San Marzano is the classic Italian plum tomato, grown for generations near Naples and considered the gold standard for sauces. The elongated, pointed fruits develop dense, meaty flesh with very few seeds and low water content, producing rich, velvety passata that no other variety can match.
This indeterminate variety is highly productive and rewards careful growing with an abundant late-summer harvest. When fully ripened on the vine, San Marzano delivers the balanced sweetness and gentle acidity that define authentic Italian cooking.
ðą Sowing: February to April (indoors)
âïļ Light: Full sun, sheltered position
ð§ Water: Regular, consistent watering
ðĄïļ Germination: 7 to 14 days at 18 to 24°C
ð Height: Up to 180 cm (cordon), space 50 to 60 cm apart âģ
Harvest: August to September
ðŋ Growing tips for Ireland Start seeds early under protection in February or March.
Irish summers are shorter, so an early start is essential. Provide strong support and remove side shoots regularly. Feed weekly once flowering begins to maximise fruit quality. A polytunnel or south-facing wall gives the best results in Irish conditions.
