Carolina Allspice
Calycanthus floridus
Calycanthaceae · broadleaf deciduous shrub · native
Last updated
Data Coverage 3 of 6 dimensions
Quick Facts
Height
6–9 ft
Spread
6 ft
Growth Rate
Medium
Light
Full Sun to Shade
Soil
Moist
Water
Moderate
Hardiness
Zone Zones 5a–8b
Bloom Time
April to July
Origin
from Virginia to Florida
Phenological Calendar
As of April 19, 2026, Puget Sound stations range from 1342.9 to 1500.8 GDD₃₂. Carolina Allspice has passed 'first bloom' (1270 GDD₃₂).
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' | — | — |
| Seattle / UW | 1,465 | 'First bloom' | — | — |
| Kent / Auburn | 1,441 | 'First bloom' | — | — |
| Olympia / Tumwater | 1,415 | 'First bloom' | — | — |
| Bellingham / Whatcom | 1,390 | 'First bloom' | — | — |
| Tacoma / Puyallup | 1,381 | 'First bloom' | — | — |
| Sequim / Rain Shadow | 1,343 | 'First bloom' | — | — |
| Stage | GDD32 | Typical Window |
|---|---|---|
| ● 'First bloom' BBCH '61' NOW | 1270 | '' |
Range: 937–1136 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.