How to prune 'san marzano' tomato

Throughout the growing season from transplant onward. Remove suckers at the joint between stem and branch while still small. Maintain a single leader tied vertically for maximum productivity. Strip lower foliage to 30 cm (12 in) from soil level as the season progresses.

Every 7–10 days during the growing season. 'San Marzano' is an indeterminate paste tomato that benefits from consistent suckering to maintain one or two leaders. Regular pruning improves airflow, reduces blight risk, and concentrates the plant's energy into its classic elongated fruits. Without pruning the plant becomes dense and disease-prone, reducing yield quality.

Remove suckers at the joint between stem and branch while still small. Maintain a single leader tied vertically for maximum productivity. Strip lower foliage to 30 cm (12 in) from soil level as the season progresses.