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The time required for the chemical to dissipate by half ranges from days to a few weeks, depending on soil and climatic conditions.
In March, the SSISC announced a pilot program that provided a rebate of up to half the cost of removing two particularly troublesome species, or between $500 to $1,000, depending on the size of the property and sensitivity of the location. The deadline passed in June.
Swerhun said they had been working with homeowners throughout Sea to Sky.
"We have about 16 homeowners involved in the program, equally shared by dealing with outbreaks of hogweed in Britannia Beach and Japanese knotweed throughout the region," she said.
In one case in Pemberton, the SSISC was helping a homeowner whose Japanese knotweed problem had moved a septic tank, Swerhun said.
"This round of funding is finished but if anyone is interested we can get them on a waitlist to show our funders there is a need to continue the program," she added.
The SSISC can respond to questions at email@example.com.
The organization has also just completed the second year of its Invasive-free Certification program for the horticulture industry, the first of its kind in B.C.
The program grew out of a horticulture forum hosted by the SSISC in November of 2010, where the feedback from the industry was that there is a lack of education on invasive species and their significant threats. The goal of the program is to integrate targeted invasive species management into the practices of horticulture and landscape companies serving the Sea to Sky corridor, and recognize those companies that are making a difference. Training was provided to participating companies on species recognition and procurement practices, site and species control methods and disposal practices.
The program this year involved over 60 participants representing 15 different companies.
"The SSISC salutes the companies that have volunteered to take part in the program," said Swerhun, adding a big thank-you to the Community Foundation of Whistler for funding.
Meanwhile, the Ministry of Forests, Lands and Natural Resource Operations and the Invasive Species Council of B.C. have announced they will collaborate on a five-year plan to tackle invasive species through the province.
"The provincial government recognizes the potential dangers posed by invasive plant and animal species, and this strategy provides a comprehensive approach for dealing effectively with those threats," said minister Steve Thomson recently. "We appreciate the contributions made by all of the agencies and individuals involved in this project."
Invasive species are any species of plant or animal that is not native to the province. Some of the species are innocuous, while others can push out native species and alter habitats. In some cases they can harm infrastructure and people. The Japanese Knotweed, as noted, can choke rivers, crack pavement and ruin the foundations of buildings, while the giant hogweed extrudes a sap that, when exposed to UV light, burns skin and in rare cases can cause blindness.