Quercus palustris ‘Pacific Brilliance™’ – Pacific Brilliance Pin Oak

Botanical Name: Quercus palustris ‘PWJR08’

Alternate Name: Swamp Spanish Oak

The Pacific Brilliance™ Pin Oak (Quercus palustris ‘PWJR08’) is a popular, medium sized deciduous tree with a useful narrow form and vibrant display of yellow, orange, and red fall color. It is a natural variety of Quercus palustris – the Pin Oak – that was discovered growing on Brentano’s tree farm in St. Paul, Oregon, by Joe Kelly and Pete Brentano. This tree is smaller than the species Pin Oak and grows to a height of 40-50 feet tall with a spread of 20-35 feet.

The canopy of the Pacific Brilliance Pin Oak forms an attractive, pyramidal form of upward sweeping branches. It is a useful tree to grow in urban settings where it can be planted as a street tree. It is also useful in narrow areas as its slim canopy easily fits into small landscapes, providing a vertical accent.

It develops inconspicuous catkins in the spring – both male and female on one tree. These bloom as the tree is leafing out. The leaves are large, mid-green, and glossy with deep lobes with a bristle on the tip.

The acorns grow up to ½  inch in size with very shallow cups. This oak tree doesn’t produce as many acorns as other Quercus species.

The Pacific Brilliance Pin Oak is very tolerant of wet soils and standing water. It is also very adaptable and tolerates urban pollution well. However, it is intolerant of alkaline soils, which can cause chlorosis of the leaves and damage to the tree.

Description

Height: 40-50 ft.
Width: 20-25 ft.
Shape: Pyramidal
Flower Color: Yellowish-Green
Flowering Time: April
Fall Color: Red, Orange, Yellow
Features: Beautiful shade tree, vertical accent, brilliant fall color
Exposure: Full Sun
Watering: Moderate/Heavy & Regular
Soil: Prefers moist to wet, acidic, loamy soils. Tolerates very wet soils and some flooding.
Growth Rate: Moderate-Fast
USDA Zones: 4-8
Uses: Lawn tree, shade tree, park tree, rain garden
Similar Trees: Shingle Oak (Quercus imbricaria), Scarlet Oak (Quercus coccinea), Northern Black Oak (Quercus velutina), Northern Red Oak (Quercus rubra), Northern Pin Oak (Quercus ellipsoidalis), Pin Oak (Quercus palustris)

Additional information

Shape

Pyramidal

Flower Color

Green, Yellow

Flowering Time

April

Fall Color

Orange, Red, Yellow

Growth Rate

Fast, Moderate

Uses

Lawn Tree, Park Tree, Rain Gardens, Shade Tree

USDA Zones

4, 5, 6, 7, 8

Mature Height

40'-50'

Mature Width

20'-30'

Exposure

Full Sun

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