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Home
> Trees
> Species >
Palm Tree
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N S E C T S
Cabbage
Palm Caterpillar
Cabbage
palm caterpillars, found throughout Florida, target the cabbage
palmetto almost exclusively. They rarely kill palm trees but the
insects do destroy the trees' blossoms. They are a nuisance to
humans as well because they often enter homes looking for suitable
places to pupate. Control by insecticides is possible under certain
circumstance if carefully managed.
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Giant
Palm Borer
The
borer is a large and quite ugly beetle whose larvae have a taste for
the wood of the Washingtonia and Phoenix varieties. Borer grubs can
live inside a palm trunk for up to nine years before exiting as
beetles through quarter-sized holes.
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Palm
Budworm
The
budworm is beetle whose larvae feed on the flowers of a range of fan
palms. The caterpillars are about an inch long and a pinky-green in
colour.
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Palmetto
Weevil
The
Palmetto Weevil can be found throughout Florida, as far west as
southern Texas and as far north as South Carolina. It is North
America's largest weevil. This pest has a taste primarily for the
Cabbage Palm (sabal palmetto) although it will infest Saw Palmettos
(serrenoa repens) and, occasionally, Canary Island Date Palms
(phoenix canariensis), Washington Palms (washingtonia), Royal Palms
(roystonea), and some coconut palms.
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Royal
Palm Bug
The
Royal Palm Bug is an unusual insect. It feeds on only one plant, the
royal palm, and the female lays one egg a day during the spring, a
little like a chicken. The bugs rarely kill the host tree but the
damage they do can be unsightly and they are difficult to control
given the height of mature royal palms. These insects are the only
North American members of the Thaumastocoridae family.
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Thrips
North
America's thrips make up an extremely large family of insects. Of
the plant feeders alone, there are 264 species. And some of these
species have a taste for palm trees, feeding on flowers and leaves
by puncturing the surfaces to suck out sap. Thrips are not lethal to
palms but the feeding of the adults can discolor and wilt leaves. In
addition, in intensive infestations their unsightly black droppings
can become noticeable on leaf surfaces.
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I S E A S E S
Bud
Rot
Bud rot is caused by a fungus which causes the heart fronds
of a palm tree to wilt and die. Tree death can occur soon afterward.
California and Mexican palms are the most vulnerable.
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Fusarium
Wilt
Fusarium wilt is another palm tree fungus. Signs of wilt are
fronds wilting, losing their green luster and, finally, dying. Once
a tree is infected, there is no cure and the diseased tree may have
to be removed.
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Ganoderma
Butt Rot
Ganoderma butt rot is a relatively new and lethal disease of
Florida palm trees. It is caused by a fungus, Ganoderma zonatum,
which invades the base or butt of palm trees up to a height of three
to four feet above the ground. The disease was first discovered in Florida in 1994 and in only a few years it has spread to infect
palms throughout the state. At this time, it cannot be said with
certainty that there are any palm trees resistant to ganoderma butt
rot.
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Lethal
Yellowing
Lethal yellowing is a disease first noticed in the Caribbean
region of North America about 100 years ago. However, it was not
until the 1950s and a devastating outbreak in Jamaica and the
Florida Keys that the economic consequences of lethal yellowing were
recognized and intensive research begun.
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