Overview
Allium cepa 'Red Candy Apple' is a distinctive sweet onion cultivar renowned for its vibrant deep red outer skin and exceptionally mild flavor profile. This short-day onion variety produces medium-sized, flattened to globe-shaped bulbs that typically measure 3-4 inches in diameter when fully mature. The bulbs feature striking burgundy-red papery outer layers that intensify in color with proper curing, while the interior flesh remains crisp and white, arranged in the characteristic concentric ring pattern of all onions.
The plant develops as a typical bulbous annual, emerging from a single planted bulb or transplant to produce a cluster of hollow, tubular leaves that reach 18-24 inches in height. The foliage displays an attractive blue-green coloration and maintains the classic onion appearance with slender, pointed shoots that gradually thicken as they mature. When allowed to complete its full growth cycle, Allium cepa 'Red Candy Apple' will produce spherical umbels of small white flowers on tall stalks, though commercial and home cultivation typically involves harvesting the bulbs before flowering occurs to maximize bulb quality and storage potential.
Native Range
Allium cepa originates from the mountainous regions of Central Asia, particularly areas that now encompass Afghanistan, Iran, Pakistan, and surrounding territories. This species has been cultivated by humans for over 5,000 years, spreading from its native range throughout the world via trade routes and agricultural expansion. The 'Red Candy Apple' cultivar is a modern horticultural development selected for specific traits including sweetness, color intensity, and reduced sulfur content.Suggested Uses
culinary gardens, vegetable beds, raised beds, container growing, companion plantingHow to Identify
Growing Conditions
Sun Requirements
• Full Sun: 6+ hours of direct sunlight
• Partial Shade: 3-6 hours of direct sunlight
• Full Shade: Less than 3 hours of direct sunlight
Care & Maintenance
Care Guide
Allium cepa 'Red Candy Apple' requires consistent moisture management throughout its growing season for optimal bulb development. Provide regular watering, particularly during the critical bulb formation period in late spring and early summer, but avoid overwatering which can lead to bulb rot and fungal issues. Apply a balanced fertilizer at planting time and side-dress with nitrogen-rich fertilizer when plants reach 6 inches in height to support vigorous leaf growth. As the growing season progresses, reduce watering frequency when the tops begin to yellow and naturally fall over, signaling that bulb maturation is complete. Maintain excellent weed control throughout the growing period, as onions have shallow root systems and compete poorly with weeds for nutrients and moisture.Pruning
Allium cepa 'Red Candy Apple' requires minimal pruning intervention during its growth cycle. Remove any flower stalks (scapes) that emerge to redirect the plant's energy into bulb development rather than seed production. Resist the temptation to cut back green foliage prematurely, as the leaves continue photosynthesizing and contributing essential nutrients to bulb growth until they naturally begin to yellow and fall over. Harvest timing is optimal when 50-80% of the tops have naturally collapsed, indicating bulb maturity and readiness for curing and storage.Maintenance Level
lowContainer Growing
✓ Suitable for container growing