San Marzano Tomato Seeds, Heirloom Variety Rich Flavor Perfect for Home Gardens

San Marzano Tomato Seeds – Growing Guide

Key Attributes

Product Name: San Marzano Tomato Seeds
Type: Heirloom, open-pollinated
Growth Habit: Indeterminate (continues producing throughout the season)
Mature Size: 5-6 feet tall
Days to Maturity: 75-85 days
Fruit Characteristics: Elongated, deep red tomatoes with thick flesh and minimal seeds
Flavor Profile: Rich, sweet, and slightly tangy, ideal for sauces and canning
Hardiness: Warm-season crop, requires frost-free conditions
Light Requirements: Full sun (6-8 hours daily)
Soil Requirements: Well-drained, fertile soil (pH 6.0-6.8)
Uses: Sauces, pastes, soups, and fresh eating

Planting Instructions

Indoor Sowing (Recommended for Early Start)

• Start seeds indoors 6-8 weeks before the last expected frost.
• Plant seeds ¼ inch deep in nutrient-rich, well-draining soil.
• Maintain soil temperature between 70-85°F (21-29°C) for optimal germination (7-14 days).
• Transplant outdoors when seedlings are 6-8 inches tall and after the danger of frost has passed.

Outdoor Sowing (For Warmer Climates)

• Direct sow only when nighttime temperatures remain above 55°F (13°C).
• Space plants 18-24 inches apart in rows 3-4 feet apart.

Care & Maintenance

• Watering: Keep soil evenly moist but avoid waterlogging. Water deeply at the base of the plant.
• Support: Use stakes, cages, or trellises to support vigorous vine growth.
• Fertilization: Apply a balanced fertilizer every 3-4 weeks, switching to a low-nitrogen fertilizer once fruiting begins.
• Pruning: Remove lower leaves and suckers for better airflow and higher yields.
• Mulching: Apply mulch to retain moisture and suppress weeds.

Harvesting

• Harvest when tomatoes turn deep red and slightly firm to the touch.
• Pick regularly to encourage continued production.
• Ideal for fresh eating, cooking, or preserving.

Pest & Disease Control

• Common Pests: Aphids, hornworms, and whiteflies—use neem oil or insecticidal soap.
• Common Diseases: Blossom end rot, fusarium wilt, and blight—ensure proper spacing and avoid overhead watering.