Apple Serviceberry
Beginning of floweringAmelanchier x grandiflora
Rosaceae · [VERIFY] · native
Last updated
Upright deciduous shrub or small tree, 12 to 25 feet tall, with bronze emerging foliage maturing to glossy green and white flower clusters in spring. Dark blue berries follow flowering; leaves turn orange-red in fall.
Ornamental hybrid combining vigor with showy seasonality; prefers moist, well-drained soil and sun to part shade. Hardy and adaptable with minimal pest pressure. Excellent for screening, multi-season interest, and songbird habitat.
Quick Facts
Phenological Calendar
As of May 9, 2026, Puget Sound stations range from 1800.9 to 1983.6 GDD₃₂. Apple Serviceberry has passed beginning of flowering (980 GDD₃₂).
Regional Season Tracker
GDD₃₂ accumulation across 7 Puget Sound stations · as of May 9, 2026| Station | GDD₃₂ | Current Stage | Next | To Go |
|---|---|---|---|---|
| Issaquah / East King | 1,984 | Beginning of flowering | — | — |
| Kent / Auburn | 1,972 | Beginning of flowering | — | — |
| Seattle / UW | 1,954 | Beginning of flowering | — | — |
| Olympia / Tumwater | 1,913 | Beginning of flowering | — | — |
| Tacoma / Puyallup | 1,881 | Beginning of flowering | — | — |
| Bellingham / Whatcom | 1,863 | Beginning of flowering | — | — |
| Sequim / Rain Shadow | 1,801 | Beginning of flowering | — | — |
| Stage | GDD32 | Typical Window |
|---|---|---|
| ● Beginning of flowering BBCH 61 NOW | 980 | — |
| Full bloom BBCH 65 | 941 | — |
Source: UMD: extension.umd.edu) About GDD₃₂ →
Season tracker for Kent / Auburn as of May 9, 2026. Predicted dates use 16-day weather forecast through May 26, 2026, then climate normals.