← Plants

Ohio Buckeye

Aesculus glabra

Sapindaceae, Hippocastanaceae · broadleaf deciduous tree · native

Last updated

Data Coverage 4 of 6 dimensions
Site Data
Threats
Cultivars
Phenology
GDD Thresholds
Puget Sound

Quick Facts

Height
20–40 ft
Growth Rate
Medium
Light
Full Sun to Shade
Soil
Moist
Water
Moderate
Hardiness
Zone Zones 4a–8b
Bloom Time
April to May
Fall Color
Brown, orange, red, yellow
Origin
from Pennsylvania to Nebraska, Kansas and Alabama

Phenological Calendar

As of April 3, 2026, Puget Sound stations range from 1070 to 1180.6 GDD₃₂. Ohio Buckeye has reached 'first bloom' (1008 GDD₃₂) and is approaching 'full bloom', predicted around Apr 9.

Regional Season Tracker

GDD₃₂ accumulation across 7 Puget Sound stations · as of Apr 3, 2026
Station GDD₃₂ Current Stage Next To Go
Issaquah / East King 1,181 'First bloom' 'Full bloom' 48
Seattle / UW 1,171 'First bloom' 'Full bloom' 58
Kent / Auburn 1,111 'First bloom' 'Full bloom' 118
Olympia / Tumwater 1,106 'First bloom' 'Full bloom' 123
Bellingham / Whatcom 1,101 'First bloom' 'Full bloom' 128
Tacoma / Puyallup 1,075 'First bloom' 'Full bloom' 154
Sequim / Rain Shadow 1,070 'First bloom' 'Full bloom' 159
Stage GDD32 Typical Window
'First bloom' BBCH '61' NOW 1008 ''
'Full bloom' BBCH '65' NEXT 1229 '' est. Apr 9 (forecast)
Range: 768–918 GDD₃₂ (6yr)

GDD = Growing Degree Days (base 32°F, Jan 1 start). Why base 32? Hover over GDD values for source details. Season tracker for Kent / Auburn as of Apr 3, 2026. Predicted dates use 16-day weather forecast through Apr 19, 2026, then climate normals.

Diseases (3)