Shadblow
Amelanchier canadensis
Rosaceae · broadleaf deciduous shrub · native
Last updated
Quick Facts
Height
15 ft
Spread
9 ft
Growth Rate
Moderate
Light
Sun to Part Shade
Soil
Wet Tolerant
Water
Moderate
Hardiness
Zone Zones 3a–8b
Bloom Time
April to May
Fall Color
Gold, orange, red, yellow
Origin
from Maine to Georgia, Louisiana and west to Iowa and
Watch for this season
RustHigh
Aecial Stage (Alternate Host)
Phenological Calendar
As of May 13, 2026, Puget Sound stations range from 1906.2 to 2098.2 GDD₃₂. Shadblow has passed 'first bloom' (798 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 | 798 | '' |
Range: 550–706 GDD₃₂
(6yr)
Source: 'Master catalog (UMD), 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)
Data Maturity Baseline Extension data. Expert review underway.