01
Sandy and loose soils (from coarse marine deposits, weakly consolidated)
Where: Vinchio, Cortiglione, Incisa Scapaccino, Mombercelli, Mombaruzzo
Features: These soils are low in organic matter and modest in fertility, with limited capacity to retain water and moisture. Due to their sandy texture, they warm quickly in spring, leading to early bud break. Natural irrigation is limited, and in particularly hot or dry years, the vines undergo water stress, resulting in earlier harvests and smaller yields. The resulting wines are elegant, with lighter colour tones (purplish-red), lower structural intensity, and more delicate, refined aromas.
Impact on the wines: Light, fresh wines with less imposing structure but marked elegance – ready to drink young.
02
Silty-loam and sandy-loam soils (from fine or coarse marine deposits, weakly consolidated)
Where: Castelnuovo Calcea, Agliano Terme, Mombercelli, Nizza Monferrato, Castelnuovo Belbo, Mombaruzzo
Features: These soils are moderately fertile and compact, with a better capacity for moisture retention than sandy soils. The sand content still allows the surface to warm quickly, promoting early bud break. The combination of silt and sand results in more intense colour tones and a moderate structure. These soils cope better with drought, and in warm years, harvests occur early but are never excessive.
Impact on the wines: Wines with moderate structure, more intense and fruit-forward aromas, and good ageing potential. Well suited to express the balance between freshness and intensity.
03
Silty-loam and clay soils (from fine marine deposits, weakly consolidated)
Where: Agliano Terme, Moasca, San Marzano Oliveto, Castel Rocchero, Castel Boglione, Nizza Monferrato
Features: Clay soils are compact and mineral-rich, with strong water and heat retention. These characteristics help vines withstand dry, hot periods and allow them to ripen slowly and steadily. Depth is generally good, though the presence of limestone may limit the absorption of certain nutrients. The resulting wines are deeply coloured (ruby red), with complex aromas and firm structure, ideal for ageing.
Impact on the wines: Structured wines with good aromatic complexity and solid alcohol content – well suited to long ageing. Harvests are later than on other soils but bring more generous yields and higher quality.
04
Sandy-loam and silty soils (from coarse, consolidated marine deposits)
Where: Calamandrana, Castel Boglione, Rocchetta Palafea
Features: These soils combine sand and silt, offering good depth and medium moisture retention. Though not among the most fertile, they provide strong resistance to drought and high temperatures. Their structure supports balanced grape ripening, though harvests tend to occur earlier than on clay-rich soils. Fertility is moderate, and organic matter retention is low. The resulting wines are elegant, moderately intense, and with solid alcohol levels.
Impact on the wines: Balanced wines with a fine structure – enjoyable in youth, but with ageing potential.