Yellow Flag Iris PartyCLASS members were out on July 2, 2015 to wade waist-deep into Sweltzer Creek to deadhead yellow flag iris seed heads in an effort to curb the spread of this invasive water-loving plant. Sold as an ornamental plant at nurseries, the yellow flag iris can spread quickly, particularly along creeks, ditches and in ponds. It will eventually choke out native plants and restrict the flow of water. Since Sweltzer Creek is a salmon-spawning stream, it’s crucial to keep the creek flowing and clear.
The work team filled four garbage bags with seed heads, which were later burned at the local landfill. The Fraser Valley Invasive Plant Council and Cultus Lake Park Board plan on further eradication work in 2015 in Sweltzer Creek.
See more on invasive species at Fraser Valley Invasive Plant Council.