Dr. Chantel White of the University of Pennsylvania uses archaeological techniques to identify plants that grew in the garden of pioneering plant collectors John and William Bartram. Thanks to her work, a long-gone garden is re-emerging into the light.

Panayoti Kelaidis, Senior Curator and Director of Outreach at the Denver Botanic Gardens, discusses his love affair with the rock garden plants of Colorado and how he has traveled the world seeking adapted plants from climatically similar "steppe" regions

Nicholas Geron of Clark University describes his research into the effects of tree cover on urban landscapes, and how economically disadvantaged communities are, due to lack of trees, already experiencing the heat predicted elsewhere for the next generation of global warming.

Dr. Desirée Narango of the University of Massachusetts Amherst describes her research that reveals the essential connection of songbird breeding success with the percentage of native plants in the surrounding landscape.

Dr. Enrique Salmon, a native American of the Raramuri people and professor of ethnic studies at California State University East Bay, discusses his new book, Iwigara about the ethnobotanical traditions and science of American Indians

Laura Hansplant, Director of Design at RoofMeadow describes her firm's pioneering work with "elevated landscapes" and the habitat for wildlife and people it creates on roof tops

Merlin Tuttle, founder of Bat Conservation International and Merlin Tuttle's Bat Conservation, details the important roles of bats in the garden and the environment, and addresses the charge that they are the source of the Covid-19 virus.

Rick Carr, Master Composter and Farm Director of the Rodale Institute, share tips for easy, more effective composting

Willie Crosby of Fungi Ally discusses the wonders of fungi and the cultivation of mushrooms for the home gardener

Award-winning garden blogger, Helen Battersby of Toronto, Canada details the success of the cosmetic pesticide ban in her province – with potential lessons for U.S. gardeners

Plant Explorer Daniel Hinkley discusses his new book, Windcliff: A Story of People, Plants, and Gardens, and the ecology that underpins his collection of exotic plants

Ethan Dropkin of Larry Weaner Landscape Associates describes the invaluable role our native annuals can play in the ecological landscape

Dr. Carole Cheah of the Connecticut Agricultural Experiment Station describes her institution's successful program to protect eastern hemlocks, a foundational species of woodland habitats, from the hemlock woolly adelgid, an introduced pest that has too often proved fatal in other regions.

Award-winning landscape designers Marilee Kuhlman and Tom Rau explain the techniques they use to harvest rain water and make their gardens more climate adapted and sustainable

Master Naturalist Ben Pfeiffer, founder of Firefly Conservation and Research, discusses the wonders of fireflies, the challenges they face, and how gardeners can foster these intriguing insects

Artist Sam Van Aken explains how he uses grafting to create living sculptures from heirloom fruit trees while preserving our historic fruit heritage

The co-founders of Wildflower Farm discuss this pioneering nursery's 3-decade history of innovation and its impact on environmentally based gardening.

Maggie Redfern of the Connecticut College Arboretum discusses planting native species as street trees and restoring urban habitat

Nash Turley of the University of Central Florida discusses the program he and colleague Barbara Sharanowski have developed to help homeowners nationwide convert areas of lawn to pollinator habitat painlessly and quickly with the help of their mobile phones.

Historical ecologist Michael Gaige details how he reads clues in the landscape to reveal its past and understand its present