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Japanese Zelkova Saw-leaf Zelkova

Zelkova serrata

Ulmaceae · broadleaf deciduous tree · introduced

Last updated

Data Coverage 4 of 6 dimensions
Site Data
Threats
Cultivars
Phenology
GDD Thresholds
Puget Sound

Japanese zelkova (saw-leaf zelkova) is a deciduous broadleaf from Japan reaching 35 ft with erect, single-crown form and slow growth. It has dark green, fine-textured foliage with multi-colored fall foliage (bronze, orange, purple, red, yellow). Small green inconspicuous flowers and smooth gray bark.

Japanese zelkova is hardy in zones 5a-8b and thrives in full sun with adaptable soil (pH 6.0-6.9) and moderate moisture. Growth is slow with low maintenance and long lifespan. It is used for shade and street tree applications and tolerates urban conditions with no drought tolerance.

Quick Facts

Height
35 ft
Spread
32 ft
Growth Rate
Slow
Light
Full Sun
Soil
Adaptable
Water
Moderate
Hardiness
Zone Zones 5a–8b
Bloom Time
March to April
Fall Color
Bronze, orange, purple, red, yellow
Origin
Japan Corvallis: Central Park, on Madison Ave near 6th St

Phenological Calendar

Stage Typical Window
Bud break BBCH 07 Feb 15-Mar 15
Leaf emergence BBCH 11 Mar 1-Apr 1
Bloom start BBCH 61 Apr 1-Apr 30
Bloom end / petal fall BBCH 69 Apr 15-May 15
Fruit/seed development BBCH 71 Jun 1-Aug 31
Fruit/seed maturity BBCH 85 Sep 1-Nov 30
Fall color / leaf senescence BBCH 93 Oct 1-Nov 15
Dormancy BBCH 97 Nov 15-Feb 28

Diseases (2)

Cultivars (1)

'Variegata'
Common name: Variegated Japanese Zelkova
Hardy to USDA Zone 5