The art of promoting the growth of the cucumber and melon: in a series of directions for the best means to be adopted

In Short

Thomas Watkins's 1824 treatise is a definitive, hands-on manual for growing forced cucumbers and melons in cold-climate greenhouses and dung-heated hotbeds. Drawing on decades of commercial market-gardening experience in London, Watkins details the exact preparation of fermenting horse manure, soil composition, air management, and seasonal protection needed to raise fruit out of season. His text has endured as a pristine snapshot of early nineteenth-century horticultural technology, revealing the astonishing mechanical and physical ingenuity required to harness microbial heat and create microclimates before modern heating or electricity existed.

The Story

The book moves as a chronological instruction manual, guiding the gardener through an entire year's cycle of forcing fruit under glass, beginning in the depth of autumn and ending with midsummer harvests. Watkins opens with the delicate, high-stakes process of establishing the October seed-bed. He instructs the reader on the selection, moistening, and thrice-weekly turning of horse manure to achieve a sweet, stable fermentation. Young plants raised in this bed must be carefully guarded against "rank steam" and winter cold using carefully managed air vents, layered straw or hay wrappings—which act as an "artificial sun"—and precise daily watering with milk-warm water.

As the calendar turns to November and December, the narrative advances to the construction and purification of the fruiting frame. Watkins explains how to transfer the young plants into specialized soil mixtures—combining leaf mould, road sand, and bog earth—and details the vital importance of building insulated side-linings of hot dung around the wooden boxes to maintain temperatures between sixty-five and eighty degrees Fahrenheit. He details daily routines: washing the glass panes inside and out to maximize scarce winter sunlight, shading the beds with evergreen boughs during intense spring bursts, and hand-pollinating female blossoms using the male flower's glutinous pollen. He also provides remedies for garden pests, offering traps for woodlice and a potent recipe using ox vomica to clear invasive mice.

Moving into the new year, Watkins addresses the January seed-bed, which requires even heavier manure beds and thicker hay coverings to withstand winter freezes. By early spring, the focus shifts to late-season glass frames and hand-glass crops sown from March through May, where trenching and soil depth replace the heavy artificial linings needed in winter.

The final movement of the book applies these environmental principles to the culture of melons—including Cantaloupe, Green Flesh, and massive Rock varieties. Melon culture demands even tighter regulation of moisture and heavy loamy soils to prevent root damage, "canker," or red spider infestations. Watkins concludes his guide with precise structural blueprints for constructing wooden boxes, glass lights, and nine-inch brick pits, completing a comprehensive blueprint for year-round production.

How It Unfolds

Preparing the bed The gardener begins three weeks before sowing by stacking, watering, and repeatedly turning fresh horse manure into a square heap to induce uniform fermentation without burning.

Sowing and early care Cucumber seeds are planted in coarse, unsifted leaf mould and road sand, placed inside the heated frame, and given constant day-and-night ventilation to produce sturdy, short-stemmed shoots.

Building the linings As winter cold sets in, fresh dung and sweet hay litter are packed tightly around the outside of the wooden boxes to maintain a rising steam heat while preventing cold drafts from penetrating the frames.

Managing heat and light The grower washes the glass frames regularly, adjusts night coverings from single mats to a foot of hay depending on the frost, and uses an "artificial sun" of wrapped insulation to keep plants dry and warm.

Pollination and fruit setting The gardener hand-pollinates female flowers using male blossoms tested for sticky pollen, then trims the vines and uses wooden pegs to keep young fruit growing perfectly straight.

Cultivating the melon Transitioning to melons, the grower builds deep, stiff-loam beds, carefully regulating water without a spray rose and using evergreen boughs to provide dappled shade during intense summer heat.

The People

• Thomas Watkins — The author and master gardener, former foreman at major London fruit nurseries. He seeks to share his proven, award-winning techniques for out-of-season fruit forcing. Driven by a desire for practical perfection, he rejects theoretical shortcuts in favor of rigorous, hands-on diligence.
• The Father — Watkins's early mentor, a gardener of high repute in the field of early framing. He serves as the foundational influence who sparked Watkins's lifelong inclination to study and experiment with cucumber and melon culture.
• The Contemporary Competitors — Rival horticulturists whom Watkins routinely supersedes at annual show competitions. They represent standard, less precise methods of framing that often result in yellow, sickly, or cankered plants.
• The Unexperienced Gardener — The intended reader, who often struggles with winter dampness, lost plants, or over-sifted soil. They stand to gain consistent, high-yield results by shifting from careless reliance on brick pits to Watkins's disciplined dung-bed system.

In Its Own Voice

"Keep the bed always wrapped up to nearly the top of the box with hay, straw, or any kind of sweet litter... this will have the desired effect in promoting a top heat, and obviating the difficulty above-mentioned, in keeping the plants perfectly dry."

Context: Watkins explains his concept of an "artificial sun" to prevent cold winter moisture from killing delicate plants.

"The sifting mould to a fine degree is an error too prevalent in horticulture, and ought particularly to be avoided, from its great tendency to bind."

Context: Giving practical soil instructions, Watkins warns against over-processing potting earth for young seedlings.

"An insufficiency of moisture is an error too prevalent with many gardeners in the culture of the melon, and indeed the inferiority of their fruit, both in weight and flavour, may be greatly attributed to want of judgment in this particular..."

Context: Watkins critiques common growing mistakes, explaining why proper watering is essential for high-quality melons.

What It's Really About

Watkins's manual is fundamentally an inquiry into human control over natural seasons. Beneath its practical directions on manure heaps and soil mixtures lies a rigorous system of thermodynamics and microclimate creation. The text argues that success in horticulture is not a matter of luck or expensive architecture, but of unwavering attention, accurate observation, and empirical trial. Watkins continually contrasts the costly, inefficient illusion of modern technology—such as dry, expensive brick heating pits—with a deep understanding of natural biological processes, specifically the sweet steam generated by decomposing organic matter. It presents gardening as a discipline where patience, cleanliness, and precise daily habits allow a grower to defy the harsh English winter.

Why Read It Today

The Art of Promoting the Growth of the Cucumber and Melon offers an enchanting look into the lost world of Regency-era artisanal horticulture. Modern readers, organic gardeners, and historians will marvel at the sheer level of human effort and physical intuition required to grow tropical fruit in nineteenth-century England using little more than glass, wood, and horse dung.

Watkins writes with direct, unpretentious clarity, making the antique manual surprisingly accessible and readable. While contemporary readers will not need to boil ox vomica on bread to deal with greenhouse mice, the book's core principles—soil structure, ventilation, humidity control, and microclimate management—remain fundamentally sound. The reader experiences the quiet satisfaction of watching a master craftsman work through every detail of his trade. It leaves you with a profound appreciation for the historical ingenuity that laid the foundation for modern agriculture.