Red Grano Onion Seeds – Heirloom Sweet Red Onion, 50 Seeds

Red Grano is a popular heirloom onion variety prized for its mild, sweet flavor and attractive red-purple skin. These short-day onions produce medium-to-large, globe-shaped bulbs with crisp, white-and-red tinged flesh that is excellent for fresh slicing, salads, sandwiches, and mild cooking. Red Grano onions store reasonably well and are a favorite among home gardeners for their versatility and reliable performance.

Grown from seed, Red Grano onions are a rewarding crop for both beginner and experienced gardeners. They can be started indoors in late winter or sown directly in the garden in early spring, depending on your climate. With proper care, these onions will mature into flavorful bulbs that enhance any vegetable garden and kitchen.

Plant Features

• Heirloom sweet red onion variety with mild flavor
• Produces medium-to-large, globe-shaped bulbs
• Red-purple skin with crisp, white-and-red tinged flesh
• Excellent for fresh eating, salads, and cooking
• Short-day onion suitable for southern climates

Growing Information

• Botanical Name: Allium cepa
• Plant Type: Biennial grown as annual
• Sunlight: Full sun
• Soil: Well-drained, fertile soil
• Water Requirements: Moderate; keep soil evenly moist
• Growth Habit: Upright, bulb-forming
• USDA Hardiness Zones: Grown as annual in most zones; short-day variety best suited to zones 7-9
• Bloom Season: Not grown for blooms; harvest bulbs in summer
• Mature Height: 18-24 inches
• Germination Requirements: 7-14 days at 65-75°F
• Spacing: 4-6 inches apart in rows 12-18 inches apart

Planting & Care

For best results, start Red Grano onion seeds indoors 8-10 weeks before the last frost date. Sow seeds 1/4 inch deep in a seed-starting mix and keep moist until germination. Harden off seedlings before transplanting outdoors. Alternatively, direct sow seeds in early spring as soon as the soil can be worked. Onions prefer full sun and well-drained, fertile soil with a pH of 6.0-7.0. Keep the area weed-free and water regularly to maintain even moisture, but avoid overwatering.

As bulbs begin to form, reduce watering slightly to encourage proper maturation. Stop watering when the tops start to yellow and fall over. Harvest bulbs when the necks are dry and the skins are papery. Cure onions in a warm, dry, well-ventilated area for 2-3 weeks before storing in a cool, dry place. With proper curing, Red Grano onions can store for several months.

What's Included

50 Red Grano onion seeds.