Florida White Grubs

This lovely little fellow is a
"white grub", the larva of
the June Beetle of the genus Phyllophaga,
of which there are over 100 different
species. Phyllophaga larvae and
other larvae of the family
Scarabaeidae are often referred to as
"white grubs".
Larvae of the Phyllophaga
are fat grubs which lie in C-shaped
positions. They are whitish in color
with dark areas at the rear and a
brownish head. The adults are beetles.

Life Cycle
The adults lay eggs in the soil.
Grubs live in the soil and feed on
roots of many different plants. White
grubs may be active in the soil
throughout the year, but different species take varying times
to complete their life cycle of 1 to 4
years. The adults do not feed on
grass.
Symptoms of Grub Damage Plants
affected by grub feeding may suddenly
wilt. Grubs can kill small plants and
gnaw cavities in root vegetables.
Species of white grubs that feed on
grass roots cause yellow patches in
lawns. In many cases you may be able
to lift back dead patches of your lawn
like a carpet where grubs have been
feeding. Heavy infestations of grubs
attract raccoons, skunks, armadillos,
opossums, crows, ibis, and other
birds, which make holes in the lawn
and garden to feed on the grubs.
Control of Grubs Unfortunately,
while control of grubs is essential to
the health of many plants in your yard
and garden, it is difficult to locate
and target an underground pest with a
pesticide, but early application
(early April through early May) of Bayer
Advanced Lawn™ Season-Long Grub
Control Ready-To-Spread Granules
is said to be effective (this is not
an endorsement by FG). In addition to
the natural predators mentioned above
beneficial nematodes are available to
help control grub populations. While
milky spore disease is also suggested
for grub control it is often labeled
only for use on grubs of Japanese
beetles.
Sources:
Florida Lawn Handbook,
American Horticultural Society Pests and Diseases |