Curly-leaf Pondweed found near Bozeman, Montana

Jul 13, 2010
In late June, curly-leaf pondweed (Potamogeton crispus), one of Montana's Priority 1 noxious weeds, was found in ponds along the East Gallatin River drainage system. (MSU photo by Jane Mangold, MSU Extension Invasive Plant Specialist)

(PhysOrg.com) -- In late June, curly-leaf pondweed (Potamogeton crispus), one of Montana's Priority 1 noxious weeds, was found near Bozeman in several ponds along the East Gallatin River drainage system. Priority 1 noxious weeds have limited presence in the state, and require eradication or containment where they are present, with prevention encouraged in areas not yet infested.

Melissa Graves, Plant Identification Diagnostician from Montana State University's Schutter Diagnostic Lab, gave a full description of the invasive aquatic plant that occurs in ponds, lakes, and slower moving streams or rivers.

"Curly-leaf pondweed prefers shallow water depths with a silty, high-nutrient bottom. It is distinguished from native pondweed species by its growth habit and distinctive leaf edges. Unlike native pondweeds, it actively grows in winter, with new emerging in spring. The leaves have wavy edges resembling lasagna noodles. They are about one to three inches long, narrow, reddish in color, and translucent, with flattened stems visible through the leaves."

Graves added that curly-leaf pondweed spreads by seed (rarely), by winter buds called turions, and vegetatively as small fragments of plant material attached to boats and other equipment. This invasive aquatic species was introduced to the United States in the late 1800's as an aquarium plant. It spreads easily and can quickly take over bodies of water.

Current distribution records indicate curly-leaf pondweed is present in Flathead, Lake, Lewis & Clark, Sanders, and Valley Counties. However, it may be more widely distributed across the state. Accurate distribution records will improve management of curly-leaf pondweed across the state.

"You can help to update distribution records for this plant by checking any pond, lake, or other water system (e.g. small stream, drainage or irrigation ditch) on your land for its presence," said MSU Extension Invasive Plant Specialist Jane Mangold. "If you think you've found curly-leaf pondweed, please take a sample to your local county Extension agent or weed coordinator."

Samples can also be sent directly to Melissa Graves, Plant Identification Diagnostician, Montana State University Schutter Diagnostic Lab, 119 Plant BioScience Building, Bozeman, Montana, 59717, for confirmation of identity.

Steps to follow to prevent the spread of aquatic invasive plants like curly-leaf pondweed include: thoroughly rinse any mud and debris from all equipment and wading gear and drain the water from your boat before leaving access areas; remove all plant fragments from the boat, propeller, and boat trailer; allow boats or equipment to dry at least five days before transporting them to new bodies of water; do not dispose of aquarium or water garden plants in other bodies of , seal plants in a plastic bag and place in the trash for disposal.

Explore further: Yurok Tribe to release condors in California

add to favorites email to friend print save as pdf

Related Stories

Can a drop of water cause sunburn or fire?

Jan 11, 2010

To the gardening world it may have always been considered a fact, but science has never proved the widely held belief that watering your garden in the midday sun can lead to burnt plants. Now a study into sunlit water droplets, ...

Plant gene for water efficiency found

Jul 11, 2005

ANU researchers have identified a gene that regulates the water efficiency of plants, the first to be discovered that mediates the process critical to plant survival, crop yield and vegetation dynamics. Dr Josette Masle, fro ...

Recommended for you

Yurok Tribe to release condors in California

2 hours ago

The Yurok Tribe has signed agreements with state and federal agencies that will lead to the first release of captive-bred condors into Northern California's Redwood Coast.

Genetic legacy of rare dwarf trees is widespread

2 hours ago

Researchers from Queen Mary University of London have found genetic evidence that one of Britain's native tree species, the dwarf birch found in the Scottish Highlands, was once common in England.

Invasive vines swallow up New York's natural areas

22 hours ago

(Phys.org) —When Antonio DiTommaso, a Cornell weed ecologist, first spotted pale swallow-wort in 2001, he was puzzled by it. Soon he noticed many Cornell old-field edges were overrun with the weedy vines. ...

Citizen scientists match research tool when counting sharks

Apr 23, 2014

Shark data collected by citizen scientists may be as reliable as data collected using automated tools, according to results published April 23, 2014, in the open access journal PLOS ONE by Gabriel Vianna from The University of Wes ...

User comments : 0

More news stories

Ocean microbes display remarkable genetic diversity

The smallest, most abundant marine microbe, Prochlorococcus, is a photosynthetic bacteria species essential to the marine ecosystem. An estimated billion billion billion of the single-cell creatures live i ...

Genetic legacy of rare dwarf trees is widespread

Researchers from Queen Mary University of London have found genetic evidence that one of Britain's native tree species, the dwarf birch found in the Scottish Highlands, was once common in England.

Genetic code of the deadly tsetse fly unraveled

Mining the genome of the disease-transmitting tsetse fly, researchers have revealed the genetic adaptions that allow it to have such unique biology and transmit disease to both humans and animals.

Cell resiliency surprises scientists

New research shows that cells are more resilient in taking care of their DNA than scientists originally thought. Even when missing critical components, cells can adapt and make copies of their DNA in an alternative ...

Google+ boss leaving the company

The executive credited with bringing the Google+ social network to life is leaving the Internet colossus after playing a key role there for nearly eight years.