Marta's work typically follows the relationship between the pen and the trowel, which is authors and their gardens. Her latest book Unearthing The Secret Garden explores the plants and places that inspired Frances Hodgson Burnett to write the classic children's book. Timber Press also published Emily Dickinson's Gardening Life, The World of Laura Ingalls Wilder, All the Presidents' Gardens, and Beatrix Potter's Gardening Life. All the Presidents' Gardens made The New York Times bestseller list and won an American Horticultural Society book award in 2017. Beatrix Potter's Gardening Life won the Gold Award from the Garden Writers Association and is now in its eighth printing. Her books have been translated into Chinese, Italian, Japanese, and Korean. Marta's next book, about plant and horticulture themes in crime fiction, will be called Gardening Can Be Murder and is due out from Timber Press in September 2023.