Marilee Crabapple
Full bloomMalus 'Jarmin'
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. Marilee 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) |
| ● 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)
Marilee® fills a specific design niche: virtually fruitless + narrow upright form + white double flowers. The combination is unique among common crabapples. For PNW landscapes specifying fruitless crabapples for patios, courtyards, near pools, sidewalks, and under utility lines, Marilee complements the older 'Spring Snow' (20-25 × 15-22 ft single white) and 'Prairie Rose' (20 × 18 ft double pink) by offering the narrow upright form (24 × 10 ft) those alternatives lack. Good-to-excellent disease resistance per JFS supports reliable performance. The unusually large double white flowers give Marilee substantially more visual impact at peak bloom than Spring Snow. Cross-reference fruitless crabapple decision tree: 'Spring Snow' (single white, rounded form, more scab pressure), 'Prairie Rose' (double pink, rounded form), 'Marilee' (double white, narrow upright form). Cross-reference fruitless decision tree: 'Spring Snow' (single white, rounded), 'Prairie Rose' (double pink, rounded), 'Marilee®' (double white, narrow upright).
— Chris Welch, ISA Certified Arborist