Flowering Quince
Chaenomeles speciosa
Rosaceae · broadleaf deciduous shrub · introduced
Last updated
Quick Facts
Height
6–10 ft
Spread
6-10 ft
Growth Rate
Medium
Light
Part Shade
Soil
Well Drained, Adaptable
Water
Low to moderate
Hardiness
Zones 4a–8b
Bloom Time
March to April
Origin
China
Phenological Calendar
As of May 24, 2026, Puget Sound stations range from 2172.5 to 2394 GDD₃₂. Flowering Quince has passed 'full bloom' (870 GDD₃₂).
Regional Season Tracker
GDD₃₂ accumulation across 7 Puget Sound stations · as of May 24, 2026| Station | GDD₃₂ | Current Stage | Next | To Go |
|---|---|---|---|---|
| Issaquah / East King | 2,394 | 'Full bloom' | — | — |
| Kent / Auburn | 2,373 | 'Full bloom' | — | — |
| Seattle / UW | 2,332 | 'Full bloom' | — | — |
| Olympia / Tumwater | 2,295 | 'Full bloom' | — | — |
| Tacoma / Puyallup | 2,259 | 'Full bloom' | — | — |
| Bellingham / Whatcom | 2,256 | 'Full bloom' | — | — |
| Sequim / Rain Shadow | 2,173 | 'Full bloom' | — | — |
View full calendar (2 stages)
| Stage | GDD32 | Typical Window |
|---|---|---|
| 'First bloom' BBCH '61' | 703 | '' |
| ● 'Full bloom' BBCH '65' NOW | 870 | '' |
Range: 462–645 GDD₃₂
(6yr)
Source: 'Master catalog (OSU, UMD), converted GDD50->GDD32 via Kent bloom-date mapping' About GDD₃₂ →
Season tracker for Kent / Auburn as of May 24, 2026. Predicted dates use 16-day weather forecast through Jun 9, 2026, then climate normals.
Data Maturity Baseline Extension data. Expert review underway.