Juglans californica
California Walnut
Description
Juglans californica can be either a large shrub with 1-5 trunks, or a small, single-trunked tree. The main trunk can fork close to the ground, making it look like two trees that have grown together, then diverged. It has thick bark, deeply channeled or furrowed at maturity. It has large, pinnately compound leaves with 11-19 lanceolate leaflets with toothed margins and no hair in the vein angles. It has a small hard nut in a shallowly grooved, thick shell that is difficult to remove.
Plant Type
Tree
Height Range
40-60'
Flower Color
n/a
Flower Season
n/a
Leaf Color
Green
Bark Color
n/a
Fruit Color
Black, Brown
Fruit Season
Fall
Sun
Full
Water
Medium
Growth Rate
Moderate
Soil Type
Sandy, Clay, Loam, Rocky, Unparticular
Soil Condition
Average, Rich, Well-drained, Moist
Soil pH
Acid, Neutral
Adverse Factors
Invasive, Messy
Design Styles
Woodland
Accenting Features
n/a
Seasonal Interest
n/a
Location Uses
Background, Lawn, Park
Special Uses
Shade Tree
Attracts Wildlife
Wildlife
Check your irrigation controller once a month, and adjust as necessary.
Most plants require only one-third as much water in winter as they do in summer.