Naturalization around stormwater management facilities contributes to, and aligns with, the updated landscaping standards that require naturalization for these areas, as well as the City Plan and A Greener Edmonton Plan, ensuring we have a healthy, climate-resilient city for future generations.
In these areas specifically, naturalization carries several important benefits including protecting banks from erosion and capturing rainwater, reducing stormwater runoff which will avoid overloading drainage systems and reducing the risk of flooding. These facilities are also important habitat for pollinators, birds and small animals.
Where possible, in locations not too steep or wet, the City mows a 1 metre wide buffer strip of grass between a naturalized area and a residential fence to discourage animals from crossing over into private property. Most smaller rodents rely on vegetation as cover to hide, and will stay within the taller grass in a naturalized area. Mowing this buffer also helps prevent tall grass or other plants in the naturalized area from moving into private property.
Naturalized tree and shrub species will be selected to align with City of Edmonton Landscape and Design Standards. Wetland indicators are used to assess the water requirements of potential plant selections, with stormwater management facilities often having more moisture in comparison to other sites. Therefore, plants with the ability to absorb water through extensive root systems will be planted more often. However, additional factors are taken into account, such as wildfire susceptibility, sightline concerns, wildlife habitat, soil quality, proximity to utilities, flood mitigation and other considerations. Conducting site visits and observing the existing vegetation in the area is used to determine what will be best to plant.
For more information: Naturalization
