Full-Size Onions
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.
Done
New
Organic long-day storage onion.
New! Organic long-day storage onion.
104 Days
New
Johnny's Exclusive
Our superior strain of this classic, long-day Italian OP.
New! Our superior strain of this classic, long-day Italian OP.
100 Days
New
Vibrant long-day red storage onion.
New! Vibrant long-day red storage onion.
115 Days
New
Vibrant long-day red storage onion.
New! Vibrant long-day red storage onion. Organic seed with NOP-compliant pelleting.
115 Days
New
A classic mild yellow onion with excellent size potential.
Now available organic! Huge, mild onions. Organic seed with NOP-compliant pelleting.
110 Days
New
Downy mildew resistance for a wider range of latitudes.
New! Downy mildew resistance for a wider range of latitudes.
100 Days
The famous juicy, sweet regional favorite from Walla Walla, Washington.
The famous, mild yellow variety from Walla Walla, WA.
Approx 300 late-summer sown and wintered over; 125 spring sown
The best onion for overwintering in the North.
The best onion for overwintering in the North.
90 spring sown Approx 270 fall sown in the North
Attractive short-day; best red onion for overwintering in the North.
Attractive short-day; the best red onion for overwintering in the North.
100 spring sown Approx 160 fall sown in the South
Classic yellow OP strain, dependable and productive early onion.
Classic yellow OP strain.
98 Days
Extremely long-storage yellow onion.
Extremely long storage yellow onion.
104 Days
AAS (All-America Selections) Winners
Big, mild white onions from a widely-adapted day-neutral variety.
Big, mild white onions.
109 Days
Attractive, large, slightly flattened bulbs with light-brown skins.
Attractive, large, slightly flattened bulbs with light brown skins.
105 Days
The best onion for overwintering in the North.
The best onion for overwintering in the North. Conventional seed with NOP-compliant pellet.
90 spring sown Approx 270 fall sown in the North
Short-day onion with excellent color and disease resistance.
Short-day onion with excellent color and disease resistance.
160 from fall planting
Downy mildew resistant storage onion.
Downy mildew resistant storage onion.
108 Days
Extremely long-storage yellow onion.
Extremely long storage yellow onion. Conventional seed with NOP-compliant pellet.
104 Days