Carolina Allspice
Calycanthus floridus
Calycanthaceae · broadleaf deciduous shrub · introduced
Last updated
Quick Facts
Height
6–9 ft
Spread
6 ft
Growth Rate
Medium
Light
Full Sun to Shade
Soil
Moist
Water
Moderate
Hardiness
Zones 5a–8b
Bloom Time
April to July
Fall Color
Yellow, insignificant
Origin
from Virginia to Florida
Phenological Calendar
As of May 24, 2026, Puget Sound stations range from 2172.5 to 2394 GDD₃₂. Carolina Allspice has passed 'first bloom' (1270 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 | 'First bloom' | — | — |
| Kent / Auburn | 2,373 | 'First bloom' | — | — |
| Seattle / UW | 2,332 | 'First bloom' | — | — |
| Olympia / Tumwater | 2,295 | 'First bloom' | — | — |
| Tacoma / Puyallup | 2,259 | 'First bloom' | — | — |
| Bellingham / Whatcom | 2,256 | 'First bloom' | — | — |
| Sequim / Rain Shadow | 2,173 | 'First bloom' | — | — |
View full calendar (1 stages)
| Stage | GDD32 | Typical Window |
|---|---|---|
| ● 'First bloom' BBCH '61' NOW | 1270 | '' |
Range: 937–1136 GDD₃₂
(6yr)
Source: 'Master catalog (OSU), 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.