The Imbe
The genus Garcinia
has a number of popular fruit trees including the mangosteen, which is
considered the finest fruit in the word. There are a lot of Garcinias
that are grown here in Florida, with fruit qualities ranging from very
acid to some that are quite sweet.
One favorite is the imbe, Garcinia livingstonei.
This slow-growing evergreen shrub from East Africa will reach a height
of about 15 feet and attain about the same width. It has tough leathery
four-to-six-inch leaves which are white-veined and quite attractive.
The
tree also has a unique growth habit, with most branches coming out at
right angles to the main stem, giving the tree an unusual form. Trees
grow slowly and this makes them ideal for pot culture; in fact, many
people grow imbe as a container tropical fruit for small landscapes.
Imbes
have separate sexes, so this means you have to have both a male and a
female tree for good fruit production. Isolated female trees sometimes
produce a few fruit, but they are quite small and for optimum
production it's always best to have a male tree or a male branch
grafted onto the female tree.
Trees flower in the late spring
and the fruit ripen quickly, often maturing in mid-to-late-June. Fruits
are about two inches across, bright orange in color with a thin skin
and usually two large seeds. A layer of orange pulp surrounds the seeds
and tastes somewhat like apricots.
Besides fresh eating the pulp makes an excellent jelly or jam and can be used for fruit leathers, milkshakes and ice cream. Trees
are easily propagated by seed, but because of the slow growth often are
less than a foot high even after one year's growth. It usually takes
five to six years to reach fruiting age. There are some varieties that
have smaller seeds and more edible pulp, but no named varieties or
selections are available at local nurseries. Superior varieties can be
grafted onto seedling rootstocks and this is the method most people use
to get earlier fruiting.
Trees grow best on acid soil, and on
alkaline soils may develop nutritional deficiencies, particularly in
zinc. Trees should be fertilized every three to four months with a
complete fruit tree fertilizer. If you have young trees or container
plants, these can be fertilized every other month to help speed their
slow growth.
Imbes are said to have good salt tolerance and can
be used fairly close to salt water; their tough leaves are also quite
wind resistant. Established trees are considered drought-tolerant, but
for optimum fruit production some irrigation may be necessary during
the spring dry season. Trees are cold hardy and mature trees can take
down to about 25°F without serious damage.
For best growth
and fruit production, keep trees where they get plenty of sunlight, and
even though they will tolerate light shade, heavy shade will reduce
fruit bearing.
There are few pests of diseases of imbe, however,
during the period of fruit ripening fruit flies may become a problem in
some years.
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