Onions receive their cue to start bulbing from day length, and to grow onion plants that form full-size bulbs by harvest time it is important to choose varieties adapted to the maximum growing season of day length in your region. Johnny's offers a selection of full-size onions varieties for each of the three day-length adaptations: long-day, intermediate-day, and short-day. Use our Full-Size Onion Comparison Chart to select the best varieties for your region, and to compare bulb size, color, shape, adaptability, storage potential, and other distinguishing characteristics.
The best red onion for southern growers.
New! The best red onion for southern growers.
Widely adapted Walla Walla type for growing farther South.
Widely adapted, mid-day.
The famous juicy, sweet regional favorite from Walla Walla, Washington.
The famous, mild yellow variety from Walla Walla, WA.
Early yields of red onions without sacrificing size.
Early yields of red onions.
A classic mild yellow onion with excellent size potential.
Huge, mild onions.
Big, mild white onions from a widely-adapted day-neutral variety.
Big, mild white onions.
Superior red color, long storage.
Superior red color, long storage. Organic seed with NOP-compliant pellet.
Yellow short-day onion for the South; uniform with good bolt tolerance.
Short-day yellow with excellent uniformity and good bolt tolerance for the South.
Extremely long-storage yellow onion.
Extremely long storage yellow onion. Conventional seed with NOP-compliant pellet.
Attractive, large, slightly-flattened bulbs with light-brown skins.
Attractive, large, slightly-flattened bulbs with light brown skins.
Disease-resistant, yellow storage type with very large size potential.
Disease-resistant, yellow storage type.
Adaptable intermediate-day onion, very uniform and high yielding.
Adaptable intermediate-day onion.
Unique pink specialty onion with excellent storage potential.
Unique pink specialty onion.