Elkhorn Cedar

Thujopsis dolabrata

Cupressaceae · coniferous tree · introduced

Last updated March 9, 2026

Data Coverage 3 of 6 dimensions

Site Data

Threats

Cultivars

Phenology

GDD Thresholds

Puget Sound

Quick Facts

Height

30–50 ft

Spread

32 ft

Growth Rate

Slow

Light

Full Sun

Soil

Moist

Water

Moderate

Hardiness

Zone Zones 5a–8b

Bloom Time

Non-flowering

Origin

the moist forests of central and southern Japan

Diseases (5)

Diaporthe vaccinii Twig Blight Phomopsis spp., Kabatina spp., and Pestalotiopsis spp. Shoot Tip Dieback Fungal agents (multiple) Leaf Blight Evergreen plants Cedar Flagging Hendersonia coniothyrium Berckmann's Blight

Pests (9)

Physokermes piceae Spruce bud scale Tetranychidae Spider mite Various (Agromyzidae, Gracillariidae, Tenthredinidae) Leafminer Juniper fall-webworm Carulaspis juniperi Juniper scale Various (Buprestidae, Scolytinae) Flat Headed And Shothole Borers Argyresthia cupressella Cypress tip moth Port Orford cedar root rot Seiridium Canker

Cultivars (2)

'Nana'

Common name: Dwarf Elkhorn Cedar; Mature height: 2 ft

Hardy to USDA Zone 6

'Variegata'

Common name: Variegated Hibi Arborvitae; Mature height: 6 ft

Hardy to USDA Zone 6