Japanese Black Pine
Pinus thunbergii
Pinaceae · conifer · introduced
Japanese black pine is the rugged, wind-sculpted pine of the Japanese coast, the species that defines the aesthetic of Japanese garden design, bonsai, and the dramatic, windswept coastal landscapes of Honshu. In the landscape, it grows twenty to forty feet with a broad, irregular crown and stiff, dark green needles held in pairs. The silvery-white candle buds in spring are a distinctive identification feature. Native to the coastal areas of Japan and Korea, it is adapted to salt spray, wind, sandy soil, and the lean, exposed conditions of maritime environments.
In Western Washington, Japanese black pine performs well in full sun with well-drained, sandy or gravelly soil. It tolerates salt spray and coastal wind, making it one of the best pines for waterfront and exposed coastal properties. The irregular form can be enhanced by selective pruning, a trained specimen shaped over decades is a work of living art. Several diseases are tracked, including pine wilt nematode, which has devastated populations in parts of the eastern United States and is a concern if it reaches the Pacific Northwest. For a characterful, salt-tolerant pine with deep roots in Japanese garden tradition, Japanese black pine brings an unmistakable aesthetic to coastal and Asian-influenced landscapes.
Quick Facts
Phenological Calendar
| Stage | Typical Window |
|---|---|
| New growth flush BBCH 11 | Feb 15-Mar 15 |
| Bloom start BBCH 61 | Mar 15-May 15 |
| Bloom end / petal fall BBCH 69 | Apr 15-May 31 |
| Fruit/seed development BBCH 71 | Mar 15-May 31 |
| Fruit/seed maturity BBCH 85 | Jun 1-Aug 31 |