Quercus kelloggii

California Black Oak

Recalcitrant seeds need refrigeration. Since shipping times are out of our control, we are not liable for seed condition upon arrival.
  • Quercus kelloggii

Please select the quantity desired, and we will advise availability and price as soon as possible.


Min. hardiness zone:
Item ID:

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New Zealand

Growing Info

Scarification: Soak in water, let stand in water for 24 hours
Stratification: cold stratify for 60 days , or until radicle emergence
Germination: sow 1-2" deep, tamp the soil, mulch the seed bed

Other: fall sowing in mulched beds is prefered to artificial stratification 

Quercus kelloggii, also known as California Black Oak or Kellogg Oak, is a native oak tree in western North America. It can grow in various types of soil, but well-drained soil is crucial. The tree is known for its large acorns and deeply lobed leaves, and its bark becomes thick and plate-like with age. California Black Oak is a vital species for wildlife, providing food and cover for many animals, including livestock. The tree is also used for making furniture, pallets, and construction timber. Nowadays, it is cultivated as an ornamental tree in native plant, drought tolerant, water-conserving, and habitat gardens. Quercus kelloggii comprises a total volume of 29% of hardwood timber resources in California and is the major hardwood sawn into lumber there. However, the species has decreased from its historic abundance due to drought, disease, animal foraging, logging practices, fire suppression, and human impacts. It is important to protect and conserve the California Black Oak as a critical species for wildlife and a valuable hardwood resource.

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