One of the hardiest Conestoga selections, consistently ranking just below Poncirus types in cold resistance. Flowers relatively early in life (first bloom at 4 years) and is productive, but fruit quality remains close to Poncirus in bitterness. Early ripening (October) and suitable primarily for diluted beverage use rather than fresh consumption. The Conestoga selections are a group of F2 citrange hybrids derived from open-pollinated seed of C-35 citrange. The project was initiated in 2018 in southeastern Pennsylvania (USA) by forum member “kumin” on Tropical Fruit Forum, with the explicit goal of identifying individuals approaching the winter hardiness of Poncirus trifoliata while retaining improved fruit quality relative to typical citranges. The selections were named “Conestoga” after the nearby Conestoga River. An initial planting of approximately 20,000+ seedlings was established. Based on citrange reproductive biology, an estimated ~15% were zygotic and ~85% nucellar, yielding an effective recombined population of roughly 3,000 individuals. Seedlings were germinated in April 2018 and planted outdoors in June 2018 with no winter protection during their first winter. The first major selection event occurred during the winter of 2018–2019, when temperatures fell to approximately −11.8°F (−24°C). These temperatures are within the normal survival range of Poncirus but represent a severe test for citrange-derived hybrids. Following that winter, only a small fraction survived. Approximately 12 normal-sized above-snow stem-hardy individuals remained, along with a group of dwarfed or snow-protected survivors. Roughly 69 selections were retained for continued evaluation. Hardiness rankings were reported to be highly consistent year-to-year. Individuals that barely survived mild winters were consistently the first to fail during severe cold events, reinforcing the stability of genetic differences in cold tolerance. Across the surviving population, strong poncirus-like morphology generally correlated with superior cold resistance, while more citrus-like foliage (evergreen habit, unifoliate expression) tended to show reduced winter survival. Conestoga selections typically break bud 10–14 days later than Poncirus, suggesting retained dormancy control. However, late-season growth flushes have shown greater vulnerability to dieback below approximately −10°F compared to pure Poncirus. Most Conestoga selections are not refined enough for fresh consumption. However, several lines—particularly Conestoga 010 and 026—have produced fruit suitable for dilution and sweetened beverage applications (“ades”), with reduced bitterness relative to Poncirus. The Conestoga selections represent one of the largest documented outdoor F2 citrange cold trials in North America. Winter 2018–2019: The defining selection winter. Temperatures fell to approximately −11.8°F (−24°C), with additional lows of +3°F, +2°F, and +10°F during sustained cold conditions. These temperatures are fully tolerated by Poncirus but were devastating to most F2 citranges. The vast majority of the 20,000 seedlings perished. Survivors formed the foundation of the Conestoga selections. This winter acted as the primary natural hardiness filter. Winter 2019–2020: A relatively mild winter with a lowest temperature near +10°F (−12°C). However, a significant late spring cold event followed an early warm period, causing freeze injury to actively growing tissue. Damage to Conestoga 011 paralleled that of Poncirus but was not more severe. This season highlighted dormancy stability and vulnerability to late freeze events. Winter 2020–2021: Another mild winter with lows near 10°F (−12°C). No major extreme events occurred. Limited differentiation among selections was observed. Winter 2021–2022: No extreme cold events were specifically recorded. Continued moderate winter exposure allowed selections to mature and transition toward fruiting age without catastrophic losses. Winter 2022–2023: A stronger cold event brought temperatures down to approximately 2°F (−16°C) during high winds. Hardiness rankings were reinforced, with Poncirus and Poncirus+ ranking highest, followed closely by Conestoga 011, 010, 006, and 026. More citrus-like selections ranked lower in tolerance. Winter 2023–2024: The lowest recorded temperature was approximately 6°F (−14°C). Moderate stress occurred, but the established hierarchy among selections remained stable. Winter 2024–2025: Temperatures reached approximately −8°F (−22°C), described as an excellent year for distinguishing hardy from exceptionally hardy individuals. Conestoga 006, 010, 026, and 128 approached Poncirus in cold resistance. Conestoga 011 survived but sustained notable damage. Selections such as 058 and 067 failed to persist outdoors under repeated exposure, and Conestoga 121 was killed back to ground level. This winter further confirmed multi-year consistency in cold tolerance performance.