Homes Businesses Industrial Water Conservation Energy Independence Act Power Hour Pay-It-Forward Home / Rebates / Water Conservation / Xeriscape / Xeriscape Plants / Xeriscape Plants Plants listed here are found in the Riverfront Park Demonstration Garden along the Apple Capital Loop Trail in Wenatchee. Numbers refer to plant identification markers in the garden. Click on photos to enlarge and for more plant details. Back Shrub Spirea (Spirea, varieties) Plant type Shrub Flower color Various Flower season Spring to Summer Plant size 36" H x 18" W Hardiness -10 degrees Light preference Full sun Winterizing instructions Prune out dead wood during dormant period. Additional comments : Prune summer-blooming spirea bushes during the winter or in the spring. Spring bloomers can be pruned right after the flowers are gone. Use spirea in a mixed or shrub border, as a groundcover, in a rock garden, or as hedging. Provides colorful fall foliage. Tag number in xeriscape garden 65