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The Water Hyacinth. Eichhornia crassipes. Labeled one of the worst invasive plants in the world It is a member of the Pontederiaceae family A noxious species. Water Hyacinth. Characteristics. Mat forming, floating plant Spongy, waxy and glossy leaves

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the water hyacinth

The Water Hyacinth

Eichhornia crassipes

water hyacinth
Labeled one of the worst invasive plants in the world

It is a member of the Pontederiaceae family

A noxious species

Water Hyacinth
characteristics
Characteristics
  • Mat forming, floating plant
  • Spongy, waxy and glossy leaves
  • Doubles its population in as little as 12 days
  • 95% water, has a fibrous tissue
  • Is similar to the native frog\'s-bit, Limnobium spongia
characteristics continued
Characteristics Continued…
  • Remove nutrients directly from water.
  • Reproduction includes
      • Sexual-- seeds
      • Asexual– over wintering stems and the creation of daughter plants
slide6

Often Confused with

Frog\'s-bit, Limnobium spongia

native of golf states

history
History
  • Native of South America
  • Introduced to Florida in the

early1880’s.

  • Became a popular plant for

gardens and domestic ponds.

slide8
Example of a large mat

Located in Milnerton, Cape

Town in South Africa

location habitat
Location/ Habitat
  • Wetland plant
  • Grows in rivers:
      • Ponds
      • lakes
      • costal fresh water bays
      • marshes
  • It is available in Pennsylvania for purchase from nurseries
  • They are problematic to the ponds and lakes of Pennsylvania
slide11
Uses
  • Has been used by waste treatment plants
  • It is a ornamental plant
  • Possible food source
      • high energy and protein content
impact
Impact
  • Damage
    • Disrupts commercial and recreational use of waterways
    • Much like algae their deaths lead to anoxic conditions
  • Future
    • Scientists are worried about the development of a cold resistant species
        • Likely because it reproduces sexually
impacted continued
Impacted Continued…
  • Has also invaded
      • Central America
      • North America
      • Africa
      • India
      • Asia
      • Australia
      • New Zealand
biota control
Biota Control
  • The use of herbicides is a common method of control
          • diquat
  • Other control methods involve the introduction of insects
      • They reduce to plant height and consume viable seeds
biota control continued
Biota Control Continued…

moth (Sameodes albiguttalis)

two weevil species of the Neochetina spp.

thanks to
Thanks to:
  • http://plants.ifas.ufl.edu/hyacin2.html
  • http://www.ecy.wa.gov/programs/wq/plants/weeds/aqua010.html
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