Kauaʻi record · kba_plant_sequoia_sempervirens

Coast redwood

Sequoia sempervirens

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About Coast redwood

Coast redwood (Sequoia sempervirens) is an introduced tree documented on Kauaʻi through historical forestry planting records. The reviewed records do not establish present survival. Native to the humid maritime belt of coastal northern and central California and extreme southwestern Oregon, where mild temperatures, winter rain, and summer fog are characteristic. Kauaʻi evidence concerns intentional forestry planting outside that native range; it does not establish naturalization or invasiveness.

Kauaʻi evidence

Taxonomic identity, tree form, diagnostic morphology and island occurrence use the linked reviewed sources. Historical planting, cultivation, naturalization and invasive status are separate. Generated imagery is not occurrence evidence. The 1918–1959 Kauaʻi reforestation working register records 3,523 plants under Sequoia sempervirens across 8 entries dated 1927–1956. These are recorded planting quantities, not counts of surviving trees, and they do not by themselves establish current persistence, naturalization, or ecological impact. Source: Kauaʻi Reforestation Plantings 1918–1959 working register (user-supplied; reconciled 6 October 2026).

Names and classification

Scientific name: Sequoia sempervirens
Common names: Coast redwood · California redwood · redwood · coastal redwood
Other names: Sequoia sempervirens · coast redwood · California redwood · redwood · coastal redwood · Taxodium sempervirens D.Don
Record type: Species

Kauaʻi occurrence and status

Kauaʻi occurrence: Recorded on Kauaʻi
Origin: Introduced
Conservation status: Not yet assessed
Evidence date: 2026-10-05
Evidence limits: The 2016 DLNR representative species list supports documented planting history later than the 1910–1960 ledger, but this plate project did not independently verify a living individual in 2026.

Habitat and ecology

Habitats: Not yet assessed
Food and resource needs: Not yet assessed
Reproduction: Not yet assessed
Shelter: Not yet assessed
Growth form: Evergreen conifer tree

Threats and conservation

Monitoring: Not yet assessed
Data gaps: Current population extent and trajectory · Additional species-specific ecological and conservation sources

Process and seasonal context

Seasonal timing: Not yet assessed
Seasonal description: Coast redwood (Sequoia sempervirens) is an introduced tree documented on Kauaʻi through historical forestry planting records. The reviewed records do not establish present survival. Native to the humid maritime belt of coastal northern and central California and extreme southwestern Oregon, where mild temperatures, winter rain, and summer fog are characteristic. Kauaʻi evidence concerns intentional forestry planting outside that native range; it does not establish naturalization or invasiveness.

Sources and further reading

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