What is made here
Wine colours
Colours the rules allow. Pick a colour to filter the rules and grapes below.
Where it is
Colli Asolani - Prosecco in Italy
- Latitude
- 45.7°–46.1° N
- Vineyard altitude
- 47 m to 248 m
- Production zone
- 106,644 ha
Lies within
Vigneti della Serenissima, Venezia, Prosecco, delle Venezie
Contains 4 appellations (outlined on the zone map)
Asolo Montello, Colli di Conegliano, Conegliano Valdobbiadene - Prosecco, Montello Rosso
Worked out from the boundaries (smallest container first). They follow whole communes, so a neighbour sharing a commune can show up here too.
Boundary drawn from whole communes, so it is a little larger than the legal zone. Boundary: Eurac Research PDO inventory (CC0). Country outlines: Natural Earth. Dots on the zone map are the vineyard points used for climate.
Showing every colour The colour filter changes the rules and grapes. Climate, vintages and soils describe the vineyards, so they stay the same.
01 · What the law says
The rules
Limits on grapes, yields, ripeness and ageing that every wine labelled Colli Asolani - Prosecco must meet.
Blend rules
Colli Asolani-Prosecco/Asolo-Prosecco
- – Glera · Main grape
- ≤ 15% Verdiso / Bianchetta trevigiana / Perera / Glera lunga · Allowed
Blend rules
Colli Asolani-Prosecco/Asolo-Prosecco Frizzante
- – Glera · Main grape
- ≤ 15% Verdiso / Bianchetta trevigiana / Perera / Glera lunga · Allowed
Blend rules
Colli Asolani-Prosecco/Asolo-Prosecco Spumante Superiore
- – Glera · Main grape
- ≤ 15% Verdiso / Bianchetta trevigiana / Perera / Glera lunga · Allowed
- ≥ 85% Glera · Main grape
- – Pinot bianco / Pinot nero / Pinot grigio / Chardonnay · Allowed
Blend rules
Colli Asolani-Prosecco/Asolo-Prosecco Spumante sui Lieviti
- – Glera · Main grape
- ≤ 15% Verdiso / Bianchetta trevigiana / Perera / Glera lunga · Allowed
- ≥ 85% Glera · Main grape
- – Pinot bianco / Pinot nero / Pinot grigio / Chardonnay · Allowed
Other varieties allowed
Besides the main grapes, the rules allow these varieties in some wines. Grape names link where a profile exists.
8 varieties · 10 wines
Bianchetta Trevigiana, Chardonnay, Glera Lunga, Perera, Pinot Blanc, Pinot Grigio, Pinot Noir, Verdiso
In the vineyard and cellar: rules for every wine
3,000
Vines per hectare, minimum
Training
Systems allowed
spalliera semplice
No forcing
Forcing the vines is prohibited
Emergency only
Irrigation
Cellar
Where the wine must be made
Within the production zone
02 · Climate fingerprint
The climate
The growing season averages 16.9 °C, intermediate on Gregory Jones's scale, with 1,479 growing degree days (Winkler II).
The average year 1991–2020, vineyards at about 217 m
Monthly mean, °CRain, mmGrowing season
- Growing-season temperature
- 16.9 °C
- Intermediate · 15–17 °C (Jones)
- Growing degree days
- 1,479
- Region II: 1,389–1,666 degree days
- Growing-season rain
- 942 mm
- Of 1,456 mm a year
- Harvest rain
- 300 mm
- September–October
Copernicus ERA5-Land monthly averages at 5 vineyard points (Vineyard point 1, 199 m; Vineyard point 2, 196 m; Vineyard point 3, 141 m; Vineyard point 4, 370 m; Vineyard point 5, 180 m), moved to each point's height from the model's terrain. Indices that need daily data are not captured yet. How the climate figures are made.
Lower confidence:Monthly reanalysis in moderately complex terrain; not yet checked against a weather station.
Closest climates in the database
Picked by the data, not by hand: the profiles nearest on season warmth (counted twice), degree days, rain, ripening-month nights and day–night range. Neighbours within 30 km are left out, as they share the same weather.
1. Vipavska dolinaVery similarCompared with Colli Asolani - Prosecco: same season warmth, similar rain.
2. KrasVery similarCompared with Colli Asolani - Prosecco: same season warmth, similar rain.
3. CaremaVery similarCompared with Colli Asolani - Prosecco: same season warmth, similar rain.
Growing-season temperature
Growing degree days
Growing-season rain
03 · Year by year
35 vintages
Each column is one growing season: heat above or below the 1991–2020 average, and rain at harvest. Pick a year for the details.
Warmer than averageCooler than averageHarvest rain (Sep–Oct)Average harvest rain, 300 mm
2025
- Growing-season temp.
- Growing degree days
- Harvest rain
- Growing-season rain
- September nights
- Hot days and frosts
Seasons are labelled by harvest year (April–October). Year-to-year changes from ERA5-Land; tested against station records in Alto Adige (r = 0.94 for season temperature at Bolzano). Rain varies more locally, so treat single-season rain with some caution. Vintage ratings, harvest dates and frost or hail events have places in the data model but are not loaded yet.
04 · Where the numbers come from
Sources
- A geospatial inventory of regulatory information for wine protected designations of origin in Europe · Candiago et al., Scientific Data 9, 394 (2022); Eurac Research · CC0
- Quality wines in Italy and France: a dataset of PDO specifications · figshare 25393261 · CC BY 4.0
- ERA5-Land monthly averaged data (reanalysis-era5-land-monthly-means) · Copernicus Climate Change Service (C3S), Climate Data Store · CC BY 4.0 (Copernicus licence)
- OpenStreetMap vineyard areas (landuse=vineyard), from Geofabrik country extracts · OpenStreetMap contributors · ODbL 1.0
- Copernicus DEM GLO-90 (AWS open data tiles) · European Space Agency / Copernicus · Copernicus DEM licence
- Disciplinare di produzione: Colli Asolani - Prosecco · Ministero dell'agricoltura, della sovranità alimentare e delle foreste (MASAF) · Official act
- Appellation nesting worked out from boundaries (pipeline/build_nesting.py) · Vinous, from the Eurac PDO boundaries · CC0 (source data)
- Climate profiles calculated by Vinous: method
Still to check (3)
- Generated from EU reference data: check against the current product specification.
- From the specification: Still wine ranges from secco to abboccato, frizzante from secco to amabile and spumante from Extra Brut to Demi-sec, so sweetness is left null for those. The 'sui lieviti' spumante is refermented in bottle (started 1 March to 30 June after harvest) without disgorging, sold as Brut Nature, and released after at least 90 days on the lees. Spumante may include wine from Pinot bianco, Pinot nero, Pinot grigio and Chardonnay provided the product contains at least 85% Glera wine.
- National tier (DOC/DOCG) not captured yet; rules extracted from the specification text.