(Intermediate – Long Day) Highlander Onion Plants

Bundle contains ~ 75 plants.

Highlander is a rugged, high-performance hybrid yellow onion developed for northern growers facing tough conditions, delivering large, uniform globe-shaped bulbs with tight golden wrappers, firm texture, and excellent keeping quality. This long-day variety stands out for its strong disease resistance and adaptability, producing reliable yields of pungent-sweet onions ideal for fresh chopping, storage, roasting, or market sales. Each bundle contains approximately 75 healthy, premium, non-GMO plants grown with natural and regenerative practices.

Key Details at a Glance

• Day length: Long-Day (best in zones 37)
• Days to maturity: 95105 from transplant
• Mature bulb size: 35 inches
• Storage life: 68 months when cured
• Bundle size: Approximately 75 bare-root plants

Why Grow Highlander?

• Resistant to almost everything High tolerance to downy mildew, pink root, and Fusarium; thrives in challenging soils.
• Adaptable performer Handles cool, variable northern weather with consistent large bulbs.
• Long storage Firm necks and thick skins keep onions fresh into late winter.
• Market-ready Uniform shape, good size, and clean finish for high pack-out and sales.

Growing Tips Direct-transplant as soon as soil can be worked in early spring (soil 40F). Space 46 apart in rows 1218 apart. Provide full sun, consistent moisture (1 weekly), and occasional nitrogen boosts. Mulch to retain moisture and suppress weeds. Harvest when 5070% of tops yellow and fall over; cure in a dry, airy spot for 23 weeks.

Standard Information

• Plant type: Bulbing onion (Allium cepa)
• Sun: Full sun (68+ hours)
• Soil: Well-drained, fertile loam; pH 6.07.0
• Water: Consistent, especially during bulb formation
• Hardiness zones: 39 (bulbs form best in long-day regions)

Origin & Quality All plants are grown and shipped as bare-root, dormant starts in biodegradable wrap from Sunbelt Transplants, a trusted leader in premium onion transplants based in the heart of U.S. onion country.

Disclaimer Although these onions are grown by farms that are certified organic, we are not allowed to say it is Certified due to the rule 7 CFR 205.2. The Farm On Central is in the process of becoming a Certified Handler for the 2026 season. All product provided for the 2026 season will be certified.