Genus guide
Quercus — 22 species
Quercus is a vast genus of deciduous and evergreen trees — including Burr Oak, White Oak, Swamp White Oak, and Chinkapin Oak — prized as landscape specimens for their spreading canopies, wildlife value, and remarkable longevity across USDA hardiness zones 3–9. Oaks thrive in full sun and deep, well-drained soil; established trees are highly drought-tolerant. All Quercus species are toxic to cats and dogs (ASPCA-listed); acorns, leaves, and bark contain tannins that cause gastrointestinal upset and, with repeated ingestion, potential kidney damage.
All Quercus species we cover
- Black Oak
- Burr Oak
- Chestnut Oak
- Chinkapin Oak
- Columnar English Oak
- Downy Oak
- Emory Oak
- Holm Oak
- Hungarian Oak
- Northern Red Oak
- Overcup Oak
- Pin Oak
- Quercus coccinea
- Quercus robur 'Fastigiata'
- Sawtooth Oak
- Sessile Oak
- Shingle Oak
- Swamp White Oak
- Turkey Oak
- Valonia Oak
- White Oak
- Willow Oak
Quercus — frequently asked questions
Are Quercus plants toxic to cats and dogs?
Most Quercus are not pet-safe. Of the 22 Quercus species in the Growli library, 22 (100%) carry a toxic or mildly-toxic ASPCA classification and 0 are pet-safe. Always confirm the exact species on its pet-safety page before trusting it around cats or dogs.
How much light do Quercus plants need?
Most Quercus do best in direct sun. If yours stretches toward the window or loses its variegation it wants more light; scorched or bleached leaves mean it is getting too much direct sun.
Are Quercus easy to care for?
Some Quercus suit more experienced growers — several want strong light, sharp drainage or a specific seasonal rhythm. Check the individual species page for the exact regime.
How many Quercus varieties are there?
Growli's care library covers 22 Quercus species and varieties — browse them all above. They share a similar light, water and soil pattern, so once you learn one Quercus, the rest follow closely.
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