Holly oak, Holm oak

Quercus ilex


The Holly oak grows into a large evergreen tree with a dense canopy habit, 30-60 ft. tall and as wide. Leathery leaves are dull green above, white below, and have intermittent spines on the margins. Pointed acorns are round, 1 in. long with the base often covering half the nut. Young trees develop an upright habit for the first 15-20 years before broadening into a rounded shape as they mature.

Holly oak comes from the Mediterranean region of Europe, including the western Himalayas where heat, cold and seasonal drought are common. It is a highly adaptable species that has been widely planted across the Inland Empire along streets, in parks and in residential landscapes . It shows good tolerance to heat and aridity like our native oaks, but has a greater tolerance for summer irrigation. Many trees have been planted in lawns and gardens for deep summertime shade.

Plant Type: Tree
Foliage Character: Evergreen
Habit: Upright, Multi-trunk, Low-branching, Dense
Growth Rate: Moderate
Foliage Color: Medium green
Flower Color: Insignificant
Flower Season: Spring
Soil Adaptations: Well-draining soil, Rocky soil, Deep soil, Calcareous soil, Acidic soil
Exposure Adaptations: Frost, Drought, Aridity, All day sun, Heat
Function: Shade Tree, Screening, Residential spaces, Attracts butterflies, Parks and open space, Foliage accent plant, Commercial spaces, Civic spaces, Background plant, Wildlife value, Specimen
Height: 30 ft. – 60 ft.
Width: 30 ft. – 60 ft.

Set your preferred view

Choose between a list or map view of all signs found in our waterwise garden and park.

Welcome to the Waterwise Garden Digital Tour

This is a digital registry created to offer further information on the physical signs in our waterwise garden and park premises.

Would you like a few tips on how to use this tool?

Move around

Travel to different sections of our garden and park premises by using the horizontal scrollbar at the top.

Locate your sign​

Using the map view, you can preview what each specific sign is about by tapping on the plus icon.

Refer back to these tips

You can view these tips at any time by tapping the Help link in the top left.