Italian Climbing Black Bean 'Super Marconi Grano Nero' – Seeds

(Phaseolus vulgaris) – Heirloom Italian Pole Bean

The ‘Super Marconi Grano Nero’ climbing bean is a traditional Italian variety known for its long, flat pods and striking black beans inside. Highly productive, vigorous, and climbing up to 2–3 meters, it requires staking or trellising. Its pods are tender and delicious when young, while the mature black beans can be dried and stored for hearty soups, stews, and traditional Italian dishes.

Key Features

• Type: Climbing pole bean (annual legume)

• Height: 200–300 cm with support

• Pods: Long, flat, tender, up to 20–25 cm

• Seeds: Black beans inside when mature

• Harvest: 65–75 days from sowing

• Special: Dual-purpose – eat fresh pods or dry beans

Ideal For

• Fresh harvesting as flat green beans

• Drying and storing beans for winter dishes

• Italian and Mediterranean cuisine

• Vertical gardening with trellises or poles

Sowing & Growing

• Sow outdoors: May–July, once soil warms (min. 15°C)

• Spacing: 50 cm between rows, 10–15 cm between plants

• Support: Needs poles, netting, or trellis

• Soil: Fertile, well-drained, rich in organic matter

• Sunlight: Full sun

• Watering: Consistent, especially during pod setting

Care Tips

• Harvest young pods regularly to encourage continuous production.

• Allow some pods to fully mature for drying black beans.

• Rotate crops yearly to maintain healthy soil.