Garden Scheme
Plant library · Palms & Tropicals
Washingtonia robusta
Mexican Fan Palm is a fast-growing, single-trunk palm for large-scale planting in warm landscapes. Its slender form rises to about 70 feet while occupying a comparatively narrow 12-foot spread, creating a strong vertical accent rather than broad shade. Use it where its height can read clearly from a distance and where the crown will not crowd lower roofs, small patios, or compact planting beds.
Space Mexican Fan Palm 12 ft apart, measured center to center (3.7 m).
The mature spread is about 12 ft (3.7 m), so neighboring plants just meet at maturity without crowding.
Treat 12 ft as a planning baseline — cultivar and local growing conditions shift the final footprint.
Place Washingtonia robusta as a specimen, in a spacious lawn panel, or in a bold line along a broad drive or property edge. Keep the trunk outside tight pedestrian zones: the canopy is held high as the palm matures, but young plants can retain old fronds around the trunk and the leaf stalks are spiny. Reserve an open approach for pruning, cleanup, and viewing the full height without forcing access through neighboring planting.[1][2]
Set palms 12 feet apart, center to center, when repeating them in a row or grove. That interval matches the mature 12-foot width, so crowns can meet visually without being deliberately compressed. For a single specimen, treat the width as only the immediate crown zone: leave generous surrounding open space so the tall trunk does not overwhelm nearby beds, seating areas, or structures as it develops.
Give this palm full sun and a well-drained planting position. Its low-water profile suits an arid-looking or low-irrigation design once established, but avoid sites that remain wet or poorly aerated after rain or irrigation. In a mixed border, place it at the back or beyond the bed rather than relying on it to share the same moisture conditions as plants that need consistently damp soil.[1]
Flowering falls from spring into summer, when the palm adds hanging clusters above the foliage. The evergreen crown keeps its vertical presence through the year, while older fronds may persist on younger trunks before eventually shedding as plants gain height. Allow room below the canopy for occasional frond drop and maintenance rather than filling the trunk base with hard-to-reach, permanent plantings.
This is not a small-garden palm. A 70-foot mature height calls for a site with clear vertical sightlines and enough setback that the palm will not dominate low buildings or narrow outdoor rooms. It is suited to USDA Zones 9 through 11; leaf damage can occur around 20°F, so cold-prone pockets and exposed frost traps are poor long-term positions.[1][2]