Quercus douglasii (Blue Oak) tree in spring hills with mist

Quercus douglasii, commonly known as blue oak, is a drought-tolerant deciduous tree adapted to many summer-dry climate gardens. Native to California and found primarily in the foothills of the Sierra Nevada and coastal ranges, this tree can reach heights of up to 50 feet with a spread of 30 feet. Blue oak is characterized by its blue-green foliage and distinctive gray bark.

Blue oak thrives in well-drained, rocky soils in full sun exposure. This tree is ideal for mediterranean climates with hot, dry summers and mild, wet winters. Once established, blue oak requires minimal water, making it a low-maintenance addition to any garden. It is often used in native and xeriscape landscapes for its drought tolerance and attractive appearance.

In addition to its ornamental value, Quercus douglasii provides habitat and food for local wildlife, making it a valuable addition to any garden ecosystem. Consider planting blue oak in your summer-dry climate garden to add a touch of natural beauty while conserving water and supporting local biodiversity.