MilkweedUSA

Milkweed species of the United States

70 species of Asclepias plus 2 naturalised relatives, each with photographs and a diagnostic plate. Filter by state, soil, light, height or flower color.

72 species

Antelope Horns (Asclepias asperula) in flower
Antelope Horns
Asclepias asperula
Native · 1 ft–2 ft · dry soil · 9 states
Aquatic Milkweed (Asclepias perennis) in flower
Aquatic Milkweed
Asclepias perennis
Native · 1 ft–3 ft · wet soil · 17 states
Balloon Plant (Gomphocarpus physocarpus) in flower
Balloon Plant
Gomphocarpus physocarpus
Introduced · 3 ft–6 ft · average soil · 9 states
Bract Milkweed (Asclepias brachystephana) in flower
Bract Milkweed
Asclepias brachystephana
Native · 6 in–1.5 ft · dry soil · 3 states
Broadleaf Milkweed (Asclepias latifolia) in flower
Broadleaf Milkweed
Asclepias latifolia
Native · 1 ft–3 ft · dry soil · 10 states
Butterfly Weed (Asclepias tuberosa) in flower
Butterfly Weed
Asclepias tuberosa
Native · 1 ft–3 ft · dry to average soil · 43 states
California Milkweed (Asclepias californica) in flower
California Milkweed
Asclepias californica
Native · 1 ft–3 ft · dry soil · 1 states
Carolina Milkweed (Asclepias cinerea) in flower
Carolina Milkweed
Asclepias cinerea
Native · 1 ft–2.5 ft · dry soil · 6 states
Clasping Milkweed (Asclepias amplexicaulis) in flower
Clasping Milkweed
Asclepias amplexicaulis
Native · 1.5 ft–3 ft · dry soil · 34 states
Common Milkweed (Asclepias syriaca) in flower
Common Milkweed
Asclepias syriaca
Native · 3 ft–6 ft · dry to average soil · 40 states
Curtiss’ Milkweed (Asclepias curtissii) in flower
Curtiss’ Milkweed
Asclepias curtissii
Native rare · 1 ft–3 ft · dry soil · 1 states
Desert Milkweed (Asclepias erosa) in flower
Desert Milkweed
Asclepias erosa
Native · 2 ft–5 ft · dry soil · 4 states
Dwarf Milkweed (Asclepias involucrata) in flower
Dwarf Milkweed
Asclepias involucrata
Native · 4 in–10 in · dry soil · 8 states
Eastwood’s Milkweed (Asclepias eastwoodiana) in flower
Eastwood’s Milkweed
Asclepias eastwoodiana
Native rare · 6 in–1.2 ft · dry soil · 1 states
Emory’s Milkweed (Asclepias emoryi) in flower
Emory’s Milkweed
Asclepias emoryi
Native · 4 in–1.2 ft · dry soil · 2 states
Engelmann’s Milkweed (Asclepias engelmanniana) in flower
Engelmann’s Milkweed
Asclepias engelmanniana
Native · 2 ft–5 ft · dry soil · 8 states
Feay’s Milkweed (Asclepias feayi) in flower
Feay’s Milkweed
Asclepias feayi
Native · 8 in–2 ft · dry soil · 1 states
Fewflower Milkweed (Asclepias lanceolata) in flower
Fewflower Milkweed
Asclepias lanceolata
Native · 2 ft–5 ft · wet soil · 12 states
Fourleaf Milkweed (Asclepias quadrifolia) in flower
Fourleaf Milkweed
Asclepias quadrifolia
Native · 1 ft–2 ft · dry to average soil · 27 states
Giant Milkweed (Calotropis procera) in flower
Giant Milkweed
Calotropis procera
Introduced · 6 ft–12 ft · dry soil · 5 states
Green Antelopehorn (Asclepias viridis) in flower
Green Antelopehorn
Asclepias viridis
Native · 1 ft–2.5 ft · dry to average soil · 18 states
Green Comet Milkweed (Asclepias viridiflora) in flower
Green Comet Milkweed
Asclepias viridiflora
Native · 1 ft–3 ft · dry soil · 38 states
Hall’s Milkweed (Asclepias hallii) in flower
Hall’s Milkweed
Asclepias hallii
Native · 1.5 ft–3 ft · dry soil · 6 states
Heartleaf Milkweed (Asclepias cordifolia) in flower
Heartleaf Milkweed
Asclepias cordifolia
Native · 1 ft–3 ft · dry soil · 3 states
Largeflower Milkweed (Asclepias connivens) in flower
Largeflower Milkweed
Asclepias connivens
Native · 1 ft–2.5 ft · wet to average soil · 5 states
Lemmon’s Milkweed (Asclepias lemmonii) in flower
Lemmon’s Milkweed
Asclepias lemmonii
Native · 8 in–2 ft · dry to average soil · 2 states
Longhood Milkweed (Asclepias macrotis) in flower
Longhood Milkweed
Asclepias macrotis
Native · 8 in–1.7 ft · dry soil · 4 states
Longleaf Milkweed (Asclepias longifolia) in flower
Longleaf Milkweed
Asclepias longifolia
Native · 1 ft–2.5 ft · wet to average soil · 13 states
Mahogany Milkweed (Asclepias hypoleuca) in flower
Mahogany Milkweed
Asclepias hypoleuca
Native · 1 ft–2.5 ft · dry soil · 2 states
Mead’s Milkweed (Asclepias meadii) in flower
Mead’s Milkweed
Asclepias meadii
Native rare · 1 ft–2 ft · average to dry soil · 4 states
Michaux’s Milkweed (Asclepias michauxii) in flower
Michaux’s Milkweed
Asclepias michauxii
Native · 8 in–1.7 ft · dry to average soil · 5 states
Mojave Milkweed (Asclepias nyctaginifolia) in flower
Mojave Milkweed
Asclepias nyctaginifolia
Native · 6 in–1.5 ft · dry soil · 4 states
Narrowleaf Milkweed (Asclepias fascicularis) in flower
Narrowleaf Milkweed
Asclepias fascicularis
Native · 2 ft–4 ft · dry to average soil · 7 states
Nodding Milkweed (Asclepias glaucescens) in flower
Nodding Milkweed
Asclepias glaucescens
Native · 1 ft–3 ft · dry to average soil · 2 states
Oval-leaf Milkweed (Asclepias ovalifolia) in flower
Oval-leaf Milkweed
Asclepias ovalifolia
Native · 8 in–1.7 ft · dry to average soil · 9 states
Pallid Milkweed (Asclepias cryptoceras) in flower
Pallid Milkweed
Asclepias cryptoceras
Native · 4 in–1 ft · dry soil · 10 states
Pineland Milkweed (Asclepias obovata) in flower
Pineland Milkweed
Asclepias obovata
Native · 1 ft–2.5 ft · dry soil · 7 states
Pineneedle Milkweed (Asclepias linaria) in flower
Pineneedle Milkweed
Asclepias linaria
Native · 1.5 ft–4 ft · dry soil · 3 states
Pinewoods Milkweed (Asclepias humistrata) in flower
Pinewoods Milkweed
Asclepias humistrata
Native · 8 in–2 ft · dry soil · 7 states
Plains Milkweed (Asclepias pumila) in flower
Plains Milkweed
Asclepias pumila
Native · 4 in–1 ft · dry soil · 10 states
Poison Milkweed (Asclepias subverticillata) in flower
Poison Milkweed
Asclepias subverticillata
Native · 1 ft–3 ft · dry soil · 10 states
Poke Milkweed (Asclepias exaltata) in flower
Poke Milkweed
Asclepias exaltata
Native · 3 ft–6 ft · average soil · 27 states
Prairie Milkweed (Asclepias sullivantii) in flower
Prairie Milkweed
Asclepias sullivantii
Native · 2 ft–4 ft · average to wet soil · 14 states
Prostrate Milkweed (Asclepias prostrata) in flower
Prostrate Milkweed
Asclepias prostrata
Native rare · 2 in–6 in · dry soil · 1 states
Purple Milkweed (Asclepias purpurascens) in flower
Purple Milkweed
Asclepias purpurascens
Native · 2 ft–4 ft · average to dry soil · 35 states
Red Milkweed (Asclepias rubra) in flower
Red Milkweed
Asclepias rubra
Native · 2 ft–4 ft · wet soil · 18 states
Rusby’s Milkweed (Asclepias rusbyi) in flower
Rusby’s Milkweed
Asclepias rusbyi
Native · 1 ft–2.5 ft · dry soil · 2 states
Rush Milkweed (Asclepias subulata) in flower
Rush Milkweed
Asclepias subulata
Native · 2 ft–6 ft · dry soil · 4 states
Ruth’s Milkweed (Asclepias ruthiae) in flower
Ruth’s Milkweed
Asclepias ruthiae
Native · 4 in–1 ft · dry soil · 3 states
Sand Milkweed (Asclepias arenaria) in flower
Sand Milkweed
Asclepias arenaria
Native · 1 ft–2.5 ft · dry soil · 8 states
Savannah Milkweed (Asclepias pedicellata) in flower
Savannah Milkweed
Asclepias pedicellata
Native · 6 in–1.5 ft · wet to average soil · 2 states
Serpentine Milkweed (Asclepias solanoana) in flower
Serpentine Milkweed
Asclepias solanoana
Native rare · 4 in–10 in · dry soil · 1 states
Showy Milkweed (Asclepias speciosa) in flower
Showy Milkweed
Asclepias speciosa
Native · 2 ft–5 ft · average to dry soil · 21 states
Slimleaf Milkweed (Asclepias stenophylla) in flower
Slimleaf Milkweed
Asclepias stenophylla
Native · 1.5 ft–3.3 ft · dry soil · 13 states
Slimpod Milkweed (Asclepias quinquedentata) in flower
Slimpod Milkweed
Asclepias quinquedentata
Native · 1 ft–2.5 ft · dry soil · 2 states
Southern Milkweed (Asclepias viridula) in flower
Southern Milkweed
Asclepias viridula
Native rare · 1 ft–2.5 ft · wet soil · 2 states
Sperry’s Milkweed (Asclepias sperryi) in flower
Sperry’s Milkweed
Asclepias sperryi
Native rare · 8 in–1.7 ft · dry soil · 1 states
Swamp Milkweed (Asclepias incarnata) in flower
Swamp Milkweed
Asclepias incarnata
Native · 3 ft–5 ft · wet to average soil · 43 states
Tall Green Milkweed (Asclepias hirtella) in flower
Tall Green Milkweed
Asclepias hirtella
Native · 2 ft–4 ft · dry to average soil · 18 states
Texas Milkweed (Asclepias texana) in flower
Texas Milkweed
Asclepias texana
Native · 1 ft–3 ft · dry to average soil · 2 states
Tropical Milkweed (Asclepias curassavica) in flower
Tropical Milkweed
Asclepias curassavica
Introduced · 2 ft–4 ft · average soil · 11 states
Tufted Milkweed (Asclepias nummularia) in flower
Tufted Milkweed
Asclepias nummularia
Native · 2 in–8 in · dry soil · 1 states
Velvetleaf Milkweed (Asclepias tomentosa) in flower
Velvetleaf Milkweed
Asclepias tomentosa
Native · 1 ft–2.5 ft · dry soil · 4 states
Welsh’s Milkweed (Asclepias welshii) in flower
Welsh’s Milkweed
Asclepias welshii
Native rare · 1.5 ft–4 ft · dry soil · 2 states
Wheel Milkweed (Asclepias uncialis) in flower
Wheel Milkweed
Asclepias uncialis
Native rare · 2 in–6 in · dry soil · 7 states
White Milkweed (Asclepias variegata) in flower
White Milkweed
Asclepias variegata
Native · 1.5 ft–3.5 ft · dry to average soil · 25 states
Whitestem Milkweed (Asclepias albicans) in flower
Whitestem Milkweed
Asclepias albicans
Native · 3 ft–10 ft · dry soil · 3 states
Whorled Milkweed (Asclepias verticillata) in flower
Whorled Milkweed
Asclepias verticillata
Native · 1 ft–2.5 ft · dry to average soil · 42 states
Woolly Milkweed (Asclepias lanuginosa) in flower
Woolly Milkweed
Asclepias lanuginosa
Native rare · 4 in–1 ft · dry soil · 10 states
Woolly Milkweed (Asclepias vestita) in flower
Woolly Milkweed
Asclepias vestita
Native · 1 ft–3 ft · dry soil · 2 states
Woollypod Milkweed (Asclepias eriocarpa) in flower
Woollypod Milkweed
Asclepias eriocarpa
Native · 2 ft–4 ft · dry soil · 2 states
Zizotes Milkweed (Asclepias oenotheroides) in flower
Zizotes Milkweed
Asclepias oenotheroides
Native · 8 in–2 ft · dry to average soil · 5 states

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