National Wave Day was created by Wave® Gardening to honor the brand’s 30th anniversary in 2025, celebrating not only the enduring impact of the original spreading petunia, Wave® Purple Classic, but also the exciting future of Wave® and the beauty it continues to bring to outdoor spaces everywhere.
The National Day Calendar Registrar approved National Wave Day to be added to the calendar in 2026. Each year on May 3rd, we honor the beauty, resilience, and lasting impact of Wave® Petunias on National Wave Day.