Heliosphere is a deployable soft-robotic enclosure that creates plant specific microclimates within conventional glasshouses. Conceived as an AI-enabled gardener, it translates local environmental data and plant needs into spatial and climatic responses. Using Kew’s Temperate House as a case study, the project addresses the limits of building wide climate control, which cannot meet every species’ requirements. It proposes a local, reversible intervention with minimal impact on the historic structure. The system develops from RC2 Soft Robotic Architecture’s research into lightweight, adaptive and pneumatic structures. Bending-active fibreglass rods, heat-sealed TPU chambers and a transparent PET membrane form a pressure-responsive enclosure. Changes in air pressure alter its height, curvature, openings and volume, regulating temperature, humidity and airflow around an individual plant instead of conditioning the entire glasshouse.