

Ironweed, tall Ironweed, tall
Vernonia altissima

Ironweed, westernIronweed, western
Vernonia baldwinii

Lettuce, pricklyLettuce, prickly
Lactuca serriola

Lettuce, tall Lettuce, tall
Lactuca canadensis

Milkweed, commonMilkweed, common
Asclepias syriaca

Milkweed, eastern whorledMilkweed, eastern whorled
Asclepias verticillata

Milkweed, greenMilkweed, green
Asclepias hirtella

Milkweed, honeyvine Milkweed, honeyvine
Ampelamus albidus

Ragweed, commonRagweed, common
Ambrosia artemisiifolia

Ragweed, giantRagweed, giant
Ambrosia trifida

Ragweed, lanceleafRagweed, lanceleaf
Ambrosia bidentata

Rosinweed, cupRosinweed, cup
Silphium perfoliatum

Rosinweed, wholeleafRosinweed, wholeleaf
Silphium integrifolium

Salsify, westernSalsify, western
Tragopogon dubius

Snakeroot, whiteSnakeroot, white
Eupatorium rugosum

Sowthistle, annual Sowthistle, annual
Sonchus oleraceus

Sowthistle, spinySowthistle, spiny
Sonchus asper

Bidens bipinnata

Sunflower, common Sunflower, common
Helianthus annuus

Thistle, bullThistle, bull
Cirsium vulgare

Thistle, Canada Thistle, Canada
Cirsium arvense

Thistle, field Thistle, field
Cirsium discolor

Thistle, muskThistle, musk
Carduus nutans

Thistle, Scotch Thistle, Scotch
Onopordum acanthium

Thistle, tallThistle, tall
Cirsium altissimum

For an idea of relative seed size, each photo contains a millimeter ruler. The distance between increments is 1 mm.

Publication No. IPM1023-9