Orsolya (Orsi) Lazar is an urban forester, an ISA Certified Arborist and a Pennsylvania (PA) Certified Horticulturalist in Sustainable Landscapes. Her unconventional path to forestry began with a Master’s Degree in Ecology and a Master’s Degree in Molecular and Cell Biology. She has over 20 years of experience in landscape design and management, project management, and education.

Orsi became the first Community Tree Specialist at Pennsylvania DCNR’s Urban and Community Forestry Program. She helps shape this growing program to better serve communities by building trust, identifying opportunities, and finding creative solutions to challenges. 

She works with municipalities and non-profits to increase tree benefits, manage costs and risks, and creates green spaces that suit people’s needs.

She is a member of the Pennsylvania Landscape and Nursery Association and is in the group that is working on updating the PA Certified Horticulturist study manual.

Orsi has taught gardening and tree care for diverse audiences, including workforce development programs.  Many local parks have benefited from her technical assistance and plant donations.

She created a tree inventory and installed hundreds ofbotanical signs at Merion Botanical Park as a pro bono contribution to her own community. Her “Responsible Gardening” Facebook group helps local gardeners connect and share sustainable, evidence-based practices.

When not in the garden or a park, she enjoys teaching tricks to her border collie or is on the dance floor practicing ballroom and Latin dancing.

Della Fetzer is a biologist and entrepreneur. Her company, Rebel Cultures, partners with foresters, farmers, conservationists, greenhouses, and universities to develop low-cost and biodiversity-conscious propagation solutions for seed-scarce plants, and plants that can't be efficiently propagated from seed by using new approaches to tissue culture.

Linda Langelo is a Colorado State University Extension Horticulture Specialist and host of the Relentless Gardener Podcast. The five counties under her care are in Northeast Colorado, where she assists homeowners and professionals with horticultural issues. She created a Facebook page titled, Garden the Plains to reach a broader audience with the help of Master Gardeners. The Master Gardener Program in the Golden Plains Area covers demonstration gardens, school and library programs, community gardens, and more.

During her 40 years in horticulture, she has worked in both private and public horticultural institutions. As Assistant Director of Horticulture at Salisbury State University, she helped implement an arboretum campus-wide that is still going strong today. Linda went on to be the Director at Adkins Arboretum early in its development, increasing its exposure to the local and surrounding communities. The arboretum also became a member of the American Public Garden Association under her tenure.

In July 2021, she was awarded the Lois Woodward Paul Memorial Award for her career achievements from Longwood Gardens Alumni Association as a fellow alumnus of the Longwood's Horticulture Program.

Linda is a member of Garden Communicators International, the American Public Gardens Association, a regular contributor to MarthaStewart.com, and Canada's Local Gardener. She has worked on diverse landscapes from public to private gardens including resorts and arboreta for 40 years. Linda worked from New York to New Mexico, before arriving in the Golden Plains area of Colorado where she has spent the last 19 years of her career.

Her Relentless Gardener column has received a Laurel Award from Garden Communicators International.

Bestselling author Randi Minetor writes for the Birdfinding and Best Easy Bird Guides series for Falcon Guides/Globe Pequot Press and is the author of Backyard Birding and Butterfly Gardening for Lyons Press.

Her most recent book, The Complete Language of Birds, is an encyclopedia that unites classic illustrations, science, folklore, and mythology about more than 400 bird species around the world.

Randi writes for Birding Magazine, is a regional report editor for North American Birds, and has served for three years as president of the Rochester Birding Association in New York State.

Annaliese Bischoff is a Western Massachusetts artist and landscape architect. For the past decade, she has been collecting drawings and etchings of trees by Frank A. Waugh, founder of the Landscape Gardening Program at what is today the University of Massachusetts Department of Landscape Architecture and Regional Planning.

Annaliese received a bachelor’s degree in art from Brown University and a master’s degree in landscape architecture from the State University of New York College of Environmental Science and Forestry. She began her academic career at Kansas State University, where Waugh had studied a century earlier. She taught for forty years at the University of Massachusetts department that Waugh founded.