Sugar Tyme Crabapple

Full bloom

Malus 'Sutyzam'

Rosaceae · broadleaf deciduous tree · introduced

Last updated

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

Plant Profile

Size & Form

Height
18 ft
Spread
15 ft
Growth Rate
Medium to fast; reaches mature size in 15-20 years
Size at 20 yr
18 ft (typically reaches mature height around 15-20 years)
Lifespan
50-80 years typical for ornamental crabapples

Site Requirements

Light
Full sun (best flower production and disease resistance)
Soil Drainage
Well drained; tolerates a wide range of soil textures
Soil pH
5.5-7.5 (slightly acidic to neutral)
Water
Moderate
Drought Tolerance
Moderate; established trees tolerate seasonal drought typical of pnw summers
Hardiness
Zones 4–8

Ornamental Interest

Bloom Time
Late April to mid-May (Puget Sound); mid-season blooming
Fall Color
Yellow to yellow-bronze; not a primary ornamental feature
Origin
Cultivar; bred and selected by Jim Zampini at Lake County Nursery
Watch for this season

Bloom Infection Window

Active Conidial Spread

First Flight

Diseases: Regionally Documented (3)

Diseases: Other Associations (1)

Pests: Regionally Documented (3)

Phenological Calendar

As of June 3, 2026, Puget Sound stations range from 2435.5 to 2672.8 GDD₃₂. Sugar Tyme Crabapple has passed full bloom (1305 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
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 Jun 3, 2026. Predicted dates use 16-day weather forecast through Jun 19, 2026, then climate normals.

Data Maturity
Structured Multiple sources. Expert review underway.