COMMON PROBLEMS OF
Spiraling Whitefly ***
Manganese deficiency (frizzle top):
Manganese (Mn) deficiency is most common in queen, royal and roebelenii palms, though
it can occur in many other palms. It manifests itself as deformed growth on the emerging
fronds. The new growth will appear stunted, crinkled and curled at the tips. Mn
deficiencies are more common in the western part of the county, but can show up anywhere.
If left untreated, the palm will eventually die. If caught soon enough, a Mn deficiency
can be corrected. Once the palm has recovered, our semi-annual maintenance program will
assure that the palm does not regress and become deficient again.
Magnesium (Mg) deficiency:
Magnesium (Mg) deficiency is common in many palms and sometimes shows up along with Mn
deficiency (frizzle top). Mg deficiency is not as serious a problem as Mn deficiency,
though it still should not be left untreated. Mg deficiency appears as a premature
yellowing of the fronds, especially the new fronds. It is normal in some palms to have the
lower growth to discolor slightly. This is a sign that the palms need to be trimmed.
Ganoderma butt rot:
Ganoderma butt rot is caused by the fungus Ganoderma zonatum. This organism causes a
gradual decline in palms. Unfortunately, there is no cure for Ganoderma. It is most
commonly a result of an injury to the trunk of the palm. After a palm is injured, the
Ganoderma fungus gets inside the palm and slowly kills the palm. A palm affected with
Ganoderma will slowly decline over a period of time. The fronds will be droopy and will
eventually hang limp. Eventually, usually two to three years after infection, an orange or
white mushroom-like growth will appear usually at the base of the palm. Ganoderma can
occur in any palm, but it is most commonly seen on areca and queen palms.
Decline due to depth of planting:
Palms are very sensitive to the depth at which they are planted. Planting as little as
two to three inches too deeply can result in a slow decline of the palm. If left
uncorrected, the palm will eventually die. It is usually a very slow process, sometimes
taking 2-3 years before the palm dies. When palms are planted too deeply, the root system
stays too wet. This usually leads to a fungal rot in the root ball. The palm will appear
sparse and thin on top. Mulching too deeply can also cause this decline.