Our Team

Cashel O’Sullivan

Certified as a horticulturist by the Brooklyn Botanic Garden, Cashel has over a decade of professional horticulture experience which ranges from rooftop gardens in NYC to gardens in Cambridge, Portland, and Boston. He uses a native inspired plant palette in communication with its surroundings to create gardens that tuck homes into landscapes. He enjoys creating gardens which are playful, resilient, and experimental.

Dr. Daria O’Sullivan

With a Bachelor’s degree in biology from Vassar College, Daria is fascinated by the processes underlying the natural world’s complex beauty. When she is not working as a psychiatry resident at MMC, she contributes to Opus a keen understanding of the science which underscores a gardens ability to function and thrive.