17. Maggio 2026
When the Vines Flower: The Most Magical Week in the Prosecco Hills
Vine Flowering Prosecco Hills – The Most Magical Week in Conegliano Valdobbiadene UNESCO
For just a few days every May, the Prosecco UNESCO hills fill with an extraordinary perfume. The Glera vine is in flower. 100 days later — the harvest begins.
There is a week in May — around the 20th to the 25th, depending on the year and the temperature — when something extraordinary happens in the hills between Conegliano and Valdobbiadene.
The vines flower.
It lasts only a few days. Blink and you miss it. But if you are here — walking these slopes, standing between the rows of old Glera vines, breathing the air of these UNESCO hills — you will never forget it.
A perfume that has no name.
The flowering of the Glera vine produces one of the most delicate and extraordinary perfumes in the natural world. It is not the heavy sweetness of roses or the sharpness of citrus. It is something softer, more elusive — floral and honey-like, with a mineral undertone that speaks directly of the limestone soil beneath your feet.
It fills the air of the entire hillside. You smell it before you see it.
And it lasts only a few days. The temperature must be right — warm enough to encourage the flowers to open, not too hot, not too cold. The vine decides when it is ready. No farmer, no agronomist, no technology can hurry it.
This is one of the most important moments in the entire year for these hills — and one of the least known.
100 days.
There is an ancient rule in these hills — one that every farmer knows and every vintage confirms. From the day the vine flowers to the day of harvest: one hundred days.
In the Conegliano Valdobbiadene UNESCO hills, the Glera typically flowers between the 20th and 25th of May. Count one hundred days forward — and the harvest arrives at the end of August, the beginning of September.
If flowering comes later — pushed back by a cold spring or a week of rain — the vendemmia follows exactly one hundred days behind.
It is not a guideline. It is not an approximation. It is the rhythm of the vine — precise, ancient, unchanged by centuries of observation. The farmers of these UNESCO hills have always known it. And every September, the harvest proves them right.
When you stand in a flowering vineyard with me in May, you are already standing one hundred days before the harvest. The wine you will drink next year is being decided right now — in these flowers, in this perfume, in this moment.
Why it matters.
The flowering of the vine is not just beautiful. It is the moment that determines the harvest.
Each tiny flower, if successfully pollinated, becomes a grape. Each grape that develops through the summer carries inside it the memory of this moment — the temperature, the humidity, the particular quality of the light on these south-facing slopes in mid-May.
A good flowering means a good harvest. A cold snap, a sudden rain, a few days of wrong weather — and the yield drops, the grapes are fewer, the vintage already begins to tell its story.
The old farmers of these hills read the flowering the way others read the sky — with attention, with experience, with a knowledge accumulated over generations that no instrument can replace.
When you walk these slopes with me during flowering, you are not just seeing a beautiful moment in nature. You are watching the birth of the wine you will taste at the end of the tour.
The Glera in flower.
The Glera — the ancient autochthonous grape variety of these UNESCO hills — produces small, delicate clusters of flowers. Nothing dramatic. Nothing showy. Just tiny blossoms, almost invisible unless you look closely, releasing their perfume into the warm May air.
The ancient varieties — Bianchetta, Perera, Verdiso, Prosecco Lungo and Prosecco Tondo — flower alongside the Glera, each with its own timing, its own rhythm, its own particular scent.
Standing in an old vine vineyard during flowering — surrounded by vines that are 90 to 100 years old, their roots deep in the limestone, their trunks thick with decades of growth — is one of the most moving experiences these hills can offer.
The vine has done this every May for a century. It will do it again next year, and the year after. With or without us.
A moment you can only experience here.
The flowering of the vine is not on any tourist itinerary. It does not appear in any guidebook. There is no ticket to buy, no reservation to make.
It simply happens — quietly, briefly, extraordinarily — in the hills between Conegliano and Valdobbiadene, every May, when the temperature decides it is time.
All my tours include a visit to a vineyard. During flowering season, that visit becomes something else entirely. You stand among the vines, you breathe the air, you understand — perhaps for the first time — that wine is not made in a cellar.
It begins here. In this moment. In this perfume.
When you walk these hills with me in May, you may be lucky enough to catch the flowering at its peak — two or three days when the perfume is at its most intense, when every row of vines is alive with the possibility of the harvest to come.
The Glera will flower around the 20th to 25th of May. One hundred days later — around the end of August, the beginning of September — the harvest begins.
It is not guaranteed. The vine decides.
But if you are here — you will never forget it.
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