Snowdrift Crabapple
Malus snowdrift
Rosaceae · broadleaf deciduous tree · introduced
Last updated
Data Maturity Structured
This profile synthesizes data from multiple published sources. Expert field review is in progress.
Quick Facts
Height
20 ft
Spread
20 ft (JFS; MSU E-2177 confirms 20')
Light
Full Sun
Hardiness
Zone Zones 3a–8b
Phenological Calendar
As of April 23, 2026, Puget Sound stations range from 1434.4 to 1592.7 GDD₃₂. Snowdrift Crabapple has passed 'full bloom' (1008 GDD₃₂).
Regional Season Tracker
GDD₃₂ accumulation across 7 Puget Sound stations · as of Apr 23, 2026| Station | GDD₃₂ | Current Stage | Next | To Go |
|---|---|---|---|---|
| Issaquah / East King | 1,593 | 'Full bloom' | — | — |
| Seattle / UW | 1,554 | 'Full bloom' | — | — |
| Kent / Auburn | 1,537 | 'Full bloom' | — | — |
| Olympia / Tumwater | 1,505 | 'Full bloom' | — | — |
| Bellingham / Whatcom | 1,483 | 'Full bloom' | — | — |
| Tacoma / Puyallup | 1,472 | 'Full bloom' | — | — |
| Sequim / Rain Shadow | 1,434 | 'Full bloom' | — | — |
| Stage | GDD32 | Typical Window |
|---|---|---|
| 'First bloom' BBCH '61' | 870 | '' |
| ● 'Full bloom' BBCH '65' NOW | 1008 | '' |
Range: 611–758 GDD₃₂
(6yr)
GDD = Growing Degree Days (base 32°F, Jan 1 start). Why base 32? Hover over GDD values for source details. Season tracker for Kent / Auburn as of Apr 23, 2026. Predicted dates use 16-day weather forecast through May 10, 2026, then climate normals.
Diseases (32)
Blueberry mosaic virus and related viruses Virus Diseases Venturia inaequalis Scab Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Phytophthora spp Phytophthora fruit rot Perennial Canker (Bull's-eye Rot) Nectria cinnabarina Nectria Twig Blight (Coral Spot) Nectria Canker (European Canker) Fruit russet Fruit Russeting Erwinia amylovora Fire Blight Cytospora spp. (Valsa spp., Leucostoma spp.) Cytospora Canker Rhizobium radiobacter (formerly Agrobacterium tumefaciens) Crown Gall Phytophthora cactorum (primary), P Crown and Collar Rot Burrknot Bitter Pit Apple mosaic Apple Mosaic Apple proliferation Apple Proliferation Apple dead Dead Spur Diplodia seriata and D Diplodia Canker Apple flat Flat Apple Disease Green Crinkle Disease Three viruses Latent Virus Diseases Several different Moldy Core and Core Rots Necrotic Leaf Blotch (Golden Leaf Drop) Isolation attempts Necrotic Leaf Spot Pythium spp., Phytophthora spp., Rhizoctonia spp., Fusari... Replant Disease Apple rubbery wood virus 1 and 2 Rubbery Wood and Flat Limb Thekopsora minima and Naohidemyces vaccinii Rust Apple scar skin viroid Scar Skin and Dapple Apple Botrytis cinerea, Penicillium spp., and others; abiotic d... Storage Problems Tomato ringspot Union Necrosis and Decline Twig Dieback and Canker Phytophthora syringae (primary), P Stem Rot
Pests (23)
Phyllonorycter blancardella Tentiform leafminer Malacosoma spp. Tent caterpillar Tetranychidae Spider mite Diaspidiotus perniciosus San Jose scale Parthenolecanium spp. Lecanium scale Tortricidae Leafroller Cicadellidae Leafhopper Archips argyrospila Fruittree leafroller Forficula auricularia Earwig Noctuidae Cutworms and Armyworms Cydia pomonella Codling moth Halyomorpha halys Brown marmorated stink bug Choreutis pariana Apple-and-thorn skeletonizer Rhagoletis pomonella Apple maggot Yponomeuta malinellus Apple ermine moth Aphidoidea Aphid Leafroller and Leaftier Enarmonia formosana Cherry bark tortrix Hyphantria cunea Fall webworm Lepidosaphes ulmi Oystershell scale Edwardsiana rosae Rose leafhopper Nematode, Dagger Nematode, Root-lesion