Green Manzanita Greenleaf Manzanita
'Flower buds visible'Arctostaphylos patula
Ericaceae · broadleaf evergreen shrub · introduced
Last updated
Greenleaf manzanita is recognized by its smooth reddish-brown exfoliating bark and bright green, urn-shaped leaves. Native to open coniferous forest slopes across western North America at moderate to high elevations, it thrives where cool temperatures and rocky soil match its ecological niche.
Grows to 7 feet tall in full sun with moderate water needs and high drought tolerance once established (Zones 5a to 8b). Prefers well-drained, adaptable soils. Pinkish-white flowers appear in late spring; resprout ability aids recovery from disturbance. Monitor for leaf spot, rust, and Phytophthora dieback, common in humid conditions.
Plant Profile
Size & Form
Site Requirements
Ornamental Interest
Uredinial Stage (Summer)
Peak Population & Dispersal
Adult Emergence & Foliar Feeding
Diseases: Regionally Documented (5)
Pests: Regionally Documented (3)
Phenological Calendar
As of June 3, 2026, Puget Sound stations range from 2435.5 to 2672.8 GDD₃₂. Green Manzanita Greenleaf Manzanita has passed 'flower buds visible' (840 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 | 'Flower buds visible' | — | — |
| Kent / Auburn | 2,665 | 'Flower buds visible' | — | — |
| Seattle / UW | 2,610 | 'Flower buds visible' | — | — |
| Olympia / Tumwater | 2,570 | 'Flower buds visible' | — | — |
| Tacoma / Puyallup | 2,535 | 'Flower buds visible' | — | — |
| Bellingham / Whatcom | 2,533 | 'Flower buds visible' | — | — |
| Sequim / Rain Shadow | 2,436 | 'Flower buds visible' | — | — |
View full calendar (3 stages)
| Stage | GDD32 | Typical Window |
|---|---|---|
| 'Bud break' BBCH '07' | 840 | '' |
| 'First bloom' BBCH '61' | 840 | '' |
| ● 'Flower buds visible' BBCH '51' NOW | 840 | '' |
Source: 'NPN citizen science observations (WA+OR), n=10, median. services.usanpn.org' 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.