Sugar Tyme Crabapple

Full bloom

Malus 'Sutyzam'

Rosaceae · broadleaf deciduous tree · introduced

Last updated

Quick Facts

Height
18 ft (J. Frank Schmidt Crabapple Chart; Missouri Botanical Garden: 15-18 ft)
Spread
15 ft (J. Frank Schmidt Crabapple Chart; Missouri Botanical Garden: 12-18 ft)
Growth Rate
Medium to fast — mississippi greens notes 'fast growth rate'; reaches mature size in 15-20 years (source: mississippi greens; missouri botanical garden)
Light
Full Sun (Best Flower Production And Disease Resistance) (Source: Missouri Botanical Garden; Usu Extension)
Soil
Well Drained; Tolerates A Wide Range Of Soil Textures (Source: Missouri Botanical Garden)
Water
Moderate
Hardiness
Zone Zones 4–8 (J. Frank Schmidt Crabapple Chart; Missouri Botanical Garden; USU Extension)
Bloom Time
Late April to mid-May (Puget Sound); mid-season blooming (source: Missouri Botanical Garden; HortGuide regional interpretation)
Fall Color
Yellow to yellow-bronze; not a primary ornamental feature (source: hortguide editorial based on missouri botanical garden description)
Origin
Cultivar; bred and selected by Jim Zampini at Lake County Nursery
Watch for this season

Bloom Infection Window

Spring Emergence / Primary Infection

Codling mothModerate

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

Data Maturity
Structured Multiple sources. Expert review underway.