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Allium cepa 'Red Candy Apple'
Red Candy Apple Onion
F1 hybrid cultivar; the species A. cepa is native to Central Asia
Overview
Allium cepa 'Red Candy Apple' is Red Candy Apple onion, a biennial grown as an annual for bulb production, 18-24 inches (45-60 cm) tall and 6-8 inches (15-20 cm) wide. Globe-shaped bulbs 3-4 inches (7-10 cm) diameter with burgundy to deep mahogany papery outer skins and white flesh with concentric purple-tinged rings. A red sweet onion: reduced sulfur compounds — mild enough to eat raw. The anthocyanin pigments (burgundy-red skin and purple ring tinting) are partially retained when cooked. Blue-green hollow tubular foliage. In the amaryllis family (Amaryllidaceae). An intermediate-day onion: bulbs at 12-14 hours of daylight (latitudes 32-42°N) — wider geographic range than long-day types. F1 hybrid — seed does not produce true to type. Stores 2-4 months — shorter than pungent storage reds like 'Red Wing' (6-8 months) due to the higher water content of sweet types. Start seed indoors 10-12 weeks before last frost. Harvest when 50-75% of tops have fallen and yellowed (110-130 days from transplant). Cure 2-3 weeks. All Allium contain thiosulfates: toxic to dogs, cats, and horses (Heinz body anemia). Onion maggot and thrips are primary pests. Deer-resistant. Full sun. Annual. Growth rate is moderate.
Native Range
F1 hybrid cultivar. The species A. cepa is native to Central Asia (Iran, Afghanistan, Pakistan).Suggested Uses
Grown in vegetable gardens and containers of at least 3 gallons (11 L). Red sweet onion — mild for raw eating with purple-ringed interior. Intermediate-day type — wider geographic range than long-day. Stores 2-4 months. F1 hybrid. Toxic to pets. Deer-resistant. Annual.How to Identify
Appearance
Size & Dimensions
Height1'6" - 2'
Width/Spread6" - 8"
Reaches mature size in approximately 1 years
Bloom Information
Biennial: flowers in the second year if overwintered — white to pale pink spherical umbels. Grown as an annual for bulb production. Cut flower scapes at the base if they appear.Detailed Descriptions
Flower Description
White to pale pink spherical umbels — only if allowed to bolt; undesirable in bulb productionFoliage Description
Blue-green, hollow tubular, 0.5-0.75 inch (12-18 mm) diameter; yellows at maturityGrowing Conditions
Sun Requirements
Requires 6-12 hours of direct sunlight daily
• 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
Full sun (6+ hours). Well-drained fertile soil pH 6.0-7.0. Intermediate-day onion — 12-14 hours daylight (latitudes 32-42 degrees N). Start seed 10-12 weeks indoors. Consistent moisture during bulb swelling. Reduce watering as tops yellow. Stores 2-4 months. F1 hybrid. All Allium toxic to pets. Deer-resistant. Annual.Pruning
Cut flower scapes at the base if they appear. Do not cut green foliage during growth. Harvest when 50-75% of tops have fallen. Trim tops to 1 inch (2.5 cm), roots to 0.25 inch (6 mm). Cure 2-3 weeks.Maintenance Level
lowContainer Growing
✓ Suitable for container growing
Minimum container size: 3 gallons
⚠️ Toxicity Warning
Toxic to petsPlanting Guide
Planting Methods & Timing
Planting Method
both
Indoor Start
10 weeks before last frost
Direct Sow Timing
Early spring 2-4 weeks before last frost
Days to Maturity
110–130 days
Plant Spacing
4 inches