Firethorn
'First bloom'Pyracantha coccinea
Rosaceae · broadleaf evergreen shrub · introduced
Last updated
Quick Facts
Height
10 ft
Spread
13 ft
Growth Rate
Moderate
Light
Full Sun
Soil
Well Drained
Water
Low
Hardiness
Zone Zones 8b–9b
Bloom Time
May
Origin
Southern Europe, Western Asia
Watch for this season
Cherry bark tortrixModerate
Spring Feeding & Pupation
Root weevilModerate
Adult Emergence & Foliar Feeding
Phenological Calendar
As of May 13, 2026, Puget Sound stations range from 1906.2 to 2098.2 GDD₃₂. Firethorn has passed 'first bloom' (1490 GDD₃₂).
Regional Season Tracker
GDD₃₂ accumulation across 7 Puget Sound stations · as of May 13, 2026| Station | GDD₃₂ | Current Stage | Next | To Go |
|---|---|---|---|---|
| Issaquah / East King | 2,098 | 'First bloom' | — | — |
| Kent / Auburn | 2,089 | 'First bloom' | — | — |
| Seattle / UW | 2,063 | 'First bloom' | — | — |
| Olympia / Tumwater | 2,025 | 'First bloom' | — | — |
| Tacoma / Puyallup | 1,993 | 'First bloom' | — | — |
| Bellingham / Whatcom | 1,972 | 'First bloom' | — | — |
| Sequim / Rain Shadow | 1,906 | 'First bloom' | — | — |
| Stage | GDD32 | Typical Window |
|---|---|---|
| ● 'First bloom' BBCH '61' NOW | 1490 | '' |
Range: 1103–1372 GDD₃₂
(6yr)
Source: 'Master catalog (OSU), converted GDD50->GDD32 via Kent bloom-date mapping' About GDD₃₂ →
Season tracker for Kent / Auburn as of May 13, 2026. Predicted dates use 16-day weather forecast through May 29, 2026, then climate normals.
Diseases: Regionally Documented (1)
Pests: Regionally Documented (2)
Data Maturity Structured Multiple sources. Expert review underway.