Onion Seeds – Allium cepa Vegetable Plant

Onion is a cool-season bulb-forming vegetable grown for its rounded underground bulbs and upright green foliage. Plants develop hollow leaves and gradually form bulbs as they mature. This species is suitable for garden beds, raised beds, and field cultivation. Onion performs best in full sun with fertile, well-drained soil and consistent moisture, making it a widely grown crop for spring and fall planting in a variety of climates.

Features

• Cool-season bulb-forming vegetable
• Produces rounded underground bulbs
• Upright green foliage growth habit
• Suitable for garden beds and field cultivation
• Adapted to cool and moderate growing conditions
• Performs well in fertile, well-drained soils
• Suitable for spring and fall planting

Specifications

• Scientific Name: Allium cepa
• Common Name (US): Onion
• Seed Type / Variety: Allium cepa
• Growth Habit: Bulb-forming biennial grown as annual
• USDA Zones: 3-10
• Planting Season: Spring and Fall
• Growing Season: Spring through Summer
• Sowing Season: February-April and September-October
• Germination Time and Conditions: 7-14 days at 60-75°F (16-24°C)
• Sunlight Requirements: Full sun
• Soil Requirements: Fertile, well-drained loamy soil rich in organic matter
• Watering Needs: Regular watering; keep soil evenly moist during bulb development
• Mature Plant Size: 12-24 inches tall, 4-6 inches spread
• Plant Spacing: 4-6 inches apart