The married artists Helen and Newton Harrison helped pioneer ecological art. Pushing the boundaries of conceptual art, they frequently collaborated with scientists when conceiving their ideas. The duo’s work has been shown in Tokyo, London, Buenos Aires, and Basel, and many of their large-scale projects were completed in various iterations, such as the “Lagoon Cycle,” a mural ultimately created from 50 parts. In 2018, Helen died; Newton followed in 2022. The Whitney Museum now presents the Harrisons’ indoor citrus grove: 18 citrus trees, each with its own lighting and planting system, positioned in a gallery on the eighth floor. While this exhibition may be out of the ordinary for the museum, it’s a vibrant reminder of the couple’s lasting impact. —Zack Hauptman