Northern Red Oak: Guidance for Seed Transfer Within the Eastern United States
Northern red oak (Quercus rubra L.) is a large-seeded hardwood that grows in forests across eastern North America. Genetic diversity of this species is high due to high levels of seed dispersal and pollen flow and from hybridization with other species in the red oak section. Hybridization occurs readily across its range except in the northern parts of the range where other species in the red oak family are less common. Northern red oak is expected to thrive in a future climate because of its genetic diversity and inherent plasticity. Common garden studies revealed relatively weak clines for growth traits. No empirical transfer distances have been suggested, but distances of 200 mi (322 km), or roughly 3 degrees latitude northward, is a safe recommendation to avoid phenological mismatches. Oak wilt, a pathogen of concern, is slowly spreading across its range and may become more problematic in the future. Several insects impact northern red oak but are generally more problematic in older stands or stands that are weakened by other causes.
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Author(s): Carolyn C. Pike, Philip A. O'Connor
Publication: Tree Planters' Notes - Volume 65, Number 1 (2022)
Volume: 65
Number: 1
