Weight: 225-450 g
Ripening: mid-season
Asimicin: 1%
Disease Resistance: 8/10
Cold Hardiness: 8/10
Yield: 8/10
Tree Height: 4-6 m
Origin: Tom Wahl / Red Fern Farm Selection, Iowa (USA)
Taste: Characterized by a robust, deeply sweet profile; celebrated for its complex tropical notes and an exceptionally smooth, fiberless finish.
Rigel® is a heavy-yielding selection from the Iowa-based Red Fern Farm program. It is specifically bred to combine massive fruit size with a flavor profile that rivals the top-tier Peterson hybrids. The tree is noted for its structural strength and its ability to carry large clusters without significant branch damage.

Key Points

  • Provenance: Selected by Tom Wahl at Red Fern Farm in Wapello, Iowa, ensuring elite cold hardiness.
  • Hybrid Vigor: Believed to be a deliberate selection of the world-class Shenandoah™ × Susquehanna™ lineage.
  • Fruit Magnitude: Produces large-to-extra-large fruits (225–450 g); a primary choice for market-grade sizing.
  • Meat Content: Features an exceptionally low seed percentage, maximizing the edible yield per fruit.
  • Seasonality: A reliable mid-season ripener, fitting perfectly into the peak harvest window of September.
  • Yield Dynamics: Characterized as "heavy-bearing," making it highly attractive for both commercial orchards and serious home growers.
  • Resilience: Cold-hardy through USDA Zone 5; exhibits the sturdy skeletal structure required for high-volume crops.
  • Market Availability: A specialty variety available through elite nurseries such as Red Fern Farm and Peaceful Heritage.

Variety Description

Summary

Rigel is the "Star of the North." Developed in the demanding climate of Iowa by veteran grower Tom Wahl, it was selected to prove that elite tropical fruit quality can be achieved in the American heartland. It is a variety that prioritizes efficiency—large fruits, few seeds, and a productive habit. For the grower who wants a "sure thing" in terms of fruit size and dessert quality, Rigel represents the pinnacle of modern Midwestern selection work.

Foundations and Provenance

Isolated at Red Fern Farm, Rigel is part of a series of astronomical-named cultivars (including Regulus and Rigel) that were selected for their superior performance in trial orchards. It carries the pedigree of the famous Peterson hybrids but has been vetted specifically for the volatile spring and autumn temperatures of the Midwest.

Fruit Specifications: Bold and Buttery

Physical Attributes: The fruit is symmetrical and visually impressive, often weighing close to a pound. The skin is robust enough for light handling. Palette: It deliver a rich, sweet experience that avoids the "wild" resinous notes sometimes found in lesser varieties. Texture: The pulp is buttery and custard-like, entirely free of the stringy fiber that can detract from the eating experience of unselected varieties.

Orchard Productivity

Consistency: Rigel is noted for its annual reliability. It doesn't suffer from the "alternate bearing" (fruition every other year) that plagues many wild-derived trees. Structure: The tree grows with a clean, open canopy that allows for good sunlight penetration, which is vital for the development of the high brix levels the variety is known for.

Management and Logistics

Maturity Timing: In its native Iowa, it ripens comfortably in September. This ensures that the fruit reaches its full potential before the shorter days of late autumn set in. Picking Window: Because of its dense flesh, it has a slightly wider harvest window than the softer "pudding-style" varieties like Overleese.

Environmental Adaptation

Perfectly adapted to USDA Zones 5-7. It is a vigorous grower that establishes itself quickly and begins fruiting at a relatively young age for the genus.

Conclusion

Rigel is for the grower who wants "Commercial Grade" results in their own backyard. It provides the size, flavor, and high productivity that made the modern pawpaw industry possible, all wrapped in a tree that is built for northern resilience. It is an essential variety for any serious orchardist looking to push the boundaries of fruit quality.

Breed Performance Summary

Indicator Cultivar Metric
Heritage Line Tom Wahl / Red Fern Farm (Iowa)
Average Fruit Mass Large (≈225–450 g)
Yield Intensity High (Heavy-Bearing)
Flavor Intensity Robust / Deeply Sweet
Seed-to-Pulp Ratio Very Low
Maturity window Mid-Season
Hardiness Grade Superior Northern Resilience (USDA 5-8)
Market Segment Commercial Orchard / Specialist Dessert Grade

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