IXL is a selected pawpaw cultivar resulting from a controlled Overleese×Davis cross in Eaton Rapids, Michigan. It is known for its large fruit size, yellow-to-orange pulp, and superior flavor profile. Generally characterized as a late-ripening variety, it displays high quality but requires a longer growing season.
Origin: Overleese × Davis (controlled cross), Eaton Rapids, MI. Fruit Size: Large; dimensions range from 9.5–15.6 cm in length and 5.4–8.6 cm in width. Sources provide varying benchmarks, such as approximately 340 g (Cothron) or a measured mean of ≈213 ± 63.6 g (Brannan et al.). The 340 g (approx. 12 oz) figure from Cothron likely represents a potential size for showcase specimens or typical large fruit in optimal conditions. The Brannan et al. figure (213 g) reflects a statistical average from specific research samples, showing realistic variability.
Differences in reported weights are often due to variations in sample size, growing conditions, tree age, and whether the figure is an aspirational benchmark or a statistical mean. Both have value: one for potential, the other for typical expectations.
Yellow to orange with a creamy, custard-like texture.
Late: typically ripens around the second week of October in Michigan. In warmer zones like Kentucky, it may ripen by late September.
Generally rated as good to excellent, frequently earning high scores in public tastings.
IXL is described as a reliable and high-yielding variety. Like most cultivar trees, grafted specimens typically begin fruiting within 3–5 years of planting.
Growth Vigor: Moderate (vigorous in favorable sites); mature height reaches ≈4–6 m depending on pruning and training.
Form: typical oval-oblong shape; skin is thin and shifts from green to yellow-green upon ripeness. Texture: creamy and custard-like. Seeds: many reports mention a relatively low seed percentage, though specific ratios vary by season.
Cross-pollination is essential. IXL is not reliably self-fertile; ensure other cultivars or selections with overlapping bloom periods are planted nearby to secure a crop. Hand pollination is frequently used to boost fruit set.
USDA zones 5–9: established trees withstand winters down to −25 to −28 °C. Originating from Michigan, IXL is well-attuned to temperate climates with cold winters.
Standard rules for Asimina triloba apply: monitor for Phyllosticta leaf spot during exceptionally damp springs and track local pest pressure. No specific extreme vulnerabilities are linked to this cultivar.
IXL is a large-fruited selection boasting excellent flavor and late maturity. While reported weights range from 213 g (research mean) up to 340 g (showcase potential), it remains a premium choice for growers with a sufficient frost-free window.