Dianora’s Winter Garden Challenge turns an impossible seasonal spectacle into a test of what love demands and what generosity can refuse. Madam Dianora asks Messer Ansaldo Gradense for a garden in January as green and flower-filled as one in May, believing the task will end his importunities. He fulfills it through a necromancer’s art; yet when her husband Gilberto allows her to keep her promise, Ansaldo declines to claim her. The episode’s decisive reversal is not the making of the garden but the choice, by both men, to answer desire with generosity rather than possession.

The challenge and its impossible condition

The tale is set in Udine, in Friuli, a country described as cold but rich in mountains, rivers, and clear springs. Madam Dianora is a noble and beautiful woman married to Gilberto, a wealthy gentleman distinguished by his easy, courteous disposition. Messer Ansaldo Gradense, a high-ranking baron celebrated for prowess and courtesy, falls passionately in love with her. His repeated messages and solicitations do not move her to return his love; instead, they weary her.

To put an end to the pursuit, Dianora devises a demand that she considers impossible. Through a woman who regularly carries messages between them, she lets Ansaldo know that she might comply with his wishes if he proves the depth of his love by creating, in the coming January, a garden near the city as lush as May: green grass, flowers, and trees in full leaf. The test is deliberately extraordinary, and its terms carry a threat. If he cannot accomplish it, he must cease sending either the intermediary or anyone else; if he continues to importune her, Dianora will tell her husband and family, though until then she has kept the pursuit secret from them.

A garden made against winter

Ansaldo understands that the demand is meant to deprive him of hope, but he resolves to attempt what he can. He sends inquiries to different parts of the world for assistance and eventually finds a practitioner willing to achieve the feat through necromantic art, in return for a great sum of money. The agreement converts the lady’s impossible condition into a real undertaking, with Ansaldo risking substantial payment for the possibility of winning her favor.

The appointed time arrives amid severe cold, snow, and ice. On the night before the calends of January, the necromancer works in a fine meadow adjoining the city. By morning, witnesses see there a garden of remarkable beauty, with green grass, trees, and fruits of every kind. Ansaldo first views the transformed meadow with delight. He then has its finest fruits and fairest flowers gathered and secretly sent to Dianora, accompanying them with an invitation to see the garden and a reminder that she has sworn to fulfill her promise.

The garden is both proof and pressure: it demonstrates that Ansaldo has met the stated condition, while the gifts make the consequences of Dianora’s promise tangible before she has even seen the place. Curious about the marvel but already repenting of her agreement, she visits with many other women of the city. She admires what has been made, then returns home profoundly troubled by what she believes she now owes. The public wonder of the garden thus gives way to a private crisis.

Gilberto’s decision and Dianora’s visit

Gilberto notices that his wife’s distress is difficult to conceal and presses her to explain it. After remaining silent for a long time out of shame, Dianora tells him the whole story. His first response is anger. On reconsideration, however, he distinguishes her intention from the bargain she made: he recognizes that she had sought to rid herself of Ansaldo, not to invite an affair. He reproves her for listening to the proposal and entering into terms concerning her chastity, but then offers a remedy that places the decision back in her hands.

Gilberto tells Dianora to go to Ansaldo and attempt to obtain release from her promise while preserving her chastity. If no other course is possible, he says, she may yield her body on this one occasion, though not her soul. Dianora weeps and refuses to accept such a concession from him, but he insists. The episode does not present her as eager to accept Ansaldo’s advances: her journey follows her husband’s command, and she goes accompanied by two serving-men and a chamberwoman, without elaborate adornment.

Ansaldo is astonished when he learns she has arrived. Before receiving her, he calls the necromancer to witness what he regards as the reward of the man’s skill. He meets Dianora respectfully and seats her in a chamber with a great fire. When he asks what has brought her, she explains that neither affection for him nor a promise willingly made has sent her; she has come at her husband’s direction and is prepared, at his command, to grant Ansaldo whatever he desires.

Restraint, release, and the changed bond

Dianora’s explanation changes Ansaldo’s response. Hearing that Gilberto has shown compassion for his passion at the cost of his own honor, Ansaldo’s ardor turns to compassion. He refuses to damage the honor of a husband who has treated his love with such generosity. Dianora is to be treated as his sister while she remains in his house, and she is free to leave whenever she wishes. He asks only that she convey her thanks to Gilberto and regard Ansaldo thereafter as a brother and servant.

Dianora leaves joyful and under honorable escort, then tells Gilberto what has happened. The promised sexual reward is not taken; instead, the encounter establishes a close and loyal friendship between Gilberto and Ansaldo. The necromancer, initially due the large sum Ansaldo promised, also renounces payment. Having witnessed Gilberto’s liberality with his honor and Ansaldo’s with his desire, he says the fee should remain with Ansaldo, where it may serve him. Although Ansaldo tries to persuade him to accept all or part of it, the necromancer persists. After three days, he removes the garden and departs.

Ansaldo’s love for Dianora does not simply vanish: the tale says he extinguishes its lustful character and remains attached to her with honorable affection. This ending completes a chain of refusals. Dianora’s demand had been meant to end pursuit; Gilberto’s permission could have made her promise an obligation; Ansaldo chooses not to exploit either the promise or the husband’s consent; and the necromancer gives up his fee. Each act answers an apparent claim with voluntary restraint.

Storytelling frame and significance

Emilia tells the episode after the company has praised Messer Gentile’s conduct in the preceding story. She presents Dianora’s story as a further example of magnanimity and concludes by comparing the two men’s generosity: Ansaldo, she argues, has acted with particular liberality because his desire remains ardent and the woman he has pursued is, in that moment, within his reach. The contrast makes restraint, rather than possession, the measure of his achievement.

The winter garden gives this moral turn its vivid form. A meadow made to look like May in the depth of January is a spectacle of artifice and apparent impossibility, but the more consequential transformation occurs among the people who see it. Dianora moves from confident testing to fearful obligation; Gilberto moves from anger to permission; Ansaldo turns passion into compassion; and the necromancer releases the payment he could claim. The marvel disappears after three days, while the relationships formed through generosity endure. The embedded tale therefore makes the garden a temporary wonder and the refusal to exploit another person the lasting result.