— Short, snippet-friendly answers to the most-asked questions about Willow Oak (Quercus phellos). For the full profile with citations, open the main page.
Willow Oak (Quercus phellos) is a deciduous tree native to the southeastern United States, including Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Illinois, Kentucky, Louisiana, Maryland, Mississippi, Missouri, New Jersey, New York, North Carolina, Oklahoma… Willow Oak (Latin: Quercus phellos, family Fagaceae) is a medicinal plant catalogued in PlantSage.
Willow Oak is most often used to support immune support. Each claim is rated by evidence strength - see the full profile for citations.
Willow Oak is generally considered safe when used at traditional doses. Always consult a clinician before using any herbal preparation — especially during pregnancy, breastfeeding, while on medication, or for children.
Willow Oak is a member of the Fagaceae family native to ALA, ARK, DEL, WDC, FLA, and GEO. Willow Oak prefers full to partial sun and requires moist, medium to heavy (clay) soil with a pH between 4.5 and 6.5.
Willow Oak grows best in USDA zone 5-9, full sun, partial sun/shade light, and moist water. Detailed sowing, propagation, and care notes are on the full profile.
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