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 Thread leaf coreopsis (Coreopsis verticillata “Zagreb”) Plant type Flower Flower color Gold Flower season Spring to Summer Plant size 1' H x 1½' W Hardiness -20 degrees Light preference Full sun Winterizing instructions Clean up in spring Additional comments Attracts butterflies Tag number in xeriscape garden 18