The Rose Garden location is topographically located within a depression and is 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 is being designed to redirect and absorb stormwater runoff while providing water quality benefits. The existing stormwater infrastructure of drainage pipes and inlets is also being re-configured and expanded while avoiding impacts to existing garden features such as the fountain, arbor, and trees. The newly 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.
Some of the underground stormwater infrastructure improvements will be within the area of the rose beds. In advance of the construction, several of the existing rose beds will need to be removed to avoid damage to the roses. Parks, Recreation and Cultural Resources gardening and horticulture staff will be removing the roses prior to construction. These removals will be under the professional oversight of Witherspoon Rose Culture. Roses will be stored in an off-site protected area and re-installed into new and improved beds immediately after site construction is complete. The beds will be in the same configuration as the existing, historic garden layout.
Funding for this project is jointly provided by the Parks, Recreation and Cultural Resources Department and the Stormwater Management Department, Stormwater Quality Improvement Section.
Stormwater Management, Stormwater Quality Improvement Section, SEPI Engineering and Construction, Inc.