Jasper is a small town in a national park. Landscaping choices should reflect the natural surroundings. Residents are encouraged to choose plants and trees from the Approved Planting List (PDF).
This list contains plant species that are both native to Jasper National Park and non-native. These recommended species are unlikely to become ecological problems by cross-pollinating with native plants or spreading into the natural environment. Preferred plant species are also drought resistant and do not attract wildlife such as bears or elk.
Alien weeds spread quickly and aggressively and they cause significant ecological damage by displacing native plant communities that stabilize the soil and provide food, shelter, and habitat for park wildlife.
There are over 120 species of non-native plants in Jasper National Park, mostly occurring in areas where people have the most impact: the Jasper town site. Of these, 10 weed species are the most aggressive and do the most damage.