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Coral Burst Crabapple

Malus Coralburst

Rosaceae · [VERIFY] · introduced

Last updated

Data Coverage 3 of 6 dimensions
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Phenology
GDD Thresholds
Puget Sound

Malus 'Coralburst' (Rosaceae) is a compact deciduous crabapple cultivar, typically grafted onto a standard to form a small, rounded tree. Double coral-pink flowers appear in profusion in spring. Small persistent fruit follows.

Coralburst performs best in full sun on well-drained soil. Bloom begins around 217 GDD (base 50 F) with full bloom near 263 GDD, making it one of the earlier-blooming crabapple cultivars. Its compact size suits smaller garden spaces and street tree plantings.

Quick Facts

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Hardiness
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Origin
cultivar from Asian species

Phenological Calendar

Regional Season Tracker

GDD₃₂ accumulation across 7 Puget Sound stations · as of Mar 30, 2026
Station GDD₃₂ Current Stage Next To Go
Issaquah / East King 1,116 Beginning of flowering Full bloom 68
Seattle / UW 1,112 Beginning of flowering Full bloom 72
Olympia / Tumwater 1,049 Beginning of flowering Full bloom 136
Kent / Auburn 1,048 Beginning of flowering Full bloom 136
Bellingham / Whatcom 1,041 Beginning of flowering Full bloom 143
Tacoma / Puyallup 1,017 Beginning of flowering Full bloom 167
Sequim / Rain Shadow 1,012 Beginning of flowering Full bloom 172
Stage GDD32 Typical Window
● Beginning of flowering BBCH 61 NOW 977 —
○ Full bloom BBCH 65 NEXT 1184 — est. Apr 7 (forecast)
Regional estimate
Range: 635–790 GDD₃₂ (6yr)

GDD = Growing Degree Days (base 32°F, Jan 1 start). Why base 32? Source GDD₅₀ thresholds from Herms 2004 (OSU, Secrest Arboretum, Ohio) and UMD IPMnet (Gill & Klick, mid-Atlantic), converted to GDD₃₂ via Kent bloom-date mapping. Season tracker for Kent / Auburn as of Mar 30, 2026. Predicted dates use 16-day weather forecast through Apr 15, 2026, then climate normals.