naturalizedApocynaceae
Calotropis procera
giant milkweed
Naturalized (non-native)non-native
Introduced and now reproducing on its own in the wild.
Calotropis procera is a species of flowering plant in the family Apocynaceae that is native to North Africa, Tropical Africa, Western Asia, South Asia, and Indochina. The green globes are hollow but the flesh contains a toxic milky sap that is extremely bitter and turns into a gluey coating resistant to soap.
Read more on Wikipedia →summary via Wikipedia · CC BY-SA
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.
Gallery · 7 · iNaturalist
open-licensed photos · click any to view its source
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