California Ash, Fraxinus dipetala

Species

California Ash

Fraxinus dipetala

Fraxinus dipetala, commonly known as the California ash or two-petal ash, is a species of flowering plant in the olive family native to western North America. It typically grows as a large deciduous shrub or small tree, producing showy clusters of fragrant white flowers.

	Category	Details
	Plant Type	Perennial plant
	Duration to maturity	5 years to harvest
	Estimated Plant Lifespan	50 years lifespan
	Sun Requirements	6+ hours direct sunlight (Full Sun)
	Pollination	Method: Insect and wind Notes: Fragrant flowers attract various pollinators while pollen is also wind-dispersed.
	Watering Requirements	Method: Deep watering Frequency: Low to moderate Notes: Drought-tolerant once established, but benefits from occasional deep watering during extended dry periods.
	Humidity Requirements	Level: Low
	Care Instructions	Plant in well-draining soil in a location with full sun to partial shade. Prune minimally in late winter to shape the shrub or tree as desired.
	Temperature Range	Min: -15°C Max: 38°C
	Alternative Names	Chaparral Flowering Ash, Ornus dipetala, Petlomelia dipetala

Cultivars

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blueblossom

Ceanothus thyrsiflorus

Shares similar Mediterranean-type climate requirements and thrives in well-drained chaparral soils alongside Fraxinus dipetala.

Ash Whitefly

Feeds on the undersides of leaves, producing honeydew and causing leaf yellowing.

Steps:

- Collect mature seeds in the autumn.
- Subject the seeds to cold stratification for 60 to 90 days to break dormancy.
- Sow in a well-draining potting medium in spring and keep moist until germination.

Timber

Historically used for making small tools and handles due to the hard and flexible wood.

California Ash

Description

Cultivars

Companion Plants

Common Pests

Propagation Information

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