Radish 'Gigante siculo' - Raphanus sativus

1000 seeds

Radish 'Gigante Siculo' (Sicilian Giant) is a traditional Italian heirloom variety that produces large, round to slightly flattened white roots with crisp, juicy flesh and a mild, sweet flavor. Despite its large size, it remains tender when harvested at the proper stage. It is excellent for fresh salads, roasting, pickling, and cooking. In the Gulf region, it grows best during the cool season.

Best Planting Time

• October to February (recommended)
• Sow during the cool season for the best root quality.
• Avoid sowing during the hot summer months.

Seed Preparation

• No soaking is required.
• Use fresh, high-quality seeds.
• No cold stratification is needed.

Soil Preparation

Radishes grow best in loose, fertile, stone-free, well-drained soil.

Recommended mix:

• 40% Sandy garden soil
• 30% Well-rotted compost
• 20% Coco peat
• 10% Perlite or coarse sand

Ideal soil pH:

• 6.0–7.0

Sowing Method

• Direct sowing is recommended.
• Sow seeds 1–1.5 cm deep.
• Place 1 seed per hole.
• Thin seedlings after emergence if necessary.

Temperature & Light

• Ideal germination temperature: 12–22°C
• Ideal growing temperature: 15–25°C
• Requires 6–8 hours of direct sunlight daily.
• In warmer Gulf areas, light afternoon shade improves root quality.

Watering

• Keep the soil evenly moist throughout growth.
• Water whenever the top 2–3 cm of soil begins to dry.
• Irregular watering may cause roots to crack or become woody.
• Avoid waterlogging.

Germination Time

• 4–8 days

Plant Spacing

• 15–20 cm between plants.
• 30–40 cm between rows.

Harvest

• Harvest 45–65 days after sowing.
• Harvest when roots reach 10–15 cm in diameter for the best balance of size, tenderness, and flavor.
• Do not leave mature roots in the soil too long, as they may become fibrous.

Fertilization

• Mix compost into the soil before planting.
• Apply a light balanced fertilizer once after seedlings are established.
• Avoid excessive nitrogen, which encourages leafy growth rather than root development.

Gulf Climate Tips

• Grow only during the cool season.
• Water early in the morning.
• Mulch lightly to keep soil cool and reduce evaporation.
• Keep soil consistently moist for smooth, crack-free roots.
• Monitor for aphids, flea beetles, cabbage worms, root maggots, and downy mildew.
• 'Gigante Siculo' performs well in home gardens, raised beds, containers, and vegetable gardens throughout the Gulf.