Common Pawpaw Custard Apple
Asimina triloba
Annonaceae · broadleaf deciduous tree · native
Last updated
Data Maturity Baseline
This profile contains verified botanical data. Regional field notes and expert review are in progress.
Quick Facts
Height
15–20 ft
Spread
13 ft
Growth Rate
Slow
Light
Part Shade
Soil
Wet Tolerant
Water
Moderate
Hardiness
Zone Zones 5a–8b
Bloom Time
April to May
Fall Color
Yellow
Origin
extends from Ontario, north of Lake Erie
Phenological Calendar
As of April 23, 2026, Puget Sound stations range from 1434.4 to 1592.7 GDD₃₂. Common Pawpaw Custard Apple has reached 'fall color / leaf senescence' (1392 GDD₃₂) and is approaching 'flower buds visible', predicted around Apr 27.
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 | 'Fall color / leaf senescence' | 'Flower buds visible' | 13 |
| Seattle / UW | 1,554 | 'Fall color / leaf senescence' | 'Flower buds visible' | 52 |
| Kent / Auburn | 1,537 | 'Fall color / leaf senescence' | 'Flower buds visible' | 69 |
| Olympia / Tumwater | 1,505 | 'Fall color / leaf senescence' | 'Flower buds visible' | 102 |
| Bellingham / Whatcom | 1,483 | 'Fall color / leaf senescence' | 'Flower buds visible' | 123 |
| Tacoma / Puyallup | 1,472 | 'Fall color / leaf senescence' | 'Flower buds visible' | 134 |
| Sequim / Rain Shadow | 1,434 | 'Fall color / leaf senescence' | 'Flower buds visible' | 172 |
| Stage | GDD32 | Typical Window |
|---|---|---|
| ● 'Fall color / leaf senescence' BBCH '93' NOW | 1392 | '' |
| ○ 'Flower buds visible' BBCH '51' NEXT | 1606 | '' est. Apr 27 (forecast) |
| 'Bud break' BBCH '07' | 1614 | '' est. Apr 27 (forecast) |
| 'First bloom' BBCH '61' | 1614 | '' est. Apr 27 (forecast) |
| 'Leaf emergence' BBCH '11' | 1614 | '' est. Apr 27 (forecast) |
GDD = Growing Degree Days (base 32°F, Jan 1 start). Why base 32? GDD₃₂ thresholds from USA National Phenology Network citizen science observations (WA+OR). Season tracker for Kent / Auburn as of Apr 23, 2026. Predicted dates use 16-day weather forecast through May 9, 2026, then climate normals.
Diseases (15)
Blueberry mosaic virus and related viruses Virus Diseases Venturia inaequalis Scab Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Phytophthora spp Phytophthora fruit rot Cryptosporiopsis perennans Perennial Canker (Bull's-eye Rot) Nectria cinnabarina Nectria Twig Blight (Coral Spot) Neonectria ditissima 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 Non-pathogenic (genetic/physiological) Burrknot Non-pathogenic (calcium deficiency) Bitter Pit Neofabraea spp. (N Anthracnose and Bull's-eye rot
Pests (16)
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