Japanese Zelkova Saw-leaf Zelkova
Zelkova serrata
Ulmaceae · broadleaf deciduous tree · introduced
Last updated
This profile synthesizes data from multiple published sources. Expert field review is in progress.
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
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 |