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Mexican Blue Palm

Brahea armata

Mexican Blue Palm
Palms

A slow, sturdy fan palm with striking silver-blue fronds, native to rocky canyons of Baja California and Sonora. It uses little water, handles cold better than most palms, and its color stands out against desert-modern architecture.

Large
Full sunpreferred
Ask a designer about it
Mature sizeAbout 25′ tall, 12′ wide; taller over many decades
Growth rateVery slow, especially when young
Water useLow once established
SunFull sun
BloomCream plumes on long, arching stalks, summer
Cold hardinessAbout 15°F
FoliageStiff silver-blue fans with a coarse texture
ThornsSharp, stout spines along the frond stems

Living with it in the Phoenix Valley

Watering

Follow the tree schedule in our Landscape Care guide while it establishes. After that it needs only occasional deep watering, a little more in the hottest months. Good drainage matters; it dislikes soggy soil.

Pruning

Remove only dead fronds and spent flower stalks, and do it conservatively. Because it grows so slowly, an over-pruned palm takes years to recover. Wear gloves for the spiny stems.

Feeding

In very alkaline soils it can show yellowing that a palm fertilizer with magnesium helps correct.

Buying size

Its slow growth is a reason to start with a larger boxed specimen if you want presence right away.

How our designers use it

Color accent

The silver-blue fronds contrast with green plants, dark stone and white stucco, and glow under landscape lighting.

Desert-modern focal point

A single specimen or a staggered group gives a clean, architectural silhouette near an entry or pool.

Low-water oasis

It delivers a palm-oasis feel with far less water than tropical palms.

Good to know

Around the pool

Litter is low, but the frond stems carry stout spines, and the long flower stalks drop seed in fall. Keep it a few feet back from deck edges and walkways.

Pairs well with

Similar plants

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