NC INVASIVE PLANT COUNCIL
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Hydrilla 

Hydrilla verticillata
This weed is found mostly in waterways in the Piedmont region of North Carolina. It reproduces itself usually by stem and root fragments which disperse through the water. It grows vigorously and forms mats along the surface. It degrades water and blocks waterways. 

It is an aquatic plant, found both submersed (as a vine) and on the surface (as a mat). It roots to the bottom and is free floating. Stems can reach as long as 25'.  Serrated leaves (0.2 - 0.8" long) grow in whorls of 3 to 8, along the stem. Along the reddish midrib of the leaf, on the underside, there are small spines.

Fact Sheet: Hydrilla
Research: Sarah Meadows, Rob Richardson, and Steve Hoyle - Phenology of Monoecious Hydrilla Over Three Years
Picture
Photo credit: Chris Evans, River to River CWMA, Bugwood.org

Hydrilla Hunt ID Card
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  • Home
  • About
    • Donate
    • Invasives 101
    • Membership
    • Board of Directors >
      • NC-IPC ByLaws
    • Contact
    • Listserve
  • News
    • Iverson Scholarship
    • Wildland Weeds Magazine
    • Calendar >
      • 2018 Workshop
  • NC Invasive Plants
    • Ailanthus Altissima (Tree-of-Heaven)
    • Elaeagnus umbellata (Autumn Olive)
    • Ficaria verna (Fig Buttercup)
    • Imperata cylindrica (Cogongrass)
    • Ligustrum sinense (Chinese Privet)
    • Ligustrum vulgare (Wild Privet)
    • Lonicera japonica (Japanese Honeysuckle)
    • Microstegium vimineum (Japanese Stilt Grass)
    • Nandina domestica
    • Nymphoides indica (water snowflake)
    • Paulownia tomentosa (Princess Tree)
    • Persicaria perfoliata (Mile-A-Minute Vine)
    • Pueraria montana (Kudzu)
    • Pyrus calleryana (Bradford Pear)
  • Annual Symposiums
    • 2022 Joint Symposium >
      • 2022 Speaker Presentations
    • 2021 Virtual Conference
    • 2019 Joint Symposium >
      • 2019 Presentations
    • 2018 Annual Symposium
    • 2017 Annual Symposium
    • 2016 Annual Symposium >
      • 2016 agenda
    • 2015 Annual Symposium >
      • 2015 Presentations
      • 2015 Agenda
  • Projects
    • Fig Buttercup Project
    • Eno River Hydrilla Project
    • Awareness Week
  • Awards
    • 2015 Student Competition Winners
    • 2015 EIA Award
    • 2014 EIA Award