Lieu-dit · Saint-Martin-sous-Montaigu
La Garenne
La Garenne is a lieu-dit in Saint-Martin-sous-Montaigu, Côte Chalonnaise, Burgundy, whose largest tier is regional.
3.40 ha
delimited
283 m
elevation
9.8 h
sun at harvest
Open on the mapWith the boundary, the plots, the sun through the year and the bedrock.
In figures
| Level | Regionalinao-aoc-viticoles-bulk (c. 4 September 2026) |
|---|---|
| Village | Saint-Martin-sous-Montaigu |
| Region | Côte Chalonnaise, Burgundy |
| Delimited | 3.40 hainao-aoc-viticoles-bulk (c. 4 September 2026) · cadastre-etalab (4 September 2026) |
| Planted | 0.80 hacadastre-etalab (4 September 2026) · ign-bdtopo-vigne (5 September 2026) · ign-rpg-2024 (5 September 2026) |
| Parcels | 21 |
| Grape variety | chardonnay, pinot noir, pinot blanc, pinot gris, aligoté, melon, sacy also permitted: gamayinao-cahiers-des-charges (7 September 2026) · dgddi-superficies-produits (7 September 2026) · franceagrimer-observatoire-viticulture (7 September 2026) |
| Organic | 26%agence-bio-cartobio (c. 5 September 2026) · agence-bio-operateurs (5 September 2026) |
Place in the village
Among the 22 named plots ranked regional in Saint-Martin-sous-Montaigu, from high to low:
Position
283 m
elevation
15.4%
steep
NW
northwest
mid-slope
concave fold
| Elevation | 283 m 248 to 359 mign-rge-alti (5 September 2026) |
|---|---|
| Daytime temperature | −0.07 °C by day, relative to the village centre at 273 m, ± 0.05 °Cmeteo-france-quotidiennes (6 September 2026) · meteo-france-postes (6 September 2026) · meteo-france-lsh (6 September 2026) · ign-rge-alti (5 September 2026) |
| Slope | 15.4% 8.8°ign-rge-alti (5 September 2026) |
| Aspect | northwest 325°ign-rge-alti (5 September 2026) |
| On the slope | 37% mid slope, in a concave hollow, 265 m drains onto itign-rge-alti (5 September 2026) |
Bedrock
- 43%Oolitic limestone, marl and chailles (late Bathonian to Callovian) 165.5–161.5 million years
- 15%Oolithe blanche (Middle Bathonian) 167.5–166.5 million years
- 39%Bathonian oolite and fine-grained limestone 168–166 million years
- 3%Bajocian bioclastic limestone 169.5–168.5 million years
Not a borehole: ordered by age, thickness by share of surface.
In the glass. Plots where the decalcified clay with chailles dominates are often described as fresher and firmer. This is an observation from practice, probably via the lower pH and the stony top layer, not a measured relationship. (weak indication)
A mixed sequence of oolitic limestone, marl bands and chailles, siliceous nodules that grew in the lime mud during hardening. Chailles resemble flint but are less pure and more porous, with more lime in the siliceous mass. Where the limestone has dissolved at the surface, a decalcified clay remains in which the insoluble chailles lie loose; about 165.5 to 161.5 million years old.
For the vine. Mixed behaviour: the oolite drains readily, the marl bands retain water and the chailles form a stony, fast-warming top layer. Where the decalcified clay with chailles dominates, the soil is more acidic and poorer in active lime, which lowers the chlorosis risk. Rooting depth varies greatly over a few metres, depending on where a marl band lies.
Occurs on the plateaus and upper slopes of the Côte and in the Hautes-Côtes, where the decalcified clay with chailles lies at the surface.
BRGM geological map at 1:50,000. It tells vineyards apart, not plots within a vineyard. The link between rock and taste is indirect: soil depth, water and warmth do the work, and slope, vine age and the cellar do the rest. Units on that map: j3c-4, j3a, j3b, j2b.
brgm-bdcharm50 (4 September 2026)Sun and horizon
08:48
above the hill
18:39
behind the hill
9.8 h
sun at harvest
1.9 h
lost to the hill
Grey: sun up, but behind the hill or the vineyard's own slope.
Around harvest the sun rises here at 08:48 above the hill and disappears at 18:39 behind the hill: 9.8 hours of direct sun on a clear day. The ridge reaches 15.5° above the horizon to the south-southeast. The relief costs 1.1% of the irradiation from April to October, direct and diffuse together.
| Irradiation | −5.6% versus flat land 995 kWh/m² from April to October, 43% of it diffuseunder the average cloudiness of 2005 to 2023 (PVGIS-SARAH3, EU JRC); direct, diffuse and reflected light togetherign-rge-alti (5 September 2026) · ign-lidarhd-mnh (6 September 2026) · ign-bdforet-v2 (5 September 2026) · jrc-pvgis-sarah3 (10 September 2026) |
|---|---|
| Open sky | 97.1% of the sky the slope itself sees; the surrounding relief blocks the restign-rge-alti (5 September 2026) · ign-lidarhd-mnh (6 September 2026) · ign-bdforet-v2 (5 September 2026) |
Three reference days and the caveat
| rise | set | sun | day | |
|---|---|---|---|---|
| 21 June | 06:46 | 20:32 | 13.8 h | 15.9 h |
| 20 September | 08:48 | 18:39 | 9.8 h | 12.3 h |
| 21 December | 10:42 | 15:21 | 4.7 h | 8.5 h |
Computed from the IGN elevation model at 5 m: horizon in 36 directions up to six kilometres, sun position per minute, angle of incidence on the mean slope. Clear sky, with the tree canopy from the IGN forest inventory as a raised horizon (15 m closed forest, 5 m heath, trees within 60 m ignored), 34% of the far field is forest (BD Forêt), no buildings.
The irradiation loss does include clouds: the average of 2005 to 2023 (PVGIS-SARAH3, EU JRC), not any particular year.
Air and cold
34 m
above the lowest point
drains far away
cold air
a combe
46.8 ha flows past
| Cold air | 34 m high on the slope, cold air drains far awayign-rge-alti (5 September 2026) |
|---|---|
| Cold air passing through | 46.8 ha a combe, mean over the polygon 0.47 haign-rge-alti (5 September 2026) |
Planting
ESE-WNW
down the slope
1.11 m
between the rows
3%
vineyard in 1950
| Rows | ESE-WNW (118°) down the slope (27°), every 1.11 m, all rows parallelmeasured over 0.8 of 0.8 ha plantedign-bdortho (5 September 2026) |
|---|---|
| Vineyard in 1950 | 3% abandoned since: 0.40 haassessed over 51.5 ha on the 1950-1965 aerial photographign-photos-historiques-1950-1965 (6 September 2026) |
Climate over time
station LA ROCHEPOT, 417 m, 15.5 km away
growing season, April to October: 1951-1980: 14.1 °C, 1991-2020: 15.2 °C
Huglin index: 1951-1980: 1,528, 1991-2020: 1,726
last spring frost: 1951-1980: day 115, 1991-2020: day 108
raw daily series, not corrected for station breaks
The name
- garenne
- warren, an enclosed hunting ground of the lord where rabbits were kept. Work and use · Frédéric Godefroy, Dictionnaire de l'ancienne langue française (1881)
This is about the words, not about this plot: the same name can have arisen differently elsewhere.
Who owns land here
1.47 ha of 3.40 ha delimited is registered to a legal entity
- SOC CIVILE VITICOLE EMILE VOARICK28%
- COMMUNE DE SAINT MARTIN SOUS MONTAIGU15%
- LES CHASSEURS DE L'ORBIZE<1%
- private individuals or unknown57%
- 0.97 ha SOC CIVILE VITICOLE EMILE VOARICK SCEA · wine business · organic
- 0.50 ha COMMUNE DE SAINT MARTIN SOUS MONTAIGU COM · public
Private individuals or unknown: 1.93 ha.
Share of the delimited hectares. Only legal entities are public in France; everything else stays unnamed. From the public register of legal entities (DGFiP), as of 1 January 2025. The owner is not always the one who works the vineyard: tenancy is common.
Nearby lieux-dits
- Les Buffieres Regional · 600 m
- En Moronat Regional · 650 m
- Champ Martin Regional · 700 m
- En Anon Regional · 800 m
- Les Maladieres Regional · 900 m
- Les Jonchères Regional · 1.0 km
- Le Grand Champ Regional · 1.1 km
- Suzeau Regional · 1.1 km
In the same village, measured between label points. That does not say which ones border each other; the map shows that.
Where each figure comes from
- Classification
- The INAO delimitation per denomination, cut against the cadastral parcel. Only the INAO's own plans are legally binding; this map is informational.
- Area
- Computed on the sphere from longitude and latitude (turf.area), not in Lambert-93. For an appellation this is the union of the INAO polygons across commune boundaries, measured on the unclosed geometry; the fifteen metres used to close the outline for the map are not counted. For a climat it is the union of the cadastral lieu-dit polygons with that name.
- Planted
- Parcel area times vineyard cover, where cover comes from the IGN vegetation layer supplemented by the agricultural declaration. Checked against the customs harvest declarations: median deviation 5.1 per cent over a hundred appellations.
- Elevation
- Mean of the elevation-model cells whose centre falls inside the polygon, on a 5 m grid.
- Slope
- Per-cell slope from the elevation model using Horn's method, then averaged over the cells in the polygon.
- Aspect
- Vector mean of the per-cell aspect. A plain average would turn north-east and north-west into south.
- Sun at harvest
- Hours of direct sun on 20 September under a clear sky, with the horizon in 36 directions out to six kilometres and the height of woods and buildings on top of it. Canopy height is measured where LiDAR HD covers the area and estimated from BD Forêt where it does not; the panel states which of the two was used.
- Grape variety by appellation
- Per appellation and colour the permitted varieties from the approved cahier des charges; per appellation and tier the declared hectares of white and red from the customs harvest declaration (product codes). One colour permitted: the main variety of that colour. Two colours: from 85 percent of the hectares that colour applies, in between it is called mixed. Champagne: the dominant variety from the planted hectares per variety per commune from FranceAgriMer. Per polygon the dominant variety of its parts by area. Derived, not measured: the variety per plot exists only in the customs vineyard register, which is not public. In a two-colour appellation a single plot may carry the other variety. Customs withhold small appellations (statistical secrecy), in which case the split is missing.
- Bedrock
- The geological unit covering the largest share of the polygon, from the 1:50,000 geological map. At 1:50,000 the map separates one climat from another, but not what varies inside a climat.
- Organic
- Share of the area certified organic or in conversion, from the CartoBio plot register.