Giallo De Summer Tomato

Start seeds indoors 6 to 8 weeks before your last spring frost. Keep soil temperature between 70 and 80 degrees Fahrenheit for germination. Transplants are ready when they've developed their second true leaf set, typically 3 to 4 weeks after sowing.

Harden off seedlings over 7 to 10 days before moving them to the garden. Transplant outdoors after all frost danger has passed and soil has warmed to at least 60 degrees Fahrenheit. Space plants 18 inches apart in rows spaced 36 inches apart. Bury transplants deeper than their pot depth to encourage a stronger root system.

Harvest when the fruit reaches full size and has turned from pale yellow to a deeper golden-yellow or pale orange color. Gently squeeze to check for slight give, indicating ripeness. Harvest in the morning when temperatures are cooler, using a gentle twist or cutting with pruners to avoid damaging the plant. Ripe fruit will taste best but will continue to ripen after picking if kept at room temperature.

As an indeterminate variety, Giallo De Summer will grow and produce fruit until frost, so selective pruning helps direct energy to fruit production and improves air circulation. Remove suckers (shoots that grow between the main stem and branches) on the lower portion of the plant up to the first flower cluster. Prune lower leaves once fruit has set on the lower trusses to improve airflow and reduce fungal disease pressure. Avoid heavy pruning, which can expose fruit to sunscald.