Full-Size Onion Seeds & Plants | Johnny's Selected Seeds

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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.

Full-Size Onion Varieties | Comparison Chart (PDF)

Map of Long-Day, Intermediate-Day & Short-Day Onions

51 Products

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Safrane Full-Size Onions

Safrane

(F1) Onion Seed

A hard yellow storage onion for the main season.

Patterson Full-Size Onions

Patterson

(F1) Onion Seed

Exceptionally long-storing yellow onion.

Rossa di Milano Full-Size Onions

Rossa di Milano

Organic Onion Seed

Our superior strain of this classic, long-day Italian OP.

Cabernet Full-Size Onions

Cabernet

(F1) Onion Seed

Early yields of red onions without sacrificing size.

Redwing Full-Size Onions

Redwing

(F1) Onion Seed

Reliable long-storage red.

Walla Walla Sweet Full-Size Onions

Walla Walla Sweet

Onion Seed

The famous juicy, sweet regional favorite from Walla Walla, Washington.

Candy Full-Size Onions

Candy

(F1) Onion Seed

Widely adapted Walla Walla type for growing farther South.

Sierra Blanca Full-Size Onions

AAS (All-America Selections) Winners

Sierra Blanca

(F1) Onion Seed

Big, mild white onions from a widely-adapted day-neutral variety.

Patterson Full-Size Onions

Patterson

Pelleted (F1) Onion Seed

Exceptionally long-storing yellow onion.

Monastrell Full-Size Onions

Monastrell

Organic (F1) Onion Seed

Long harvest window.

Ailsa Craig Exhibition Full-Size Onions

Ailsa Craig Exhibition

Onion Seed

A classic mild yellow onion with excellent size potential.

Ailsa Craig Full-Size Onions

Ailsa Craig

Organic Pelleted Onion Seed

A classic mild yellow onion with excellent size potential.