Whorl, a multi-participant interactive media art installation, is an immersive dive into a world of flowers, color, and play. As visitors enter the installation space their presence is acknowledged by a garden of animated flora projected onto three walls. Flowers grow, bloom, spin, and contract in relation to people's movements and locations. 3D modeled flowers are animated in TouchDesigner. The flowers respond to people's movements as detected via OpenPTrack, a new open source computer vision based person tracking system. In Whorl, body motion and play reveals one's spatial connection to networks of flora and their enigmatic behaviors.