Homes Businesses Industrial Water Conservation Energy Independence Act Power Hour Pay-It-Forward Home Energy Audits 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 Maximilian’s sunflower (Helianthus maximiliani) Plant type Flower Flower color Yellow Flower season Fall Plant size 8' H x 4' W Hardiness -30 degrees Light preference Full sun Winterizing instructions Cut to ground in spring Additional comments Tag number in xeriscape garden 15