

A.
There are several varieties of palm trees that thrive in our neo-tropical
climate. It is important to note that in Zone 9 the average annual minimum
temperature is between 20 and 30 degrees Fahrenheit. For this reason,
consideration should be given to the cold tolerance of a palm tree. Most
of the new commercial and entertainment developments in Galveston County are
incorporating large numbers of palm trees in their landscapes. However, a
new resident to the area could easily make a mistake by duplicating some of the
palm trees that are being commercially installed. Local nurseries and
garden centers are stocking lush, exotic species seen in pamphlets of tropical
resort destinations, many of which are wholly inappropriate for our
climate. A general rule for hardy palm selection is: palms with the bluest
foliage are the most cold tolerant. This is due to a waxy coating on the
fronds.
The Sabal texana is
one of the hardiest choices. Native to Zone 9, the Texas Sabal is a very
cold tolerant, slow growing palm. It is characterized by its broad,
cross-hatched trunk and slightly curved fan shaped fronds. Sabal minor, or
Palmetto palm, is the hardiest species in the genus. This palm rarely
forms an above ground stem and remains very short. It is more commonly
used as a large shrub. The versatility of Sabal palms is in their ability
to adapt to boggy soil conditions. The Palmetto palm even does well in
shady, low light areas. The historic Kemper House in Galveston has many mature
examples of both of these palms.
The Sabal palmetto
is also known as the Cabbage or Florida Palm. It is reported to be the
most widely planted Sabal species in the U.S. Although it is well suited
for our winter climate, it's towering height and narrow ringed trunk gives it a
giant toothpick-like appearance within a small residential setting.
Interestingly, this palm transplants better as a mature tree than a smaller one.
Fine specimens of this palm line the esplanade into South Shore Harbor Marina.
The Washingtonia is
commonly known in these parts as the Mexican fan palm. A fast grower, this
palm is beautiful at any height which makes it an easy landscaping choice.
This tree is distinguished by its bright green fronds and thin brown
cross-hatched bark. The bark eventually falls away to reveal a smooth
ringed trunk. The Washingtonia does well in our clay soil.
Significant numbers of these palms have been planted along State Highway 146
heading North into Kemah.
For a more
feather-like appearance, Butia capitata or Pindo palm, is an excellent choice
for the upper Texas coast. Its graceful blue-green fronds arch
dramatically from its trunk to nearly sweeping the ground. This palm is
also a slow grower and maintains a lush compact shape for many years.
Although it can reach 25 feet in height, most remain shorter. A beautiful
example of the Pindo palm is next to Larry's Shoes in the Baybrook Commons
Shopping Center.
The Phoenix
canariensis and Phoenix dactylifera are two additional choices for Zone 9.
Commonly referred to as Canary Island date palm and Phoenix date palm,
respectively, both specimens are quite large at maturity. The Canary
Island variety has a large pineapple shaped trunk which can measure several feet
in diameter. These palms can be seen along the banks of Clear Creek
Channel as it curves toward the Kemah bridge from Clear Lake. Phoenix date
palms make a dramatic statement at the entrances to South Shore Harbor on FM
2094.
Trachycarpus
fortunei is one of the hardiest palm varieties in the world. Mature
specimens can be found in Canada, Scotland and Ireland. Also known as
Windmill palms, this very distinctive variety is recognized by its hairy,
narrow, brown trunk. Windmill palms will do best in Zone 9 if they are
planted in a partially shaded location. The Baycliff Jack-in-the-Box on
the corner of FM 146 at FM 646 is landscaped with these palms.
The Chamaerops
humilis is a dramatic choice as a container plant or in a landscape bed.
Familiarly known as the Mediterranean fan palm, this variety commonly consists
of clusters of small trunks projecting out from one larger trunk. Its
small, compact shape make it easy to maintain. This palm winters well in
our area and does best in well drained soil.
Lastly, I am
including a selection that is not a palm at all, it is just confused with
one. Cycas revoluta is the scientific name for the hardiest species of the
Sago palm. The Sago is a member of the Cycad family which shares many of
the graceful, sweeping frond characteristic of palm trees. These exotic
plants with stiff, dark green fronds are complimented most when placed in a
landscape with palm trees of varying heights. A very large, old cluster of
Sago palms graces the entrance to the Moody Mansion in Galveston.

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