CAPITAL REGION PRISM
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Aquatic Invasive Plants

The following is an incomplete list of aquatic invasive plants found in, or surrounding, the Capital Region PRISM. Click on the name to read individual species details courtesy of NYIS.

Species of Concern

Species of concern plants are species that have not established fully in the region, giving us a chance to stop these invaders in their tracks through eradication and rapid response efforts. If you believe you have identified one of these plants, please contact PRISM staff using the contact page and/or upload your observation to iMapInvasives. This list is reviewed by the Aquatics Committee on an annual basis, so check back to see updates on what has been seen around the PRISM in the past year.

Factsheets for each of these species are coming soon.
Tier 1 Species (Not yet in PRISM):
  • Cabomba caroliniana, Carolina fanwort
  • Ludwigia peploides, Floating primrose willow
  • Hydrilla verticillata, Hydrilla
  • Nasturtium microphyllum, Onerow yellowcress
  • Myriophyllum aquaticum, Parrot feather
  • Nelumbo nucifera, Sacred Lotus
  • Ludwigia hexapetala, Uruguayan Primrose Willow
  • Eichhornia crassipes, Water Hyacinth
  • Pistia stratiotes, Water Lettuce
  • Aldrovanda vesiculosa, Waterwheel plant
Tier 2 Species (Eradication in PRISM is feasible):
  • Egeria densa, Brazilian elodea
  • Hydrocharsis morsus-ranae, European frog-bit
  • Nitellopsis obtusa, Starry stonewort
  • Myriophyllum heterophyllum, Variable-leaf milfoil

Widespread Aquatic Invasive Plants

These widespread aquatic invasive species have become some of the most common plants in our region. These plants crowd out native species and are generally unpalatable to aquatic species, which increases their competitive advantage. PRISM staff are always available to teach identification workshops for these species.

Factsheets for each of these species are coming soon.
Tier 3 Species (Containment in PRISM):
  • Butomus umbellatus, Flowering rush
  • Nymphoides peltata, Yellow floating-heart
  • Nasturtium officinale, Watercress
Tier 4 Species (Local Control in PRISM):
  • Najas minor, Brittle naiad
  • Phragmites australis, Common reed
  • Potamogeton crispus, Curly-leaf pondweed
  • Myriophyllum spicatum, Eurasian watermilfoil
  • Lythrum salicaria, Purple loosestrife
  • Trapa natans, Water chestnut
  • Iris pseudacorus, Yellow iris
Hosted by Cornell Cooperative Extension. Website ©2018 Capital / Mohawk PRISM• Designed by Molly Pokrzywka

Our Funding

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​The New York State Department of Environmental Conservation provides financial support to the Capital Region PRISM via the Environmental Protection Fund. 
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​​Cornell Cooperative Extension Saratoga County
50 West High St.
Ballston Spa, NY  12020
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Get In Touch

Contact our Office: (518) 885-8995
Contact a Coordinator: Capitalregionprism@cornell.edu

Capital Region PRISM

​50 West High Street


Ballston Spa, NY 12020

To Join our ListServ, send an email to: 

cce-capitalprism-l-request@cornell.edu

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  • Home
  • Framework For Response
  • Species of Concern
  • Watercraft Inspection Steward Program
    • WISP Resources
  • RFP
    • NY Invasive Species Prioritization Map
    • RFP Questions and Answers
  • Events
  • About Us
    • Staff
    • Partners
    • Invasive Species Prevention Zones
  • Reports
  • Resources
    • Identification
    • Management
    • Restoration
    • Webinars and Videos
    • CR-PRISM Newsletter