endemicFabaceae

Acacia koa

koa · koa

Endemic to Hawaiʻinative

Found naturally nowhere else on Earth.

Endemic hardwood of mid-to-high elevation Hawaiian forests. Economically and culturally significant. Restoration plantings are widespread; natural regeneration limited by ungulates and grasses.

Acacia koa is a species of flowering tree in the pea family, Fabaceae. It is endemic to the Hawaiian Islands, where it is the second most common tree. The highest populations are on Hawaiʻi, Maui and Oʻahu. Its name in the Hawaiian language, koa, also means brave, bold, fearless, or warrior.

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Seasonality
110 flowering · 33 fruiting annotations · iNaturalist · fetched Jul 2026
JFMAMJJASONDpeak
■ flowering (peak January)■ fruiting (peak July)

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 · 4 · iNaturalist
open-licensed photos · click any to view its source
Where documented · 54 ahupuaʻa
documented occurrences · iNaturalist + GBIF · iNaturalist 200 · GBIF 295 records
Keauhou · HawaiʻiiNat 23 · GBIF 75 ✓
Waimea · KauaʻiiNat 28 · GBIF 29 ✓
Humuʻula · HawaiʻiiNat 14 · GBIF 31 ✓
Waikīkī · OʻahuiNat 14 · GBIF 29 ✓
Pāpaʻikou · HawaiʻiiNat 18 · GBIF 12 ✓
Honolulu · OʻahuiNat 8 · GBIF 19 ✓
Hālawa · OʻahuiNat 15 · GBIF 11 ✓
Waiākea · HawaiʻiiNat 8 · GBIF 13 ✓
Kaloko · HawaiʻiiNat 9 · GBIF 8 ✓
Honuaʻula · HawaiʻiiNat 9 · GBIF 5 ✓
Kapāpala · HawaiʻiiNat 5 · GBIF 5 ✓
ʻAiea · OʻahuiNat 5 · GBIF 5 ✓
Kalauao · OʻahuiNat 3 · GBIF 4 ✓
Keōpukaloa · MolokaʻiiNat 4 · GBIF 2 ✓
Kaʻohe Mauka · HawaiʻiiNat 2 · GBIF 3 ✓
Kalulu · LānaʻiiNat 2 · GBIF 3 ✓
Kawaihae 2 · HawaiʻiiNat 2 · GBIF 2 ✓
Hāʻena · KauaʻiiNat 3 · GBIF 1 ✓
Pūlehunui · MauiiNat 1 · GBIF 3 ✓
Paumalū · OʻahuiNat 1 · GBIF 3 ✓
Kahuku · HawaiʻiiNat 1 · GBIF 2 ✓
Honokōhau 1-3 · HawaiʻiiNat 1 · GBIF 1 ✓
Kaʻaʻawa · OʻahuiNat 1 · GBIF 1 ✓
Puʻuanahulu · HawaiʻiiNat 1 · GBIF 1 ✓
Moanalua · OʻahuiNat 1 · GBIF 1 ✓
Kamananui · OʻahuiNat 1 · GBIF 1 ✓
Haʻikū · MauiiNat 1 · GBIF 1 ✓
Paʻalaʻa · OʻahuiNat 1 · GBIF 1 ✓
Mānana · OʻahuiNat 1 · GBIF 1 ✓