On our season finale, host Carmen Devito visits Zone 1 of the USDA Plant Hardiness Zone Map, which includes Alaska, and also revisits Zone 13, which includes Puerto Rico.

First, we hear from Peter Johnson and Rusty Foreaker, agronomists with Alaska's Department of Natural Resources Division of Agriculture. After the break, we're joined by Dr. Grizelle González, Project Leader of the Research and Development Unit at the International Institute of Tropical Forestry in Puerto Rico.

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This month on We Dig Plants, hosts Alice Marcus Krieg and Carmen Devito visit Zone 2 of the USDA Plant Hardiness Zone Map, which includes Fairbanks, Alaska, where our first guest Cyndie Warbelow is a gardener.

After the break, we're joined by Marta McDowell, author of The World of Laura Ingalls Wilder: The Frontier Landscapes That Inspired the Little House Books.

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This month on We Dig Plants, hosts Alice Marcus Krieg and Carmen Devito visit Zone 3 of the USDA Plant Hardiness Zone Map, which includes parts of Alaska.

Joining them on the line is Jeff Lowenfels, the author of a trilogy of award winning books on plants and soil, and the longest running garden columnist in North America.

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This month on We Dig Plants, hosts Alice Marcus Krieg and Carmen Devito visit Zone 4 of the USDA Plant Hardiness Zone Map, which includes the Wisconsin prairie.

A pioneer in the native plant industry and recognized internationally as an expert in native plant community ecology, Neil Diboll has guided the growth of Prairie Nursery for 30 years. He has dedicated his life to the propagation of native plants and their promotion as uniquely beautiful, ecologically beneficial and sustainable solutions for landscapes and gardens. In 2013 Neil was the recipient of the Great American Gardeners Award from the American Horticultural Society.

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This month on We Dig Plants, hosts Alice Marcus Krieg and Carmen Devito visit Zone 5 of the USDA Plant Hardiness Zone Map, which includes parts of both Nebraska and Iowa.

Del and Alice Hemsath are members of Nebraska's Soil Sisters and Misters Garden Club, which promotes education of the general public about the importance of outside activities for health, supports community projects, and provides education for youth and adults.

Kelly Norris is an award-winning author and plantsman from Iowa and the first director of horticulture at the Greater Des Moines Botanical Garden, a newly revitalized public garden in Des Moines, Iowa.

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This month on We Dig Plants, hosts Alice Marcus Krieg and Carmen Devito visit Zone 6 of the USDA Plant Hardiness Zone Map, which includes Utah and western New York.

Geoff Ellis is a landscape architect in Salt Lake City. He was born and raised in Utah and received a Master's Degree in Landscape Architecture from Utah State University. He is the Past President of the Utah Associated Garden Clubs and currently the President of the Alternative Garden Club.

Sally Cunningham is a garden writer, educator, and CNLP (landscape professional), well known in Buffalo after 23 years on Channel 4 (WIVB-TV) and as columnist for the Buffalo News and Buffalo Spree magazine. She is formerly a Master Gardener and Cooperative Extension Agent. She is also author of Great Garden Companions which has sold 50,000 copies. She leads Great Garden Travel for AAA around the U.S. and Europe.

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This month on We Dig Plants, hosts Alice Marcus Krieg and Carmen Devito visit Zone 7 of the USDA Plant Hardiness Zone Map, which includes our home state of New York, as well as Virginia.

Joining them are Dr. Cait Field, Manager for Science and Research Development at Freshkills Park in Staten Island, and Symsi Houser, ‎Operations Coordinator for the Virginia Beach Department of Parks and Recreation.

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John Coykendall is a renowned heirloom seed saver, a classically trained artist, and Master Gardener at Blackberry Farm, one of America’s top resorts. For nearly four decades, Coykendall’s passion has been preserving the farm heritage – the seeds and stories - of a small, farming culture in Southeastern Louisiana, and this work is the subject of a new documentary, Deeply Rooted, from Louisiana Public Broadcasting. The documentary will be screening at Slow Food Nations in Denver this July.

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