naturalizedAsteraceae
Senecio madagascariensis
Madagascar Ragwort
Naturalized (non-native)non-native
Introduced and now reproducing on its own in the wild.
Senecio madagascariensis also known as Madagascar ragwort is a species of the genus Senecio and family Asteraceae. Other common names include Madagascar groundsel and fireweed. It has been included on the noxious weeds list for Hawaii and the reject list for Australia.
Read more on Wikipedia →summary via Wikipedia · CC BY-SA
Seasonality
32 flowering · 5 fruiting annotations · iNaturalist · fetched Jul 2026
■ flowering (peak December)■ fruiting (peak August)
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 · 10 · iNaturalist
open-licensed photos · click any to view its source
Where documented · 73 ahupuaʻa
documented occurrences · iNaturalist + GBIF · iNaturalist 200 · GBIF 299 records
Kaʻohe Mauka · HawaiʻiiNat 48 · GBIF 80 ✓
Humuʻula · HawaiʻiiNat 20 · GBIF 30 ✓
Kalialinui · MauiiNat 22 · GBIF 25 ✓
Papaʻanui · MauiiNat 13 · GBIF 13 ✓
Waiākea · HawaiʻiiNat 11 · GBIF 14 ✓
Keauhou · HawaiʻiiNat 13 · GBIF 11 ✓
Kahuku · HawaiʻiiNat 3 · GBIF 13 ✓
Pūlehunui · MauiiNat 7 · GBIF 6 ✓
Kahakuloa · MauiiNat 6 · GBIF 6 ✓
Puʻukawaiwai, Panoluʻukia · HawaiʻiiNat 2 · GBIF 7 ✓
Kaloko · HawaiʻiiNat 4 · GBIF 4 ✓
Makawao · MauiiNat 4 · GBIF 4 ✓
Kawaihae 2 · HawaiʻiiNat 3 · GBIF 4 ✓
Waiohuli · MauiiNat 3 · GBIF 4 ✓
Honuaʻula · HawaiʻiiNat 1 · GBIF 5 ✓
Ukumehame · MauiiNat 2 · GBIF 3 ✓
Waimea, Waikoloa · HawaiʻiiNat 1 · GBIF 4 ✓
Kalaoa 1-5 · HawaiʻiiNat 2 · GBIF 2 ✓
Honokahua · MauiiNat 2 · GBIF 2 ✓
Puʻuwaʻawaʻa · HawaiʻiiNat 2 · GBIF 2 ✓
Puʻukapu · HawaiʻiiNat 1 · GBIF 2 ✓
Nuʻu · MauiiNat 1 · GBIF 2 ✓
Mohopilo · MauiiNat 1 · GBIF 2 ✓
Lālāmilo, Keanuʻiʻomanō · HawaiʻiiNat 1 · GBIF 2 ✓
Keāliaaupuni · LānaʻiiNat 1 · GBIF 2 ✓
Kanahena · MauiiNat 3
N/A · KahoʻolaweiNat 2 · GBIF 1 ✓
Kamoku · LānaʻiiNat 1 · GBIF 2 ✓
Piʻihonua · HawaiʻiGBIF 3
Kiolakaʻa, Puʻumakaʻā · HawaiʻiiNat 1 · GBIF 1 ✓
Honolua · MauiiNat 1 · GBIF 1 ✓
Kamaʻole · MauiiNat 1 · GBIF 1 ✓
Kaipuhaʻa, Lamaloloa · HawaiʻiiNat 1 · GBIF 1 ✓
Waipiʻo · HawaiʻiiNat 1 · GBIF 1 ✓
West Makaīwa · MauiiNat 1 · GBIF 1 ✓
Kamehamenui · MauiiNat 1 · GBIF 1 ✓
Manukā · HawaiʻiiNat 1 · GBIF 1 ✓
Paeahu · MauiiNat 1 · GBIF 1 ✓
Peahi · MauiiNat 1 · GBIF 1 ✓
Waikapū · MauiiNat 1 · GBIF 1 ✓
Pololū · HawaiʻiiNat 1 · GBIF 1 ✓
Honokāne · HawaiʻiGBIF 2
Kuliʻouʻou · OʻahuGBIF 2
Kaunolū · LānaʻiGBIF 2
Kaʻūpūlehu · HawaiʻiGBIF 2
Kanaio · MauiGBIF 2
Kaʻā · LānaʻiGBIF 2
ʻAlae 1-2 · MauiGBIF 2
Pālāwai · LānaʻiGBIF 2
Waikele · OʻahuiNat 1
Kēōkea · MauiiNat 1
Mailepai · MauiiNat 1
Pāʻauhau-mauka · HawaiʻiiNat 1
Kalulu · LānaʻiiNat 1
Pāpaʻikou · HawaiʻiiNat 1
Puʻuanahulu · HawaiʻiiNat 1
Kaunakakai · MolokaʻiiNat 1
Kaʻonoʻulu · MauiGBIF 1
Hoʻokena · HawaiʻiGBIF 1
Punahoa 2 · HawaiʻiGBIF 1
Hāmākuapoko · MauiGBIF 1
ʻŌmaʻopio · MauiGBIF 1
Moʻoiki · HawaiʻiGBIF 1
Kapāpala · HawaiʻiGBIF 1
Waiakoa · MauiGBIF 1
Kaloʻi · MauiGBIF 1
Honomū, Kuhua · HawaiʻiGBIF 1
Kealahewa · HawaiʻiGBIF 1
Halehaku · MauiGBIF 1
Kaohai · LānaʻiGBIF 1
Pauahi · HawaiʻiGBIF 1