This is part five of this subject (read previous parts here) and is closely connected to my ongoing series on cracks on our properties and in our homes (click here to read them).
RUSSEL'S
GARDENING
HANDBOOK
I promised I would talk about four common trees that are sold commercially but should not be planted on a residential property unless you can plant them well away from your home or any other structure, including driveways, walkways, pools and spas, overhead utility lines (electric, telephone, cable), and buried utility lines (sewer and water supply).
Some music for your reading pleasure
"Sitting in the Palm Tree," ABBA, 1974
All of these trees have lateral or flat root systems, which means that the roots are very close to the surface, many times on the surface and visible. Our #4 culprit tree is the
Palm
I have to qualify this, though. There are many palms which are small, beautiful, and not problematic. The palms we're going to discuss are the Washingtonia and Phoenix species.
- Washingtonia species -- these are most of the commonly available palms that have fronds that look like fans

Personally, I think (prepare for an opinion) the Washingtonia palm is ugly, ugly, ugly, especially when it gets older because it is nothing but a telephone pole with some green stuff waaaaaaaaaaaaaaaaaaaaaaaaaaay up there at the top. For example, those palm trees in the picture above? Here's what they look like at the front door of the condos:

What a wonderful view to look out of one's living room window to see a telephone pole. I'm continually amazed at the people who complain to the utility companies about telephone poles ruining the views from their properties, and when I drive by I see a trillion palm trees. In fact, I can't find the telephone pole for the palm trees. Maybe they're mistaking the palm trees for telephone poles? LOL
- Phoenix species -- the date palms -- these are not where you get a date for Friday Night at the Movies, but rather the date that YOU eat. I emphasize YOU because I think (prepare for another opinion) the date is nasty, absolutely nasty. Give me some jalapeno nachos and a good margarita instead.

To give you an idea of the excellent root system that these two species have, think back to the tornadoes and hurricanes that ravage the Gulf Coast. Very often you'll see the tops of the palm trees ripped off but the tree still stuck in the ground. Part of that is related to the skinniness of the palm tree, and part is related to the root system.
All palms love water, but Washingtonia and Phoenix species have root systems that are very good at finding it. If I didn't know better, I think they have been taught what a sewer pipe looks like and that there are plenty of wonderful nutrients inside of it. They also seem to know exactly what a swimming pool is made of and that it is nothing but a big bowl of palm tree water.
When I was building and renovating properties in Texas and Southern California, I regularly found sewer pipes that literally had been crushed by palm roots yet the plumbing system showed no signs of stoppage inside the house because these trees are so adept at soaking up water and nutrients.
Unfortunately, I lost my palm tree/swimming pool collection of photos in the Great Computer Hard Drive Crash of August 2005 (aka GCHDC805), but I can tell you from my experience in building and renovating swimming pools that you don't want Washingtonia and Phoenix palm species anywhere near a swimming pool. It's not a question of if they will break through your pool, it's a question of when.
Most of the other palms are okay, but as with all trees, keep them as far away as possible from sewer systems, pools, foundations, roofs, driveways, and walkways.
Especially for Jane Grant, I approve of your queen palms and your pygmy date palms.
Here's a list of the most commonly available palm species:
- Areca -- commonly grown as a house plant
- Bactris
- Bismarckia
- Borassus
- Calamus
- Cocos -- the coconut palm
- Copernica -- where carnauba wax comes from for all you auto enthusiasts
- Corypha
- Elaeis -- the oil palms
- Euterpe -- cabbage heart palms
- Hyphaene
- Jubaea
- Latania
- Maurita
- Metroxylon -- sago palms
- Phoenix -- date palms
- Raphia
- Roystonea -- the royal palms common in Texas and Florida
- Sabal -- the palmetto palms
- Salacca
- Syagrus -- queen palm
- Trachycarpus
- Washingtonia -- fan palms
I'll be back soon with a wrap-up on trees.
Be sure to scroll down for titles and quick links to some of my other blog entries.
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Some of Russel's blog entries
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How about those ficus trees? Very intrusive root. Very damaging.