David's Viburnum
fruit developmentViburnum davidii
Adoxaceae · broadleaf evergreen shrub · introduced
Last updated
David's viburnum is an evergreen shrub from western China reaching 4 ft with slow growth and pink flowers. It blooms on previous season's wood from April to May with small, flat-topped flower clusters followed by metallic blue fruit.
David's viburnum is hardy in zones 7b-8b and thrives in partial shade with moist, moderate-moisture soil (pH 5.5-7.0). It is useful for hedging and has low maintenance requirements. It attracts butterflies and is notably slow-establishing.
Plant Profile
Size & Form
Site Requirements
Ornamental Interest
Field Observations
Active Conidial Spread
Larval Hatching & Feeding
Adult Emergence & Foliar Feeding
Diseases: Regionally Documented (7)
Pests: Regionally Documented (3)
Phenological Calendar
As of June 3, 2026, Puget Sound stations range from 2435.5 to 2672.8 GDD₃₂. David's Viburnum has passed fruit development (2398 GDD₃₂).
Regional Season Tracker
GDD₃₂ accumulation across 7 Puget Sound stations · as of Jun 3, 2026| Station | GDD₃₂ | Current Stage | Next | To Go |
|---|---|---|---|---|
| Issaquah / East King | 2,673 | fruit development | — | — |
| Kent / Auburn | 2,665 | fruit development | — | — |
| Seattle / UW | 2,610 | fruit development | — | — |
| Olympia / Tumwater | 2,570 | fruit development | — | — |
| Tacoma / Puyallup | 2,535 | fruit development | — | — |
| Bellingham / Whatcom | 2,533 | fruit development | — | — |
| Sequim / Rain Shadow | 2,436 | fruit development | — | — |
View full calendar (2 stages)
| Stage | GDD32 | Typical Window |
|---|---|---|
| Flower buds visible BBCH 50 | — Observed | April |
| ● fruit development BBCH 71 NOW | 2398 Observed | — |
Source: Field observation, Seattle, WA (Kubota Garden). About GDD₃₂ →
Season tracker for Kent / Auburn as of Jun 3, 2026. Predicted dates use 16-day weather forecast through Jun 19, 2026, then climate normals.