Onion Red Burgundy (Allium cepa) is an heirloom, open-pollinated, short-day onion variety known for its deep red-purple skin and mild, slightly sweet flavor. It produces medium to large, firm, flat-shaped bulbs with white and red-ringed flesh, making it an excellent choice for fresh eating, salads, grilling, and pickling. This variety thrives in warm climates but can be grown as an annual in cooler regions.

How to Grow Red Burgundy Onion

Sowing and Germination

• Starting Indoors: Start seeds 8–10 weeks before the last frost indoors in seed trays. Sow seeds 1/4 inch deep in well-draining soil. Maintain temperatures of 65–75°F for optimal germination.
• Direct Sowing: In warm climates, sow seeds directly as soon as the soil reaches 50°F in early spring or late fall for a winter crop.
• Bulb Sets: Plant onion sets 1 inch deep and 4 inches apart for quicker growth.

Transplanting:

• Harden off seedlings for 7–10 days before transplanting.
• Space plants 4–6 inches apart in rows 12–18 inches apart for proper bulb development.

Soil Requirements:

• Prefers well-drained, sandy, or loamy soil with a pH of 6.0–7.0.
• Enrich soil with compost or organic matter before planting.

Sunlight:

• Requires full sun (at least 6–8 hours daily).

Growing Red Burgundy Onion

Watering:

• Provide consistent moisture, especially during bulb formation. Water about 1 inch per week, increasing during dry periods.
• Avoid overwatering to prevent root rot and fungal diseases.

Mulching:

• Apply a thin layer of mulch to retain moisture and suppress weeds.

Fertilizing:

• Use a nitrogen-rich fertilizer every 2–3 weeks during early growth to promote leaf development.
• As bulbs begin to form, switch to a low-nitrogen, phosphorus, and potassium-rich fertilizer to encourage bulb growth.

Pest and Disease Management:

• Watch for thrips, onion maggots, and aphids; use neem oil or insecticidal soap as needed.
• Ensure good air circulation to prevent fungal diseases such as downy mildew and onion rot.
• Practice crop rotation yearly to reduce soil-borne diseases.

Fast Facts

• Latin Name: Allium cepa
• Type: Heirloom, Open-Pollinated, Short-Day Onion
• USDA Zones: 3–12
• Days to Germination: 7–14 days
• Days to Maturity: 95–120 days
• Sunlight: Full Sun
• Spacing: 4–6 inches apart
• Soil pH: 6.0–7.0
• Color: Deep Red-Purple

How and When to Harvest Red Burgundy Onion

• Harvest when tops start to yellow and fall over, usually after 95–120 days.
• Carefully lift bulbs from the soil and cure for 2–3 weeks in a warm, dry, shaded area with good airflow.
• Once fully cured, trim roots and foliage and store in a cool, dry place. Properly cured onions can be stored for several months.

Red Burgundy Onion Seed Saving

• As a biennial, Red Burgundy onions produce seeds in their second year.
• Allow some plants to flower and go to seed. Once seed heads dry, collect them and store seeds in a cool, dry place for up to 3 years.

Red Burgundy Onion is a stunning and flavorful addition to any garden. Its mild, crisp texture and beautiful color make it perfect for fresh dishes and storage. With proper care, you’ll enjoy a bountiful harvest of these vibrant onions throughout the season! 🌱