Setup, Compatibility & Care
Sowing: Start seeds indoors 6-8 weeks before the last frost, or sow directly outdoors in warmer climates after the danger of frost has passed. Use a good quality seed compost and sow thinly at a depth of 0.5cm (1/4 inch).
Germination: Keep compost moist and warm (ideally 18-24°C / 65-75°F). Germination typically takes 7-14 days.
Transplanting: Once seedlings have developed their first true leaves and the risk of frost has passed, transplant them into larger pots or directly into their final growing position.
Location: 'Siderno' thrives in a sunny, sheltered spot. It performs well in greenhouses or outdoors with adequate support.
Support: As this is a strong-growing variety, provide sturdy stakes, cages, or a trellis for support as the plants grow.
Watering & Feeding: Water consistently, especially during dry periods, and feed regularly with a tomato-specific fertilizer once the first fruits begin to form.
Care: Remove 'suckers' (shoots that grow in the V between the main stem and a leaf branch) to encourage better fruit production and air circulation. Protect from pests and diseases.