Walla Walla onion seeds - Vegetable Plant

Walla Walla Onion is a long day bulb variety known for its large round bulbs and upright leafy growth. It develops strong plants suitable for garden beds and raised beds, producing well sized bulbs under favorable growing conditions. This variety adapts to cool to moderate climates and performs best in full sunlight with well drained fertile soil. It is typically grown during the cooler growing seasons for proper bulb development.

Features

• Produces large round bulbs with upright foliage
• Suitable for cool to moderate climates
• Suitable for garden beds and raised beds
• Performs best in full sunlight conditions
• Requires consistent moisture for proper bulb formation

Specifications

• Scientific name: Allium cepa
• Common name (US): Onion
• Seed type / variety: Walla Walla
• Growth habit: Biennial grown as annual
• USDA zones: 5 to 9
• Planting season: Fall and early spring
• Growing season: Winter to early summer
• Sowing Season: Fall September to November Spring January to February
• Germination time and conditions: 7 to 14 days in cool soil 10 to 25 C
• Sunlight requirements: Full sun
• Soil requirements: Well drained fertile soil rich in organic matter
• Watering needs: Moderate keep soil consistently moist
• Mature plant size: 30 to 60 cm height 8 to 12 cm bulb size
• Plant spacing: 10 to 15 cm apart