Quercus tomentella
Island Oak
Description
Island Oak (Quercus tomentella) is a California native tree naturally found on the Channel Islands. This tree has more of an upright growth habit and can reach up to 50’ tall and 40’ wide. It can take a range of soil and watering conditions, so it can thrive with many different companion plantings. This is a tree that has a beautiful, regular shape, so it is a great selection for a focal point in medium-to-large gardens. As it grows, the lower branching can be pruned away to elevate the canopy and allow garden space underneath. Once it reaches a height requiring a ladder, a licensed arborist should be used for all future trimming. This tree should be planted at least six feet away from any hardscape areas, 30 feet from structures such as houses and buildings, and not near any powerlines. Shrubs and perennials should be planted about five feet away from this tree. It should be irrigated for about 45 minutes once a week when using most in-line drip irrigation systems.
Plant Type
Tree
Height Range
25-40', 40-60'
Flower Color
n/a
Flower Season
Spring
Leaf Color
Dark Green
Bark Color
n/a
Fruit Color
Brown
Fruit Season
Fall
Sun
Full
Water
Low, Medium, Extra in Summer
Growth Rate
Moderate
Soil Type
Clay, Loam, Rocky
Soil Condition
Average, Rich, Well-drained, Dry
Soil pH
Neutral
Adverse Factors
n/a
Design Styles
Mediterranean, Ranch, Seascape, Wild Garden, Woodland
Accenting Features
Specimen
Seasonal Interest
Spring, Fall
Location Uses
Background
Special Uses
Erosion Control
Attracts Wildlife
Wildlife
Mulching and adding compost to soil can minimize evaporation and help soil absorb and store water.