G2 Collaborative is a small, creative, landscape architecture firm focused on the integration of environmentally smart technologies and meaningful, compelling design. Principals Lisa Giersbach and Gigi Saltonstall, bring together their shared interests in the power of the landscape to create community, vibrant social settings, and rich ecological environments. The firm’s work ranges from site design and master planning for mixed-use, institutional and residential projects, to urban design and planning.

Process is central to our work. We work closely with clients to understand program and project goals. We find inspiration through detailed and creative assessment of the project area and surrounding context including analysis of a site’s changing qualities, such as sun angle, seasons, wind, storm water patterns, plant associations, social uses, and site history. With an informed understanding of site come clear design strategies to create grounded,

functional, maintainable, and meaningful public and private spaces, regardless of project complexity and scale. Our design solutions not only emphasize the inherent qualities of site, but aspire to create spatial drama that adds to the generation of memorable and enduring places.

Using a collaborative approach and participatory engagement strategies, we strive to create inspiring and welcoming environments for all age ranges. Through discussions with the public, stakeholder groups, and our clients, we develop a better understanding of the site’s opportunities and challenges to be addressed through our work.

G2 Collaborative maintains a dynamic affiliation with a variety of distinguished architects, horticulturists, environmental consultants, and engineers and has a history of successfully addressing accessibility challenges and budgetary constraints. We are experienced in working with permitting and municipalities on many levels to deliver a project. As well, we have demonstrated a commitment to sustainable design. Both Principals are LEED Accredited Professionals and have successfully realized numerous innovative, sustainable and LEED certified projects.

In our practice, we strive to bring creative, individual solutions to each client, designing landscapes which create sense of place, purposefulness, and beauty.



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Lisa believes in the power of the landscape to build community, the beauty of landscape to shape experience, and the potential of the designed landscape to have profound effects on urban and ecological systems.  Beginning her career in the field of Studio Art and Art History, Lisa earned a Bachelor of Arts in Art History at Grinnell College in Iowa and worked in Museum Education at the Cloisters Museum in New York City. Working in art education in the sylvan setting of Fort Tyron Park, nestled in Upper Manhattan, she discovered the discipline of landscape architecture. Lisa went on to earn her Master of Landscape Architecture at Harvard’s Graduate School of Design. After 14 years in practice at Richard Burck Associates, Lisa founded G design studio in 2012 to continue pursuing her passion for creating spaces for people in the integration of art and ecology, and in 2014, Lisa and Gigi brought together their shared interests to establish G2 Collaborative. Passionate about design in general, Lisa’s mid-century home tucked into the woods is a palette for her many projects. She is also an animal-lover and an adventurer. Lisa can be found on ropes courses, hiking trails and kayaking all over New England, New York and New Jersey on any given weekend.


When Gigi was 10 years old, she watched her sister design and build a model house for a school project and knew immediately that she wanted to become an architect.  After growing up in Newton, MA, she attended Willams College where she received her BA in Art History.  She then traveled south to the University of Virginia School of Architecture where she earned a Master of Architecture degree followed by a Master of Landscape Architecture degree.  After over a decade of practice back in the Boston area working on a wide range of institutional and residential projects, Gigi started her own Landscape Architecture firm in 2012 before joining forces with G Design Studio to establish G2 Collaborative. Gigi operates out of the strong belief that successful spaces are created through careful and deliberate teamwork keeping careful aim at maintainable, sustainable, livable and, especially, beautiful places. In addition to that sort of fun, Gigi is a huge dog-lover, throws a great party, and spends as much time as possible with family.




Sara Brunelle

Sara is a landscape designer with an interest in the experiential quality of space and public realm. Her design approach is highly driven by context, people and communities, influenced by her background in community engagement and urban food production. She has designed and managed urban agriculture projects in South Africa, Mali, Ethiopia and Haiti.

Sara brings unique insight and great enthusiasm for play design to G2 Collaborative. Inspired by her work at the Child and Family Research Center where she examined the influence outdoor play environments have on children’s behaviour and social interactions, Sara has continued researching and publishing on the subject of play design. Her work focuses on challenging traditional ideas of play and developing guidelines and beautiful spaces that place the needs of children and teens first.

She holds a Bachelor of Fine Arts and Art History from Concordia University and a Master in Landscape Architecture from the University of British Columbia.

Sara excels at striking up conversations with strangers on all means of public transport. On her free time, Sara likes to ride her bike really far.


Martha Pederson

Martha has a Master of Landscape Architecture degree from the University of Illinois and a Master in Counseling Psychology degree from Boston College. Prior to joining G2 in 2015, she worked at Sasaki Associates, Richard Burck Associates, and Cheshire County Council in Chester, England. She also has a private psychotherapy practice in Watertown and Waltham. Martha is perpetually interested in the many ways our spaces affect the way we feel and how we experience the world on both large and small scales. While not spending time in the mental playgrounds of landscape architecture and psychotherapy, Martha is an obsessive reader, enthusiastic seamstress and determined climber.


Elizabeth Gourley

Liz has been working in the field of landscape architecture for over 20 years. She grew up in California learning a love of plants from her father, and after earning a Bachelor of Arts in Cultural Anthropology at UC Berkeley Liz realized she could combine her love of people and plants through landscape architecture. She returned to UC Berkeley for a Master of Landscape Architecture degree and began her career working on large scale institutional projects both locally and internationally in China, India, Korea and Beirut at EDAW and WRT in San Francisco and Richard Burck Associates in Somerville, MA. In 2009, Liz launched her own firm, Elizabeth Gourley Design, and has continued her long standing interest in environmental stewardship, design and people through her own work. For the last three years, Liz has contributed her plant, design and construction knowledge in collaboration with G2 Collaborative. Liz is a plant aficionado and foodie, and combines the two with a love of edible landscapes.


Yiyang Qian

Yiyang is interested in issues surrounding social phenomena, environmental psychology and anthropology. She is fascinated by the complexity of humanity and multi-disciplinary systems sculptured and integrated together in landscape design. After receiving her Master of Landscape Architecture at Rhode Island School of Design in 2017, Yiyang joined G2 in 2018. She also earned her bachelor of Urban Design at Wuhan University in China prior to coming to New England. As a foreigner, she is driven by her identity to be more sensitive to social vulnerable groups.

Yiyang loves to explore countries all over the world. She learnt weaving in Sri Lanka, studied building techniques in India and researched ancient astronomical monuments in France.

Yiyang is a music lover and a amateur film photographer. She walks on the streets and observes reflections merging into new images in the windows.