California ash (Fraxinus dipetala)

California ash

Also known as: Two-petal ash

California ash is a deciduous shrub or small tree characterized by its two-winged samaras and fragrant clusters of small white flowers. It grows with multiple stems and exhibits a spreading habit, often found in woodlands and slopes where it thrives in the dappling sunlight. The compound leaves turn yellow in fall, adding seasonal interest to its native habitats.

Scientific classification

Species

California ash (Fraxinus dipetala)

Mints plantains olives and allies

Instantly identify plants with a snap

Snap a photo for instant plant ID, gaining quick insights on disease prevention, treatment, toxicity, care, uses, and symbolism, etc.

Download the App for Free

Tree

Plant Type

10 - 35 ℃

Ideal Temperature

Images of California ash

Care Guide for California ash

Every week

Water

Full sun

Sunlight

10 - 35 ℃

Ideal Temperature

Water: Water california ash daily after planting to promote root growth, then weekly once established. Increase watering in dry, vigorous summer conditions. Water once before winter freeze and cease thereafter. Avoid overwatering to prevent soil waterlogging and root rot.

Fertilize: California ash thrives in infertile soil, but requires nutrients for optimal growth and pest resistance. Use a 10:10:10 slow-release fertilizer once each fall, ensuring adequate watering. Fertilize new spring plantings in late summer, and fall plantings the following spring to avoid root burn.

Pruning: California ash thrives with early spring pruning, removing dead or crossing branches to improve health and shape. Prioritize thin stems for better air circulation. This practice promotes vigorous growth, flowering, and pest resistance. Use clean, sharp tools, and seek local advice for optimal results.

Propagation: California ash trees can be propagated by seed or cuttings. For cuttings, take 15 cm branches with 3-4 buds in spring/summer and root them in moist sandy soil. Sowing is complex; if attempted, plant seeds 1.3 cm deep in spring, refrigerate for three months, then germinate at 21-24°C, keeping soil moist.

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App for Free

Learn More About California ash

Plant disease auto-diagnose & prevention

AI-powered plant doctor helps you diagnose plant problems in seconds.

Download the App for Free