Beautybush
Kolkwitzia amabilis
Caprifoliaceae · broadleaf deciduous shrub · introduced
Last updated
Data Coverage 3 of 6 dimensions
Quick Facts
Height
6–10 ft
Light
Full Sun to Part Shade
Hardiness
Zone Zones 4a–8b
Bloom Time
April to May
Origin
central China
Phenological Calendar
As of April 19, 2026, Puget Sound stations range from 1342.9 to 1500.8 GDD₃₂. Beautybush has reached 'first bloom' (1370 GDD₃₂) and is approaching 'full bloom', predicted around Apr 29.
Regional Season Tracker
GDD₃₂ accumulation across 7 Puget Sound stations · as of Apr 19, 2026| Station | GDD₃₂ | Current Stage | Next | To Go |
|---|---|---|---|---|
| Issaquah / East King | 1,501 | 'First bloom' | 'Full bloom' | 196 |
| Seattle / UW | 1,465 | 'First bloom' | 'Full bloom' | 232 |
| Kent / Auburn | 1,441 | 'First bloom' | 'Full bloom' | 256 |
| Olympia / Tumwater | 1,415 | 'First bloom' | 'Full bloom' | 282 |
| Bellingham / Whatcom | 1,390 | 'First bloom' | 'Full bloom' | 307 |
| Tacoma / Puyallup | 1,381 | 'First bloom' | 'Full bloom' | 317 |
| Sequim / Rain Shadow | 1,343 | Pre-season | 'First bloom' | 27 |
| Stage | GDD32 | Typical Window |
|---|---|---|
| ● 'First bloom' BBCH '61' NOW | 1370 | '' |
| ○ 'Full bloom' BBCH '65' NEXT | 1697 | '' est. Apr 29 (forecast) |
Range: 1004–1233 GDD₃₂
(6yr)
GDD = Growing Degree Days (base 32°F, Jan 1 start). Why base 32? Hover over GDD values for source details. Season tracker for Kent / Auburn as of Apr 19, 2026. Predicted dates use 16-day weather forecast through May 5, 2026, then climate normals.