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The difference between palm trees. Palm trees are in the Plantae Arecaceae family and will do great in warm and tropical areas of the U.S. They are drought tolerant once they become established. But, the cold hardiness varies among the thousands of types of palms. This post will basically describe the most common of Palm trees that grow in the south and southwest parts of the U.S.
Palm Tree Information
Most palm trees can grow in the lower elevations of the south and the southwest U.S. From Florida to the southern parts of California and of course Hawaii. The purpose of this post is to show the differences between palm trees mainly for landscaping purposes.
How long do palm trees live? Good question…about 80-maybe up to 100 years if conditions are right in the area it was planted. According to Wikipedia, there are over 2,600 palm tree species.
In colder regions of the southwest, it is best to leave the dried up fronds on the tree before trimming them off. These dried up fronds will act as a coat around the Palm tree during cold snaps. Remember to trim them off when the last hard freeze passes.
Palm trees are drought tolerant but best to provide them with plenty of water during the first 1-3 years after planting. For fertilizing use manganese or magnesium to help with growth and greenery. As an organic substitute use a bone meal fertilizer.
The Phoenix palm (Phoenix canariensis) – Also called the date palm. It will eventually grow to over 100 ft. tall and trunk will get 4-5ft. wide. They are the most recognizable palm tree in the U.S. today and are prevalent in the City of Phoenix. They produce beautiful tall arching fronds that will give shade. This palm is native to the Canary islands thus its other name “Canary Palm”. Like other palms, the trunk does resemble a large pineapple. The one thing they don’t like is consistent wet conditions. It will develop root rot if the root system does not get a chance to dry out.
The Phoenix Date palm (Phoenix dactylifera) It looks similar to the Phonenix Canariensis palm but will produce edible date fruit.
These palms are in the Pinnate family meaning its fronds are more feathery as opposed to a fan palm.
USDA Hardiness is zone 8-12.
A fan palm is a Palmate palm meaning a fan palm. Both do well in a rock landscape design.
The Mediterranean Palm – Chamaerops humilis. Also called the European fan palm. This palm is an excellent choice for the southwestern desert landscape. It tolerates cold temperatures down to about 10 degrees Fahrenheit however, a young newly planted the Mediterranean palm will have a hard time growing during its first 1-3 years with temps below 10°. The solution to keeping it alive when temperatures get cold is to use a cover for freeze protection. Almost anything will help including Plant thermal blankets.
California Fan Palm
The California fan palm (washingtonia filifera) is often mistaken for the Mexican fan palm and Vice a Versa. The biggest difference is the height and width of the palms. So, let us get this straight now. Mexican fan palms will grow up to 100 ft. tall and about 3-5 ft. wide. The photo above shows some large majestic California palm trees. The bottom dead foliage of the fronds is called “Palm Petticoats” and should be trimmed off before or during the spring seasons.
The photo above also shows the bark has been removed to give it a nice smooth trunk. The photo below is a California Palm before the bark has been removed.
The California fan palm will grow up to 50 ft. tall and about 7-8 ft. wide the main difference is the trunk size. The cold tolerance of this Palm tree is about 10° Fahrenheit. Any colder than that and they will have a tuff time coming back after initial planting.
Mexican Fan Palm
Mexican fan palm (Washingtonia robusta) will grow up to 100 ft. tall and only 3 maybe 4 ft. wide at the base. It is often confused with the California fam palm please see the photo above. This palm will tolerate freezing temperatures but only to about 20 maybe 15° Fahrenheit. It is native to northern Mexico and thrives in and around the Southwest in local city landscapes.
USDA zone 9-11 but can grow in zone 8 if you protect the tree during its first 2-3 after initial planting. Best to use thermal plant blanket when temperatures dip into the lower twenties during the winter months.
The Windmill fan palm
Windmill Palm Grows in USDA zones 8-11. A very good hardy fan palm tree with an attractive, compact crown and large, stiff stems, green foliage and distinctive hairy black fibers covering its slender, graceful trunk. A good looking palm that makes a tropical statement around the pool or small landscape and rock or xeriscape gardens. The windmill palm will grow up to 20ft. tall sometimes taller if conditions are just right. The width at the top including fronds will grow about 10-15 ft. wide.
Pindo Palm (Butia capitata) is a good cold-hardy palm it can tolerate temperatures down to 5° Fahrenheit that’s pretty cold for a palm tree. It’s one palm tree that can also be planted in partial shade, a very hardy tree for colder regions of the Southwest or South. This palm will grow up to 20 ft. tall Here is more information on the Pindo Palm.
Grows in USDA zones 8-11.
The Sago Palm plant is not a real palm it is a cross between a fern and a conifer. They are classified as cycads and It will have a hard time growing in regions where temperatures get below 20° Fahrenheit. It is a tropical palm tree and does well in containers for indoor decoration. The Sago Palm will grow in cooler regions outdoors providing you cover it during the first 2-3 after it has been planted. It is a slow grower eventually growing up to 8-10 ft. tall and about 4 ft. wide.
Most folks tend to overwater this plant it is best to let it dry completely before watering again. Be sure your container drains well, too much water on the root system and it will develop root rot. You can also place in areas where there is low light. If the older leaves turn yellow it is safe to trim off, however, if new growth is yellow this means there is an iron deficiency. Use iron or Ironite to keep leaves dark green.
USDA zones 9-11.
Do palm trees get insects? Yes, they do but mainly in the southern states like Florida, Louisiana, East Texas and places where there is lots of rain and humidity. Around the lower elevation of the southwest insects and diseases are not a big problem for palm trees. But, it does happen. Here is more information on Palm Insects and Diseases.
A date tree and a palm tree are two entirely different species.
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