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Sterling Onion
Sterling Onion

Sterling Onion Plant Bundle

$1799
  • Sterling Onion – A hybrid, long-day variety with colossal, globe-shaped, white bulbs.
  • Strong, vigorous tops protect bulbs from sun damage as they mature.
  • 95 days to maturity.
  • Allium cepa.
  • 50, 150, 450, 1,500 plant bundle variations
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    • Product appearance may vary from images.
Due to strict California Department of Food and Agriculture (CDFA) regulations and quarantine protocols, we are no longer able to ship onion plants to California.

This item qualifies for Free USA Shipping

Orders $99+ get Free USA Shipping

Description

Sterling Onion is a hybrid, long-day onion variety that produces jumbo to colossal onions with a shiny, white exterior. This white onion variety is globe-shaped with a mildly pungent onion flavor. The plants are vigorous and produce strong, tall tops to protect the onion bulbs from sun damage as they mature. Sterling Onion has mid to long-term storage potential and is a great option for gardeners and small-scale farmers in long-day growing areas.

Long-day Onions

Plant in spring for a mid-summer harvest

Start the bulbing process when day length reaches 14-16 hours

Growing Information

Sterling Onion Planting Information

Planting Method: transplant

When to Plant: early spring

Planting Depth: 1/4″

Seed Spacing: 4″

Row Spacing: 12-18″

Days to Maturity: 95

Disease Resistance: Basal Rot, Pink Root

Additional Information

Onions are heavy feeders and will require significant nutrient inputs throughout their lifespan. We recommend feeding them with our 20-20-20 and Calcium Nitrate fertilizers. Fertilize with 20-20-20 shortly after transplanting. The phosphorous and potassium in the 20-20-20 fertilizer will help to promote solid root development, while the nitrogen will promote vegetative growth. Once transplants are established, we recommend side-dressing or injecting with our Calcium Nitrate fertilizer. Side dress or inject 1 cup per 20 feet of linear row every 3-4 weeks after transplanting.