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Hydrilla (Hydrilla verticillata) is an exotic invasive species now
found throughout the Southern and Southeastern states
as well as California. Hydrilla grows into dense populations that can
choke out other native species and prohibit recreational uses.
Note: See also American
Elodea an
exotic submerged plant found in the Northern states
that looks similar.
Hydrilla > Averages three to five leafs per whorl with rough
toothed leaf edges.
Americana Elodea > Averages three leafs per whorl with smooth
leaf edges.
Q. What
are the best control options?
A. Herbicide Application:
Several products have shown to be effective on Hydrilla.
Our customer feedback extols the effectiveness
of Reward
liquid herbicide.
Additionally, the combination of Reward and Cutrine
Plus offers a synergistic winning combo. If a granular solution is
preferred then we recommend Hydrothol
191 Granular herbicide or Aquathol
Super K granular.
Cutting:
Hydrilla plant fragments can develop into new plants.
We do not recommend cutting.
Q. When is the best time to treat?
A. Once water temperatures are around sixty degrees or warmer and
the plant is viable.
Q. How do I actually apply the product(s)?
A. The Reward should be applied by a hand held or Solo
Back pack sprayers.
Granular herbicides can be spread by a small Hand
held spreader or can be tossed by a hand scoop.
Q. How often do I need to treat Hydrilla?
A. Hydrilla can grow quickly. Wait, watch and see after the initial
treatment but two applications are not unusual. Be aggressive with
this aggressive exotic plant.
Q. How long before I see results?
A. Generally within two weeks things will be cleared up.
Purchase
recommended products online:
- Reward liquid
- Cutrine
Plus
- Hydrothol
191 Granular
- Aquathol
Super K granular
- Solo
Back pack sprayers
- Hand
held spreader
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