Sugar Tyme Crabapple
Full bloomMalus 'Sutyzam'
Rosaceae · broadleaf deciduous tree · introduced
Last updated
Quick Facts
Bloom Infection Window
Spring Emergence / Primary Infection
Pupation
Phenological Calendar
As of May 13, 2026, Puget Sound stations range from 1906.2 to 2098.2 GDD₃₂. Sugar Tyme Crabapple has passed full bloom (1305 GDD₃₂).
Regional Season Tracker
GDD₃₂ accumulation across 7 Puget Sound stations · as of May 13, 2026| Station | GDD₃₂ | Current Stage | Next | To Go |
|---|---|---|---|---|
| Issaquah / East King | 2,098 | Full bloom | — | — |
| Kent / Auburn | 2,089 | Full bloom | — | — |
| Seattle / UW | 2,063 | Full bloom | — | — |
| Olympia / Tumwater | 2,025 | Full bloom | — | — |
| Tacoma / Puyallup | 1,993 | Full bloom | — | — |
| Bellingham / Whatcom | 1,972 | Full bloom | — | — |
| Sequim / Rain Shadow | 1,906 | Full bloom | — | — |
| Stage | GDD32 | Typical Window |
|---|---|---|
| Beginning of flowering BBCH 61 | 990 | Late April (Puget Sound); mid-season blooming |
| ● Full bloom BBCH 65 NOW | 1305 | Late April to early May (Puget Sound) |
Source: HortGuide regional interpretation based on Morton Arboretum bloom timing About GDD₃₂ →
Season tracker for Kent / Auburn as of May 13, 2026. Predicted dates use 16-day weather forecast through May 29, 2026, then climate normals.
Diseases: Regionally Documented (3)
Diseases: Other Associations (1)
Pests: Regionally Documented (3)
Sugar Tyme® is one of the most widely planted crabapples in Puget Sound landscapes and consistently shows up at regional nurseries (Sky, Wells Medina, Magnolia Garden Center, Furney's). The cultivar's combination of good-to-excellent disease resistance, upright moderate size (18 ft × 15 ft), exceptionally persistent fragrant white bloom, and bright red fruit that holds through winter makes it a defensible default choice for residential yards, street tree planting strips, and commercial landscape installations. The upright oval form is a useful contrast to the more typical rounded crabapple silhouette — it fits narrower spaces than 'Donald Wyman' (24 ft spread) while offering similar white-flower-with-red-fruit aesthetic. Disease resistance is rated Good on scab and fire blight per JFS — not the absolute best (that distinction belongs to 'Adirondack' and 'Prairifire') but reliably tolerable in maritime PNW conditions. The persistent fruit is genuinely useful for winter wildlife forage; birds often leave Sugar Tyme fruit until alternate sources are depleted, providing late-season forage in January and February. Bloom timing is mid- season (~220-290 GDD50). For PNW homeowners walking through a nursery looking for "an upright crabapple with persistent fruit and reliable disease resistance," Sugar Tyme is the standard recommendation.
— Chris Welch, ISA Certified Arborist