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Line 1: − The vegetation is a big opportunity to maximize the co-benefits of biodiversity and amenity. Planting plans can be formalized or naturalized to suit the surrounding style. In addition to aesthetic qualities, plants have specific functions in several LID practices. These include promotion of [[infiltration]], treatment of pollutants<ref> Hunt, W. F., Lord, B., Loh, B., & Sia, A. (2015). Plant Selection for Bioretention Systems and Stormwater Treatment Practices. Singapore: Springer Singapore. https://doi.org/10.1007/978-981-287-245-6</ref> and stabilization of soil. When selecting plants for an LID practice, aim for species with high functionality, survivability, suitability and availability. Landscape professionals should use these lists as guides, taking into consideration the appropriate planting zone, the size of the planting area versus size of the plant at maturity, tolerances to drought or periodic inundation, maintenance requirements and adaptability. + + − *To help you select appropriate plants for your site, we've developed tables to indicate the suitability for use in LID features (see page links under Plant Selection).+ + + + + + + + +
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[[File:Toronto Botanical Garden_Jen.jpg|thumb|Wonderful plants varying in form, texture and colour, TBG ON]]
[[File:Toronto Botanical Garden_Jen.jpg|thumb|Wonderful plants varying in form, texture and colour, TBG ON]]
Vegetation is a big opportunity to maximize the co-benefits of biodiversity and amenity in LID practices. Planting plans can be formalized or naturalized to suit the surrounding style. In addition to aesthetic qualities, plants have specific functions in several LID practices. These include promotion of [[infiltration]], treatment of pollutants<ref> Hunt, W. F., Lord, B., Loh, B., & Sia, A. (2015). Plant Selection for Bioretention Systems and Stormwater Treatment Practices. Singapore: Springer Singapore. https://doi.org/10.1007/978-981-287-245-6</ref> and stabilization of soil. When selecting plants for an LID practice, aim for species with high functionality, survivability, suitability and availability. Landscape professionals should use these lists as guides, taking into consideration the appropriate planting zone, the size of the planting area versus size of the plant at maturity, tolerances to drought or periodic inundation, maintenance requirements and adaptability.
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==Rain-Ready Landscapes==
Landscapes that use native plants; including trees, graminoids, shrubs/bushes, tall grasses and perennials to aid is both capturing and 'soaking up' rainwater can help reduce flood risk, build climate resilience, improve water quality and provide habitat for pollinators. There are 3 major types of 'rain-ready landscapes' to choose from when adopting the use of plants in LID practices:
#[[Rain Gardens]] - planted shallow depression with rainwater collected from roofs, rain barrel overflows/[[rainwater harvesting]] devices and allows water to drain into the surrounding ground within 24 hrs. Generally landscaped with a variety of suitable native plants, that can also benefit pollinator species.
#[[Soakaways]] - Gravel filled pit in this case to collect and transport water from a downspout or [[rainwater harvesting]] practice to fit lot-level properties and generally landscaped with river [[stone]], native plants and other decorative rocks or sod. Allows water to drain into the surrounding ground within 24 hrs.
#[[Bioswales]] & [[Bioretention]] - long trench with gently sloping sides that collects rainwater from impermeable surfaces generally parking lots, boulevards, right-of-ways, etc.) and drains water within 24 hrs. Generally [[Graminoids: List| tall grasses]] and long grasses are planted in the middle and along the bottom part of the [[swale]] to aid in reducing the velocity of water entering the practice and to help filter out pollutants.
#[[Stormwater Tree Trenches]] - linear [[tree]] planting structures that feature supported impermeable or [[Permeable pavements]] that promote healthy tree growth while also helping to manage runoff. They are often located behind the curb within the road right-of-way and consist of subsurface trenches filled with modular structures and growing medium, or structurally engineered soil medium, supporting overlying sidewalk pavement. Retains and filters out pollutants and [[salt]] from urban sites and then allows water to drain into the local municipal storm swear system after a major storm event to help reduce peak flow of water entering into the system and reduces the likelihood of an overwhelmed storm sewer or local surcharge.
To help you select appropriate plants for your site, we've developed tables to indicate the suitability for use in LID features (see page links under Plant Selection).
*For resilient and robust planting, native species which can tolerate periods of drought and periodic inundation are recommended.
*For resilient and robust planting, native species which can tolerate periods of drought and periodic inundation are recommended.
*Woody and evergreen plants should not be planted in any portions of the LID facility to be used for [[Winter|snow storage]] during winter months.
*Woody and evergreen plants should not be planted in any portions of the LID facility to be used for [[Winter|snow storage]] during winter months.