naturalizedApocynaceae
Calotropis procera
giant milkweed
Naturalized (non-native)non-native
Introduced and now reproducing on its own in the wild.
No written account yet for this species.
Seasonality
37 flowering · 10 fruiting annotations · iNaturalist · fetched Jul 2026
■ flowering (peak October)■ fruiting (peak October)
This is an inference, not a schedule. The curve reflects when observers annotated flowering and fruiting — which tracks observer effort as well as plant behavior, and pools all elevations and islands into one signal. Hawaiʻi’s microclimates vary enormously; a species may fruit in January at sea level and June at elevation. Use this to know when to look, then look.
Where documented · 58 ahupuaʻa
documented occurrences · iNaturalist + GBIF · iNaturalist 194 · GBIF 250 records
Waimea · KauaʻiiNat 34 · GBIF 59 ✓
Wailuku · MauiiNat 13 · GBIF 19 ✓
Kūkiʻo, Maniniʻōwali · HawaiʻiiNat 12 · GBIF 18 ✓
ʻAnaehoʻomalu · HawaiʻiiNat 13 · GBIF 13 ✓
Waikapū · MauiiNat 11 · GBIF 12 ✓
Lālāmilo, Keanuʻiʻomanō · HawaiʻiiNat 10 · GBIF 11 ✓
Mohopilo · MauiiNat 8 · GBIF 8 ✓
Waimea, Waikoloa · HawaiʻiiNat 5 · GBIF 10 ✓
Pūlehunui · MauiiNat 7 · GBIF 8 ✓
Honouliuli · OʻahuiNat 7 · GBIF 7 ✓
Waiakalua · KauaʻiiNat 7 · GBIF 7 ✓
Waikīkī · OʻahuiNat 4 · GBIF 6 ✓
Waiohuli · MauiiNat 3 · GBIF 7 ✓
Kamaʻole · MauiiNat 3 · GBIF 6 ✓
Kanahena · MauiiNat 2 · GBIF 6 ✓
Puʻuwaʻawaʻa · HawaiʻiiNat 3 · GBIF 4 ✓
Waimea · NiʻihauiNat 4 · GBIF 3 ✓
Hāmākuapoko · MauiiNat 3 · GBIF 3 ✓
Ukumehame · MauiiNat 1 · GBIF 4 ✓
Kealakehe · HawaiʻiiNat 2 · GBIF 2 ✓
Maunalei · LānaʻiiNat 2 · GBIF 2 ✓
Maunalua · OʻahuiNat 3 · GBIF 1 ✓
Paeahu · MauiiNat 3 · GBIF 1 ✓
Kualapa · MauiiNat 1 · GBIF 3 ✓
Waipiʻo · OʻahuiNat 2 · GBIF 2 ✓
Kaʻonoʻulu · MauiiNat 1 · GBIF 2 ✓
Kalaoa 1-5 · HawaiʻiiNat 2 · GBIF 1 ✓
Papaʻanui · MauiiNat 2 · GBIF 1 ✓
Kēōkea · MauiiNat 1 · GBIF 2 ✓
Moaliʻi · MauiiNat 2 · GBIF 1 ✓
Kawaihae 1 · HawaiʻiiNat 1 · GBIF 2 ✓
Kaʻūpūlehu · HawaiʻiiNat 2 · GBIF 1 ✓
Puʻuanahulu · HawaiʻiiNat 2 · GBIF 1 ✓
ʻOʻoma 1 · HawaiʻiiNat 2
Makalawena · HawaiʻiiNat 1 · GBIF 1 ✓
Awakeʻe · HawaiʻiiNat 1 · GBIF 1 ✓
Kaʻamola · MolokaʻiiNat 1 · GBIF 1 ✓
Kanaio · MauiiNat 1 · GBIF 1 ✓
Kaʻā · LānaʻiiNat 1 · GBIF 1 ✓
Launiupoko · MauiiNat 1 · GBIF 1 ✓
ʻEleʻele · KauaʻiiNat 1 · GBIF 1 ✓
Puaʻa 2-3, Waiʻaha 1 · HawaiʻiiNat 1 · GBIF 1 ✓
Waiakoa · MauiGBIF 2
Kalapakī · KauaʻiiNat 1
Paunau · MauiiNat 1
ʻŌmaʻopio · MauiiNat 1
Waimānalo · OʻahuiNat 1
Waiʻanae · OʻahuiNat 1
Kaunakakai · MolokaʻiiNat 1
N/A · KahoʻolaweiNat 1
ʻŌuli · HawaiʻiiNat 1
Makaweli · KauaʻiGBIF 1
Kōloa · KauaʻiGBIF 1
Kohanaiki · HawaiʻiGBIF 1
Waimea · NiʻihauGBIF 1
Kāneʻohe · OʻahuGBIF 1
Kaohai · LānaʻiGBIF 1
Keahuolū · HawaiʻiGBIF 1