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Washingtonia x filibusta

The Story

Plant Bio

Washingtonia x filibusta is a robust, fast-growing palm featuring fan-shaped, deeply divided fronds and a tall, slender trunk, often cultivated for its striking silhouette and drought tolerance.

This hybrid combines the hardiness of Washingtonia robusta with the ornamental appeal of Washingtonia filifera, making it a popular choice for large-scale landscapes and xeriscaping.

Uses & Benefits:

Provides a dramatic, tropical appearance with its towering, palm-like form, ideal for creating exotic landscapes.

Drought tolerant once established, reducing water needs.

Supports local biodiversity by offering habitat and shelter.

Essentials

At a Glance

Plant Type

Tree

Height

600 inches

Width

180 inches

Light

Full Sun

Zones

8, 9, 10

Water

Low to moderate once established

Humidity

Adaptable

Lifespan

Decades

Native To

Garden origin (parents from SW USA, Mexico)

Toxicity

Non-toxic

Bloom period

Late summer – Late fall

In flower about 4 months of the year

Planting

How to Grow

Select a sunny location with well-drained soil.
Plant in spring after the danger of frost has passed.
Water regularly during the first year to establish roots.
Mulch around the base to retain moisture and suppress weeds.
Prune dead or damaged fronds in late winter or early spring.
Fertilize annually with a balanced palm fertilizer.

Pro Tip

Ensure excellent drainage and avoid overwatering to prevent root rot.

Keep It Thriving

Care Guide

Do

Water deeply during dry periods 🌱
Prune dead fronds to maintain shape
Apply palm fertilizer annually

Don't

Avoid overwatering ❌
Don't place in poorly drained soil
Refrain from heavy pruning during the growing season

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Plant
Prune
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Tall, architectural silhouetteDrought-tolerant focal point

Companion Plants

Agave YuccaLavender Sedum

Multiply

Propagation Methods

Good to Know

Common Questions

Washingtonia x filibusta questions

What zones can Washingtonia x filibusta grow in?

Washingtonia x filibusta is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Washingtonia x filibusta deer resistant?

Not reliably. Deer may browse Washingtonia x filibusta, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Washingtonia x filibusta bloom?

Washingtonia x filibusta typically blooms in late summer through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Washingtonia x filibusta need full sun?

Washingtonia x filibusta does best in full sun (6+ hours).

Is Washingtonia x filibusta drought tolerant?

Yes — once established (usually after the first full season), Washingtonia x filibusta handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.