The Rose Garden location is topographically located within a depression and subject to stormwater flooding and wet soils. Water issues affect the usability of the site and the health of the roses and other garden plants. To mitigate these concerns, a planted bioretention area has been designed to redirect and absorb stormwater runoff while providing water quality benefits. The planted bioretention area is designed to fit into the existing landscape and not deter from the beauty of the rose beds. Plants within the stormwater feature will be a mix of native, ornamental grasses and pollinator-friendly flowering perennials and low shrubs.
The project design also includes re-configuration and expansion to the existing stormwater infrastructure of drainage pipes and inlets. The design avoiding impacts to existing garden features such as the fountain, arbor, and trees.
Some of the underground stormwater infrastructure improvements will be within the rose bed area. In advance of the construction, several of the existing rose beds were removed in February 2020. Roses have been stored in an off-site area and maintained by Parks horticultural staff. Following construction, roses will be re-installed into new and improved beds matching the historic garden layout.
Funding for this project is jointly provided by the Parks, Recreation and Cultural Resources Department and the Stormwater Management Division, Stormwater Quality Improvement Section.
SEPI Engineering and Construction, Inc.