Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Arecaceae

Genus:

Washingtonia

Species:

Washingtonia filifera var. robusta

USDA Symbol:

WARO

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Tree

Height:

1800 cm

Light Requirements:

Full Sun

Drought Tolerance:

High

Bloom Months:

may,jun

Bloom Colors:

cream, white

Host Plant for Caterpillars

Garden & Ecology Notes

Wildlife Value:

birds, small mammals

Deer Resistant:

Yes

Salt Tolerant:

Yes

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Native palm groves historically experienced fire; trunk protected by persistent leaf bases and can resprout from crown after moderate fire.

Soil Requirements

Soil Type:

sandy, well-drained, nutrient-poor soil

pH:

6.0 - 7.5 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

Native to arid regions, prefers dry conditions

Propagation & Germination

Stratification:

None required

Germination Time:

14–60 days

Notes:

Seeds germinate best with warm temperatures (75-85°F) and consistent moisture. Fresh seed germinates more readily than stored seed.

The above propagation data sourced from Claude AI