Eastern Redbud
'Full bloom'Cercis canadensis
Fabaceae · broadleaf deciduous tree · introduced
Last updated
Eastern redbud (Cercis canadensis, Fabaceae) is a fast-growing deciduous tree native to eastern North America from New Jersey to Florida, west to Missouri and northern Mexico. It typically reaches 20 to 30 feet tall with a rounded, often multi-trunked form. Small rosy-pink pea-like flowers bloom profusely on bare branches in early spring before leaves emerge, making it a precocious bloomer. Dense, dark green, heart-shaped leaves turn golden yellow in fall. Flat pods (5 to 7.5 centimeters) may persist through winter.
Eastern redbud grows in part shade on moist, well-drained soils (pH 6.0 to 8.0) with low water needs and high drought tolerance, hardy in Zones 6b to 9b. It tolerates deer browse, clay soil, and black walnut proximity. The species does not transplant well and should be planted young. Documented diseases include vascular streak dieback and verticillium wilt. It is a larval host for 12 Lepidoptera species including Henry's Elfin butterfly. Cultivars include 'Forest Pansy' (purple foliage, 20 feet) and 'Ruby Falls' (weeping, 6 to 8 feet). A white-flowered form (var. alba) is also available.
Plant Profile
Size & Form
Site Requirements
Ornamental Interest
Root Colonization Period
Diseases: Regionally Documented (2)
Phenological Calendar
As of June 3, 2026, Puget Sound stations range from 2435.5 to 2672.8 GDD₃₂. Eastern Redbud has passed 'full bloom' (973 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 | 'Full bloom' | — | — |
| Kent / Auburn | 2,665 | 'Full bloom' | — | — |
| Seattle / UW | 2,610 | 'Full bloom' | — | — |
| Olympia / Tumwater | 2,570 | 'Full bloom' | — | — |
| Tacoma / Puyallup | 2,535 | 'Full bloom' | — | — |
| Bellingham / Whatcom | 2,533 | 'Full bloom' | — | — |
| Sequim / Rain Shadow | 2,436 | 'Full bloom' | — | — |
View full calendar (2 stages)
| Stage | GDD32 | Typical Window |
|---|---|---|
| 'First bloom' BBCH '61' | 838 | '' |
| ● 'Full bloom' BBCH '65' NOW | 973 | '' |
Source: 'Master catalog (OSU, UMD), converted GDD50->GDD32 via Kent bloom-date mapping' 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.