Jeff AllenJeff Allen, Principal
Jeff Allen is an entrepreneur in the classical sense. With the natural ability to recognize trends and emerging markets, Jeff fearlessly pursues his visions.

In the 1980’s Jeff founded Muchas Grasses, a company that evolved into the largest resource of decorative grasses in the state of California. In the late 90’s he founded Olivet Groves Organic, which now supplies buyers of olive trees and olive oil throughout California. Over the past 28 years Jeff’s flagship company, Allen Land Design has been designing and installing award winning gardens that are ecologically sound and beneficial to the environment.

In 2004 Jeff went on to cofound one of the pioneering firms in the Biodiesel industry, American Biodiesel/Community Fuels, a company utilizing a proprietary production process that ensures fuel diversity and job creation.

Jeff is currently serving as a Director on Summit State Bank board, and has also served as both vice president and president on the Sonoma County Laguna Foundation.

In all his endeavors Jeff has had the vision to see opportunities, the energy to carry out necessary tasks and the insight to choose a talented team of players to execute the success of his ventures.

Jeff’s degree in Ornamental Horticulture and his coursework in Landscape Architecture at the University of California, Davis helped shape the framework for Jeff’s interests, but it has been his hands-on involvement in land stewardship, sustainable development and on-site consultation that has made him an invaluable resource.


Sierra HartSierra Hart, Director of Design
Sierra Hart’s talent lies in her ability to combine practical business sense with her natural flair for design and environmental awareness. Her communication skills and clarity of detail allow her to lead others through the intricacies involved in the design process.

With a degree in Environmental Studies from University of California, Santa Cruz, Sierra headed south to work on experimental farm programs in Costa Rica. After returning to the US and working at a children’s camp for environmental education, Sierra stepped into the world of Landscape Architecture and design, a field which encompasses her experience and passion for sustainable agriculture and ecological design. Now with over 10 years in the field of landscape design, Sierra uses her talent to enrich various community projects and volunteer endeavors.

In her position as Director of Design for Allen Land Design she brings clients’ visions to reality on commercial and residential projects. Recent projects have included landscape renovations at Agilent Technologies Fountaingrove Campus, Santa Rosa YMCA, Bella Vineyards and many private residences.

When faced with challenging projects, Sierra’s ability to combine cutting edge creativity with a deep understanding of the practicalities involved make her an important asset to any enterprise.


annemarieallenAnne-Marie Allen, Principal

Anne Marie Allen began her landscape career in Berkeley, CA opening Barefoot Gardens while attending agricultural courses at Samuel Merritt College in the Oakland hills.

Over the 15+ years she has helped shaped Allen Land Design into its award winning state with her behind the scene contributions that include obtaining Biodynamic and Stellar Organic Certification, seasonal newsletters, garden and website photography and demonstration garden development.

Anne Marie’s interest and knowledge continues to grow as she volunteers on a local farm, attends sustainability and green building courses, trains as a beekeeper and of course works where and when needed on all projects.