| Palms in
the Desert? - Why Not!
It seems that gardeners in Tucson either love palms
or they hate them. For my part, I love them. They
add diversity and distinction to desert landscapes
and they certainly are a must for Mediterranean-style
gardens.
When choosing a type of palm for your
landscape, keep in mind it's ultimate size. Some,
like the Mexican Fan Palm and true Date Palm grow
too tall. They look great from a distance, but on
the typical urban property you'll need to lay prone
on a chase lounge looking up to enjoy them. Others,
like the California Fan Palm and Canary Island Date
grow too large. Their massive trunks and gigantic
leaves can fill the better part of a back yard.
The best palms for home landscapes are
those in keeping with the size of the property. Even
the smallest lots have room for a Mediterranean Fan
Palm or Windmill Palm.
The Mediterranean Fan is a small multi-stemmed
palm with deeply cut leaves that vary in color from
silver-green to olive-green. Although older specimens
can reach a height and spread of 15 feet, they are
slow-growing and typically less than 10 feet in size.
Mediterranean Fan thrives in full sun and are quite
drought tolerant. However, for best appearance, once
established, during hot weather they should be watered
twice-monthly.
Another excellent small palm is the
Windmill Palm. It's also a fan-leafed palm, with medium
to dark green leaves set on a single, straight trunk.
Leaves spiral out from the trunk in a windmill-fashion,
thus the name. Eventually, this palm will reach a
maximum height of 15 feet; but slowly. The "boots"
(leaf bases) cling on the Windmill Palm and are edged
with brown palm fiber adding to the attractiveness
of this palm. Although tolerant of full sun, it's
appearance is improved by growing in light to moderate
afternoon shade. Watering should be weekly during
hot months.
A medium-sized palm, but one still well
suited to the average size property is the Queen Palm.
This native of Brazil is the most exotic-looking of
the palms grown in Tucson.
It has a beautiful light-colored trunk and feathery,
dark-green leaves. Although Queen Palms can attain
heights of 50 feet, here in the desert they seldom
exceed 25 feet. Queen's prefer regular watering and
fertilization. Weekly irrigation is a must during
hot weather. Apply a palm fertilizer in mid-April,
and again in early July.
Another excellent import from Brazil,
under-used in my estimation, is Pindo Palm, sometimes
called Jelly Palm. Pindo has beautiful arching silver-green
leaves and an attractive trunk wrapped with outward
curving "boots" resembling a King's Crown.
Shrubby-looking when young, Pindo's grow slowly to
15 feet with an equal spread. Locate Pindos in full
sun. Water and fertilize as recommended with Queen
Palms.
Spring is the best time to plant these
palms as they establish best as the temperatures are
heating up. Choose a location that has good drainage.
Dig a planting hole considerably wider,
but no deeper than the root ball. Fill in the hole
with the soil you took out. Do not amend the backfill
soil. Organic amendments such as peat, manure, or
compost will interfere with the development of new
roots. All air pockets should be tamped out of the
backfill as the planting hole is filled. Form a rim
of soil around the planting hole to retain water during
irrigation.
The initial watering should be deep
and thorough. Filling the planting hole with water
up to the rim will be necessary 2-3 times to fully
wet and settle the soil. The rootball and surrounding
backfill should remain evenly moist, but never saturated,
during the first 4 to 6 months after planting.
Finally, it is important to apply a
thick layer of organic mulch over the soil using materials
such as ground wood mulch or compost. Pull the mulch
back slightly from the trunk. As this decomposes,
it enriches the soil while conserving moisture and
insulating the soil from extreme heat and cold. Be
sure to replenish the mulch as-needed.
Written
by John Begeman,
College of Agriculture and Life Sciences, the University
of Arizona,
520-626-5161. - March 24, 2002 |