Red Barron Crabapple

Full bloom

Malus 'Red Barron'

Rosaceae · broadleaf deciduous tree · introduced

Last updated

Red Barron is the established narrow columnar purple-foliage crabapple for utility-line plantings — included on J. Frank Schmidt's UtiliTrees™ list specifically for sites where overhead lines constrain canopy height. The 18 × 8 ft narrow columnar form combined with ascending branch structure makes the cultivar a practical choice for street-tree applications under utility infrastructure. Reddish-purple spring foliage maturing through bronze-green provides multi-season interest. Disease resistance is mid-tier (Fair on scab, Good on fire blight) — meaningful regional caveat for maritime PNW where scab pressure is high; the modern alternative 'Raspberry Spear®' offers similar narrow columnar purple form with Excellent disease resistance across all four major diseases. Use Red Barron where utility-tree designation, historical availability, or price point favors it over Raspberry Spear; specify Raspberry Spear when disease resistance is the priority. Cross-reference modern alternative: 'Raspberry Spear®' (similar narrow columnar purple form, Excellent disease resistance across all four diseases).

— Chris Welch, ISA Certified Arborist

Plant Profile

Size & Form

Height
18 ft
Spread
8 ft
Growth Rate
Medium
Size at 20 yr
18 ft (typically reaches mature size around 20 years)
Lifespan
50-80 years typical for ornamental crabapples

Site Requirements

Light
Full Sun
Soil Drainage
Well Drained
Soil pH
5.5-7.5 (slightly acidic to neutral)
Water
Moderate
Drought Tolerance
Moderate; established trees tolerate seasonal drought
Hardiness
Zones 4–8

Ornamental Interest

Bloom Time
Late April to mid-May (Puget Sound); mid-season blooming
Fall Color
Yellow-bronze with purple tones
Origin
Cultivar; Specific parentage not in public record.
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. Red Barron 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)
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.