How Cold Hardy Are Mediterranean Fan Palm Trees?- Mediterranean Fan Palm

How Cold Hardy Are Mediterranean Fan Palm Trees?

Chamaerops Humilis

Known as the most naturally occurring northern growing palm on the planet, the Mediterranean Fan palm or European Fan palm.

But, how cold hardy are Mediterranean Fan palm trees?

Mediterranean Fan palms are hardy to zone 8+ handling temperatures down to 10 degrees F.

If you are in zone 7, you can still grow these palms outdoors but occasional winter protection will be needed during deep freezes.

Mediterranean Fan palms are also very versatile and drought-tolerant making them a popular choice in cooler milder climates as well as deserts.

They are a smaller, more compact palm for folks who have limited room and want something with a moderate growth rate, a smaller crown, and more versatility when it comes to sunlight.

Let’s find out more about this awesome palm tree!

TL;DR

  • Species Information:
    • Native Regions: Southern Europe, Western Mediterranean, and Northern Africa.
    • Varieties: Green form (Southern Europe, Western Mediterranean) and Blue form (Northern Africa, Atlas Mountains).
    • Appearance: Clumping palm with 15-20 palmate leaflets, grows up to 20 feet tall.
  • Cold Hardiness:
    • Temperature Tolerance: Down to around 10°F, suitable for zone 8+; can survive high single digits in zone 7 with protection.
  • Growth and Maintenance:
    • Size: Maximum height of 20 feet, making it suitable for small spaces.
    • Growth Rate: Slow, ideal for group planting without rapid landscape takeover.
    • Soil Preference: Well-draining soil, performs well in dry and coastal climates.
    • Pest Resistance: Minimal issues, susceptible to spider mites and fungus gnats in poor drainage.
  • Drawbacks:
    • Thorns: Sharp thorns on petioles, requiring caution when handling.
    • Crown Rot: Risk in prolonged wet, cold conditions; best to plant undercover in such climates.
  • Versatility: Suitable for hot, dry, and cool, coastal climates; can be potted for patios and indoor use.
  • Recommendation: Ideal for limited space and landscape color contrast, with care needed for thorn handling and crown rot prevention.

What Is It?

Known by its species name Chamaerops Humilis, this palm is one of only two palms native to the European region (the other being the Phoenix Theophrasti) and the only species in the genus.

There are green and blue forms of the Chamaerops palm that are native to different regions.

The more common green form is native to Southern Europe and the Western Mediterranean including Spain, Portugal, western Italy, and southern areas of France.

The blue form Chamaerops Humilis, known as the Argentea (aka Cerifera) or the Blue Mediterranean Fan palm has been popping up more recently.

These particular Mediterranean Fan palms have a striking blue color to their fronds, are native to the Atlas Mountains of Northern Africa, and are found at higher elevations. 

They are a bit more slow-growing and are slightly more cold-hardy than the common green form.

Group of Chamaerops Humilis palms - Encinitas, CA

The Chamaerops Humilis looks similar and is closely related to the Trachycarpus genus, with a few exceptions.

Chamaerops are clumping palms and will grow “suckers” or offshoots near the main trunk which will create a nice multi-trunking palm after a while.

The suckers can be removed and propagated as an alternative to starting new palms from seed.

This can be quite the undertaking since great care is needed when separating.

All forms of the Chamaerops also have heavily armed petioles that are a deterrent for small animals, so strong gloves are recommended it handling these trees.

The crown holds approximately 15-20 small-sized palmate leaflets with the petioles getting up to 5 feet tall. 

The palm itself usually won’t get more than 20 feet in height once mature.

Where Will It Grow?

The Mediterranean Fan palm, in both green and blue forms, is a great choice for zone 8 and above, taking minimum temperatures down to around the 10F mark before showing any cold damage.

In some cases, they can take into the high single digits of zone 7 if in a more protected part of your yard such as an entryway near the house or the side of a south-facing structure.

They are quite drought tolerant and can be found growing in desert regions as well as cooler Mediterranean areas of Europe and the Western regions of the U.S. and Canada.

In the warmer, drier regions, such as the Southwest U.S. and the Middle East, regular watering will make them look their best as long as they have well-draining soil.

Who Are They For?

Mediterranean Fan palms framing entry doorway

Since Mediterranean Fan palms only get to approximately 20 feet in height at their tallest, they are a great choice if you are limited with space or would like to have something near a walking path or swimming pool that will not overtake the area.

They are also relatively slow-growing and will take many years to achieve their full height, so even if left in a grouping you won’t have to worry too much about them taking over your landscape in a short period. 

Their slow growth and small size even make them a great choice as a potted palm for patios and corridors.

For those looking for color variation, combining the green form and the blue form can create an interesting look that will add a cool-looking contrast with other common green form plantings in your landscape.

With their versatility for tolerating hot dry conditions as well as their hardiness for cool Mediterranean coastal climates, there are many areas where you can experiment with these palms.

They will also do okay in areas with high humidity, such as the southeast U.S. so give them a try if you live in places such as zone 8 areas of Texas, Louisiana, and northern Florida.

Any Drawbacks?

As mentioned before, the Mediterranean Fan is heavily armed with extremely sharp thorns, especially the Argentia, so be careful when handling these palms.

Even with gloves, I’ve managed to cut myself a couple of times just trying to grab some seeds.

Crown rot can also be a problem if exposed to long periods of constant overhead moisture, especially in cooler coastal regions.

Planting underneath larger trees or in entryways with an overhang in these wetter areas will help reduce any rot issues.

There are no serious pest issues with Chamaerops palms, but keep an eye out for some common soil pests such as spider mites and fungus gnats. 

These problems are usually minimized with well-draining soil such as cactus and succulent mix.  Mediterranean Fan palms also do best in these types of soils.

The Wrap Up

Grouping of Mediterranean Fan palms with suckers at the base.

Whether you live in the hot desert or the cool Mediterranean, the Chamaerops Humilis is a versatile choice for various regions.

Here are some previously mentioned key features of this palm:

  • Cold hardy to zone 8 and above.
  • Ideal for hot, dry, or cooler, coastal regions.
  • Smaller stature is ideal for limited space around pools and entryways.
  • Green and blue forms for adding color contrast and overall beauty to your landscape.
  • Heavily armed petioles.  Great care is needed when handling these palms!
  • Can be kept in a pot and brought indoors if needed.
  • Crown rot can develop in extreme periods of wet, cold conditions.

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