Presentation Title

D Avenue Green Street Project: Methods for Incorporating Large Trees, Pollinator Habitat, and a Native-Dominant Landscapes into an Urban Neighborhood

Start Date

2-3-2020 3:30 PM

End Date

2-3-2020 3:40 PM

Abstract

The D Ave project incorporated more than 40 rain garden facilities within an urban neighborhood where the community is highly involved in development and aesthetics are a major priority. Kate Forester was the lead landscape architect for this project and was part of an extensive community involvement process as well as worked closely with the City maintenance lead.

The project prioritized the preservation of existing large trees, but also meandered the roadway in order to create bigger rain garden and planting areas that would allow large enough soil volumes for the addition of more native conifers within the urban right-of-way. The project utilized tree root barriers at road edges and adjacent to infrastructure. We also used structural soils under walkways to prevent sidewalk heaving and provide additional access for tree roots to adjacent soils. In addition, the planting palette and design focused on maximizing native vegetation, including strategic pollinator species, while using the City's preferred non-native species for low-maintenance edges and aesthetic accents.

Climate adaptive planting strategies also included sourcing plants grown from seed and increasing species diversity within the planting corridor.

This project provides some design strategies for protecting existing trees, introducing large tree species back in to our urban right-of-way, and creating meaningful wildlife corridor opportunities with green street projects.

Subjects

Habitat restoration, Sustainable development, Water quality

Persistent Identifier

https://archives.pdx.edu/ds/psu/33841

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Mar 2nd, 3:30 PM Mar 2nd, 3:40 PM

D Avenue Green Street Project: Methods for Incorporating Large Trees, Pollinator Habitat, and a Native-Dominant Landscapes into an Urban Neighborhood

The D Ave project incorporated more than 40 rain garden facilities within an urban neighborhood where the community is highly involved in development and aesthetics are a major priority. Kate Forester was the lead landscape architect for this project and was part of an extensive community involvement process as well as worked closely with the City maintenance lead.

The project prioritized the preservation of existing large trees, but also meandered the roadway in order to create bigger rain garden and planting areas that would allow large enough soil volumes for the addition of more native conifers within the urban right-of-way. The project utilized tree root barriers at road edges and adjacent to infrastructure. We also used structural soils under walkways to prevent sidewalk heaving and provide additional access for tree roots to adjacent soils. In addition, the planting palette and design focused on maximizing native vegetation, including strategic pollinator species, while using the City's preferred non-native species for low-maintenance edges and aesthetic accents.

Climate adaptive planting strategies also included sourcing plants grown from seed and increasing species diversity within the planting corridor.

This project provides some design strategies for protecting existing trees, introducing large tree species back in to our urban right-of-way, and creating meaningful wildlife corridor opportunities with green street projects.