Resources
Information about invasive plant species is not always widely known, yet these species can significantly reduce the health and quality of your garden, backyard, or local greenspace. Below, you’ll find helpful tips and resources that can support you in protecting and improving the natural environments you enjoy!
Quick Link Guide
Weed Categories in SK | Report Invasive Species | Invasive Species Resources | Native Plant Resources
Weed Categories in Saskatchewan
Understanding how Saskatchewan classifies invasive and problematic plants helps determine how they should be managed. The Government of Saskatchewan uses three main categories: Prohibited, Noxious, and Nuisance.
Prohibited
These species are absent or extremely rare in Saskatchewan, but pose a serious threat if introduced. They have demonstrated aggressive, invasive behavior elsewhere. The goal is complete prevention, any suspected sightings must be reported immediately so they can be eradicated before establishing.
Reference: Government of Saskatchewan.
Noxious
These weeds are already established in parts of Saskatchewan and are beyond practical eradication, but they continue to spread into areas that are not yet infested. The enforcement goal is to stop or slow their spread through active management and monitoring.
Nuisance Weeds
Nuisance weeds are common and widespread across Saskatchewan. Although they may include some native species, they can still create problems for agriculture and land management due to their ability to spread quickly. The enforcement goal is to reduce infestations to a level consistent with surrounding areas using integrated management practices.
Report Invasive Species
Report an Invasive on iNaturalist
Spot an unknown plant, or looking to report an invasive species in Saskatoon or in the province? Submit your observation to iNaturalist!
How to submit an observation:
- Visit iNaturalist.org and create a free account or download the app.
- Upload clear photos, add the location, and include any notes about habitat or abundance.
- Observations are verified by other users and used by organizations like the Saskatchewan Conservation Data Centre to understand species distributions.
Report an Invasive to the City of Saskatoon
If you spot an invasive species in Saskatoon, you can report it through the City’s bylaw system.
How to report:
- Go to the City of Saskatoon’s Bylaw Concern Reporting Form.
- Choose “Property Maintenance” to report invasive or regulated weeds on private property or within a natural area in Saskatoon.
Invasive Species Resources
Saskatchewan Invasive Species Council
The SISC is a province‑wide non‑profit that unites experts from government, industry, and environmental groups to coordinate invasive species prevention, early detection, and public awareness in Saskatchewan.
Their website also provides easy‑to‑use fact sheets on invasive species found across the province.
Native Plant Resources
Links for Local Native Seed & Plant Producers