• Destroy vital plant tissues and functions
• Increase stress on weeds thereby reducing their competitive ability
• Reduce seed production

Successful biological control is generally achieved by using a variety of agents that attack different parts of the weed throughout its lifecycle.

Why Use Biological Control Over Other Control Methods?

Chemical and physical control measures can effectively reduce invasive plant infestations in many situations. However, these options can also be impractical, labour intensive, and costly. When infestations are large and dense or occur in sensitive habitats, biological control is often the only suitable option for long-term, effective control.

Is Biological Control the Right Option for Your Property?

Check the list below to see if the invasive plant problem on your land meets the criteria for a potential release site:

• Sizeable weed infestation, one acre or more;
• Will not be treated with herbicide;
• Soil disturbance, such as vehicular traffic or cultivation is minimal; and
• Agents are available for your target species

It will be necessary to have a weed specialist conduct a site visit to determine whether this option is suitable for your property and to identify if biological control agents are already present. Regular monitoring will be required to determine insect establishment and success.

For further information on biocontrol options, contact OASISS at 1-250-404-0115 or Oasiss@shaw.ca.

 Invasive Plants with Biocontrol in BC

https://www2.gov.bc.ca/gov/content/environment/plants-animals-ecosystems/invasive-species/management/plants/biological-control
MFLNRORD provides a list of invasive plant species in B.C. that have biocontrol agents.