Mariella Baldwin has a breadth of knowledge within the Visual Arts and was awarded her M.A. from the University of Sussex following her postgraduate studies at West Dean College, Chichester. Her passion, however, is the portrayal of plants. She studied Botanical Illustration under the tuition of Anne-Marie Evans at the English Gardening School in Chelsea Physic Garden, London. She went on to become a tutor of the subject, teaching at both the English Gardening School and West Dean College, as well as running workshops at numerous venues including The Wallace Collection, Sarah Raven’s Cutting Garden, the Museum of Garden History, the Eden Project, the National Trust, and for private groups. She has exhibited in both the United States of America and the United Kingdom and has paintings in private and public collections.

Her portrayal of plants and insects (dragonflies, bees, beetles, butterflies, moths, etc.) on leafed backgrounds gives these classic depictions a modern, contemporary feel, making them pop like little gems. The background colour changes according to the light, making them glow or become more subdued at night, softening their appearance.

She is a member of the Chelsea Physic Garden Florilegium Society, an organisation documenting the historic collection of plants within the garden. In 2016, Mariella's work was selected, along with that of five other artists, to be reproduced on a collection of summer clothing for Oasis in collaboration with Chelsea Physic Garden. One of the dresses appeared in an episode of Death in Paradise on BBC television.