Lovely but dangerous, the yellow flag iris is classified as a noxious weed that out-competes native plants that can provide better access to the shore, provide better habitat and produce valuable nesting materials. (Photo contributed)

Invasive iris gets the chop from McGuire Lake

Group replaces invasive species with native cattails grown from seed by local volunteer

  • Jul. 19, 2018 4:40 p.m.

Iris out, cattails in.

Removing invasive yellow flag iris and planting native cattails in its place is the way the Columbia Shuswap Invasive Species Society (CSISS) has been working to protect the wetland habitat in Salmon Arm’s McGuire Lake Park.

In mid June, the CSISS summer staff began the removal of a 20 metre-squared infestation of yellow flag iris in the north-east corner of McGuire Lake.

Yellow flag iris may be beautiful but it is a noxious weed, notorious for out-competing native wetland plants thereby reducing habitat, forage, and nesting materials for birds and turtles that live in the lake and on the shoreline.

Related: White Lake targets invasive weed

Two weeks after removal, CSISS staff returned to restore the area with native cattails that were grown from seed by Salmon Arm volunteer Keith Cox.

Native cattails are preferred by wetland fauna as they allow for easy access to the shore, provide coverage and protection, and produce valuable nesting materials.

The removal of yellow flag iris from McGuire Lake is part of an overall plan to prevent the spread of the noxious weed as the seeds and rhizomes can float down stream and create new infestations.

Prevention, early detection, and rapid response are crucial for the control of this invasive species.

Related: Three groups pull together

For more information, go to or contact Columbia Shuswap Invasive Species Society at, or 1-855-785-9333.

The society is a non-profit organization dedicated to the prevention, management and reduction of invasive species in the Columbia Shuswap Regional District.

CSISS is appreciative of the generous support of the Columbia Basin Trust, the Columbia Shuswap Regional District, the Ministry of Forests, Lands and Natural Resource Operations and Rural Development, and the Ministry of Transportation and Infrastructure.

To learn more about invasive species in the Columbia Shuswap region go to


Like us on Facebook and follow us on Twitter

Just Posted

Sicamous welcomes new doctor

Dr. Carol Connick opened her practice on June 18

Girl, 10, poisoned by carbon monoxide at Shuswap campsite could soon return home

Lucille Beaurain died and daughter Micaela Walton, 10, was rushed to B.C. Children’s Hospital on May 18

Chase RCMP find drugs, fake money and sawed-off shotgun at traffic stop

Two separate incidents in recent weeks result in drug-related arrests.

Beekeepers from Argentina find sweet success in Shuswap

Honey Onyx Apiary is hoping to increase its operations by 200 hives this year

Unexpected snow on Okanagan Connector, Pennask Summit

As of 6:50 a.m. DriveBC cameras displayed surprise snowfall on highway

VIDEO: ‘Avengers: Endgame’ to be re-released with new footage

‘Avatar’ holds global box office record at $2.788 billion, while ‘Endgame’ stands at $2.743 billion…

B.C. teen killed by falling tree near Victoria

Second youth also injured in freak incident during field trip at Camp Barnard near Sooke

South Okanagan mountain resort sees lengthy snowfall

Snow stayed on the ground for four, says resort manager

Elias Pettersson wins Calder Trophy as NHL’s top rookie

Vancouver forward first Canuck to win award since Pavel Bure in 1992

FVRD chair calls B.C. incineration plan for Philippines waste ‘disturbing’

Metro Vancouver ‘uniquely capable’ of safely disposing of waste coming back to Canada, say officials

VIDEO: Acknowledging skeptics, finance minister vows to build Trans Mountain project

Bill Morneau said he recognizes ‘huge amount of anxiety’ in Calgary over future of oil and gas sector

Shovels could be in the ground on Trans Mountain by September, CEO says

Ian Anderson points to weeks likely required for NEB to reinstate 2016 regulatory record

Interior forestry workers ratify five-year contract

It was approved by United Steelworkers Local 1-417, which represents workers in Kamloops, Kelowna

Scorpion gives birth after hitching ride in B.C. woman’s luggage

A Vancouver woman inadvertently brought the animal home from a trip to Cuba

Most Read