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 Sulfur buckwheat (Eriogonum umbellatum) Plant type Flower Flower color Yellow Flower season Spring to Summer Plant size 18" H x 24" W Hardiness -20 degrees Light preference Full sun Winterizing instructions No maintenance needed Additional comments Mix with other wildflowers for contrast Tag number in xeriscape garden 16