Growing Nuts in the North: A Personal Story of the Author's Experience of 33 Years with Nut Culture in Minnesota and Wisconsin

In Short

This book serves as both a memoir of a dedicated horticulturist and a practical manual for the aspiring nut grower in northern regions. It chronicles decades of trial and error, tracing the author’s persistent efforts to cultivate black walnuts, hickories, butternuts, and hybrid hazilberts in Minnesota and Wisconsin. By sharing his specific successes and frequent failures, the author provides a grounded, scientific guide to propagation, grafting, and protective cultivation. It remains a foundational text for cold-climate gardening, blending technical horticultural advice with a quiet, contemplative philosophy about the restorative power of working closely with nature.

The Story

The narrative begins with a modest ambition: to grow nut-bearing trees in the northern dooryards of Wisconsin and Minnesota—a goal often considered impossible due to the harsh winters and short growing seasons. The author approaches this challenge not as a professional researcher, but as a hobbyist driven by a profound personal curiosity. He describes the initial, often discouraging phases of his journey, marked by the loss of countless young trees to frost, rodents, and poor soil conditions. Rather than providing a list of easy victories, he details the reality of his experience, noting that many of his early attempts with hickory and walnut grafts resulted in total failure.

The arc of the book follows the evolution of his methods as he moves from a naive beginner to a sophisticated experimenter. He learns, for instance, that squirrels are not merely pests but unintentional agents of botanical discovery, inadvertently teaching him about soil suitability through their habit of scattering and reburying nuts. He recounts the development of his own techniques for protecting grafts from the elements, including the use of elaborate, box-like structures filled with oak leaves for insulation. Through steady, iterative work, he achieves breakthroughs, such as identifying the "Weschcke hickory"—a thin-shelled, high-quality nut that he discovered after a long, wintery search through Iowa.

As the years progress, the scope of his work expands to include hybridizing. He becomes deeply involved in the Northern Nut Growers' Association, forming lasting friendships with other enthusiasts and experts. He describes the transition of his interest from simple dooryard planting to the more complex science of cross-pollination, including his work with "hazilberts"—a hybrid of the wild hazel and the European filbert. He details how he learned to predict the quality of future nuts by carefully examining the color and size of tree buds, a technique that demonstrates his growing intuitive grasp of plant biology.

The story concludes with a broad outlook on the future of nut culture in the north. He reflects on his own findings, such as the correlation between tree bark color and winter hardiness, while acknowledging that many of his experiments are still in their early stages. He does not claim to have mastered nature; instead, he offers his accumulated knowledge as a foundation for future horticulturists. The ending is reflective and encouraging, emphasizing that while commercial success remains a goal, the primary reward has been the healthful, meditative discipline of the work itself. He presents the planting of a single tree not just as a horticultural act, but as a long-term investment in land and legacy.

How It Unfolds

The voyage begins The author sets the stage by explaining his initial, often frustrating attempts to grow nut trees in the unforgiving climate of the upper Midwest. He emphasizes that his early failures with hickories and black walnuts served as the necessary, if painful, tuition for his later successes.

Lessons from the wild He details his interactions with local wildlife, particularly the role squirrels played in his experiments by spreading seedlings across his farm. This section highlights his transition from attempting to control nature to observing and learning from its unpredictable patterns.

The breakthrough of the Weschcke hickory He recounts the arduous search for a superior hickory variety, eventually finding a thin-shelled specimen in Iowa during a snowstorm. This discovery becomes the centerpiece of his work, leading to deep investigations into the importance of cross-pollination and floral biology.

The science of hybridizing The narrative shifts to the more technical aspects of his work, specifically the development of the "hazilbert." He explains how he used magnifying gear and pollen guns to cross-breed species, illustrating his process with sketches and detailed observations of bud morphology.

Refining the nursery He provides comprehensive advice on the physical infrastructure required to succeed in the north, including the construction of rodent-proof seed beds and the use of aluminum shields for winter protection. This part of the book serves as a grounded, technical manual for the reader.

A legacy of observation The closing chapters focus on the broader implications of his research, including his theories on bark color as an indicator of cold hardiness. He leaves the reader with the encouraging message that the pursuit of nut culture is a lifelong, restorative endeavor.

The People

The author, Carl Weschcke, is the central figure, whose patient, persistent, and somewhat solitary character defines the narrative. He is a man who finds deep spiritual and mental satisfaction in the soil, viewing his decades of labor as a "tonic." He is deeply humble about his lack of formal professional training, often contrasting his own trial-and-error approach with the formal research of his peers.

J. F. Jones, a nurseryman from Lancaster, Pennsylvania, serves as the author's primary mentor and friend. Jones represents the importance of community in niche horticultural pursuits; his generosity and expertise pull the author through moments of deep discouragement. Their relationship is described as a pure, selfless bond, built on a shared passion that transcends commercial interests.

Dr. J. W. McKay, an associate cytologist with the U.S. Department of Agriculture, appears as the scientific counterpart to the author’s practical experimentation. Their collaboration—specifically concerning the abortive staminate bloom of the Weschcke hickory—highlights the author's transition into more rigorous scientific observation.

Finally, the author’s family and employees are mentioned as essential, if indirect, contributors to his work. His children are noted for their curiosity, even assisting in his experiments with bull snakes, while his employees help manage the practical labor of the nursery. These figures ground the author’s scientific work in the everyday reality of a working farm.

In Its Own Voice

"To me, this has been a hobby with results both practical and ornamental far beyond my original conception."

Reflecting on his life’s work, the author considers the unexpected bounty of his long-term horticultural project.

"True and lasting friends such men make, too, with no circumstances of selfish import to taint the pleasure of the relationship."

The author describes the camaraderie he developed with other nut enthusiasts, emphasizing the bonds formed through shared knowledge.

"Working with nature to develop new varieties of trees is fascinating although it requires infinite patience and study combined with skill and concentration."

Explaining the appeal of hybridizing, the author identifies the key virtues necessary for the serious horticulturist.

What It's Really About

At its heart, this book is an exploration of the relationship between human ambition and the constraints of climate. It asks how one person can effectively nudge nature in a specific direction—in this case, breeding trees to withstand sub-zero temperatures—and how much patience that process requires. The book argues that horticulture is a deeply creative, almost artistic, act that requires a fundamental shift in perception: one must learn to view "failures" as data points and "slow growth" as a natural, healthy process. Ultimately, it is a meditation on the value of a long-term, outdoor hobby as a means to find peace and inner satisfaction, suggesting that the act of nurturing a living thing is a reward in itself.

Why Read It Today

Readers who find peace in the quiet rhythms of gardening or who have an interest in the "how-to" of specialized agricultural experiments will find this a deeply rewarding companion. It is written in a clear, sincere, and unpretentious style that makes the technical aspects of grafting and pollination feel accessible rather than daunting. Reading it feels like sitting down with a seasoned, thoughtful neighbor who has spent decades observing the land and is eager to share what he has learned.

However, modern readers should be prepared for the author's mid-twentieth-century perspective; his attitudes toward wildlife—specifically his use of poison to manage rodents—reflect a time when such methods were standard practice, which may be jarring to contemporary sensibilities. Furthermore, the book is quite granular; it is a specialized technical record of specific tree varieties and methods, which might feel slow-paced to those looking for a quick narrative. Nevertheless, the book’s greatest strength remains its unwavering commitment to the idea that patience and close observation can yield beauty even in the most difficult environments. You will likely walk away with a profound respect for the slow, persistent work of the natural world and the humans who choose to study it.