Organic 'Red Geneva' Onion
Organic 'Red Geneva' onion (Allium cepa) from the seed company Gaia, a flattened red onion with remarkable storage qualities
The 'Red Geneva' onion forms flattened bulbs of a bright, vibrant red , measuring 2.5 to 3.5 inches in diameter. A heritage variety from the Sativa Rheinau selection, it matures more slowly than other red onions but is distinguished by its excellent storage capacity , lasting up to 4 to 5 months . Its firm, juicy flesh makes it a versatile onion for salads, marinades, roasts, and stews. Robust, hardy, and reliable, it remains a popular choice for gardeners who want a high-quality red onion with a long shelf life.
Companion plants : Brassicaceae, Carrot, Tomato, Lettuce, Beetroot, Parsnip, Chamomile, Rose, Strawberry
Nefarious plants : Beans, Peas, Asparagus
Spread/Habit : Flattened bulbs, upright foliage
Plant height : 30 to 45 cm
Quantity per packet : 100 seeds
Certification : Certified organic by Ecocert Canada
Special features : Flattened red bulb, excellent storage (4–5 months), slow ripening, 2.5–3.5 in. size
Leaf color : Bluish-green
Texture/flavor : Firm, juicy flesh, sweet and tangy taste
Cold tolerance : Down to -12°C
Farming method
Start sowing 10 to 12 weeks before transplanting. Sow 3–6 mm deep and, when the seedlings reach 12.5 cm , prune them back to 2.5 cm to encourage a thicker stem. Transplant to full sun (level 3) and water regularly (level 3). Space 7–10 cm apart for medium bulbs and 10–15 cm for large ones, with 45–75 cm between rows. Germination occurs in 6–12 days at temperatures between 7–32 °C (optimum 20–25 °C).
Harvesting and preservation
Harvest when the leaves have dried and shrunk . Allow to ripen in the field for 3 to 5 days , or dry in a greenhouse at 23–26°C with 80% humidity. To prolong dormancy, cool and dry slowly. Ideal storage in a root cellar: 0–1°C , 65–70% humidity.
Usage ideas
• In salads for their vibrant red color
• Candied and roasted thanks to their juicy flesh
• For crunchy red pickles
• In stews for a caramelized sweetness
• As stuffed onions or as a grilled side dish
The 'Red Geneva' onion combines a vibrant red aesthetic with robustness and exceptional storage life . A reliable heirloom variety, perfect for discerning gardeners and kitchens that appreciate a versatile and long-lasting red onion.
