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PLANT
PEST CONTROL
Noxious Weeds In Hawaii
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 A noxious weed is defined by State
law as "...any plant species which is, or which may
likely to become, injurious, harmful, or deleterious to
the agricultural, horticultural, aquacultural, or
livestock industry of the State and to forest and
recreational areas and conservation districts of the
State, as determined and designated by the Department (of
Agriculture) from time to time."
Currently, 79
species of plants are designated as noxious weeds. Among
the more serious are gorse, banana poka, miconia and ivy gourd. All four weeds are a
threat to agriculture and the native forests. Miconia,
for example, now covers two-thirds of Tahiti following
its introduction in 1937. The same can happen in Hawaii.
Many weed
problems arise from the purposeful introduction of
plants. Due to Hawaii's year round balmy climate, many
plants that are not problematic in other areas can become
serious weed pests in Hawaii.
For common weed
problems in lawns and gardens, call the University of
Hawaii's Cooperative Extension Service at (808) 453-6055.
If you would like to know more about noxious weeds,
please contact the Hawaii Department of Agriculture Plant
Pest Control Branch.
Hawaii
Department of Agriculture
Plant Pest Control Branch
Chemical/Mechanical Section
1428 South King Street
Honolulu, HI 96814-2512
Phone: (808) 973-9530
E-mail: [email protected]
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