Umbellularia californica
Common name: California bay, headache tree
Family: Lauraceae
Leaf: pungent, medium green, narrow, pointed leaves, entire, lanceolate, 1-4" long. *Volatile oils present in the leaves may cause headaches and/or sneezing, and can also cause skin irritations
Flower: small, yellow-green flowers held in small umbels (hence the genus' name "Umbellularia"), blooming in late winter to early spring, flowers are hermaphrodite
Fruit: a berry, called "bay nuts", resembling an avocado, round, green, with leathery skin
Height: 30-82' tall; Spread: up to 32'
Habit: singled-trunked evergreen tree; Form: rounded
Culture: USDA hardiness zones 7-10, can grow in sun or shade, but best in shade however. Prefers well-drained soil. Tolerant of a wide variety of soils, but tends to do well in more organically rich soils that can retain moisture. Drought tolerant once established. Young plants require frost protection. Established trees can be hardy to about -15 degrees C.
Uses: As a hedge, at the base of slopes (enjoys added moisture in the growing season), screen, specimen, street tree, woodland garden
Origin, California, Oregon
Flower: small, yellow-green flowers held in small umbels (hence the genus' name "Umbellularia"), blooming in late winter to early spring, flowers are hermaphrodite
Fruit: a berry, called "bay nuts", resembling an avocado, round, green, with leathery skin
Height: 30-82' tall; Spread: up to 32'
Habit: singled-trunked evergreen tree; Form: rounded
Culture: USDA hardiness zones 7-10, can grow in sun or shade, but best in shade however. Prefers well-drained soil. Tolerant of a wide variety of soils, but tends to do well in more organically rich soils that can retain moisture. Drought tolerant once established. Young plants require frost protection. Established trees can be hardy to about -15 degrees C.
Uses: As a hedge, at the base of slopes (enjoys added moisture in the growing season), screen, specimen, street tree, woodland garden
Origin, California, Oregon
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| Umbellualaria californica, "bay nuts" (fruit) |
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