This variety does need to be staked or caged.
Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that San Marzano is thought of as tender, so it is imperative to wait until temperatures are mild before planting out of doors. San Marzano requires a loamy soil with a ph of 5.0 - 6.0 - it grows best in moderately acidic soil to weakly acidic soil.Start indoors six weeks before last frost date.
Ensure a distance of 2.60 feet (80.0 cm) between seeds when sowing - look to sow at a depth of approximately 0.78 inches (2.0 cm). Soil temperature should be kept higher than 12°C / 54°F to ensure good germination.By our calculations, you should look at sowing San Marzano about 42 days before your last frost date.
Transplant out when around 15cm (6 inches) high. Plant to first set of leaves to promote strong root growth.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as San Marzano is a tender plant.Italian heirloom, from a small town of the same name near Naples, Italy, these were first grown in volcanic soil in the shadow of Mount Vesuvius. 1
The story goes that the first seed of the San Marzano tomato came to Campania in 1770, as a gift from the Kingdom of Peru to the Kingdom of Naples, and that it was planted in the area that corresponds to the present commune of San Marzano. 1
Cento, Nina, La Bella, Solinia, Vantia, Strianese, san marzono.
Nina San Marzano, Cento San Marzano San Marzano La Bella, Solinia San Marzano, Vantia San Marzano, San Marzano Strianese.
1 http://en.wikipedia.org/wiki/San_Marzano_tomato