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

Ailsa Craig Full-Size Onions

Ailsa Craig

Organic Onion Seed

A classic mild yellow onion with excellent size potential.

Talon Full-Size Onions

Talon

Organic (F1) Onion Seed

Organic long-day storage onion.

Redwing Onion Plants

Redwing

(F1) Onion Plants

Reliable long-storage red.

Ailsa Craig Exhibition Full-Size Onions

Ailsa Craig Exhibition

Onion Seed

A classic mild yellow onion with excellent size potential.

Red Carpet Full-Size Onions

Red Carpet

Organic (F1) Onion Seed

Vibrant red, long-day storage onion.

White Castle Full-Size Onions

White Castle

(F1) Onion Seed

Short-day onion with excellent color and disease resistance.

Redwing Full-Size Onions

Redwing

Pelleted (F1) Onion Seed

Reliable long-storage red.

Patterson Onion Plants

Patterson

(F1) Onion Plants

Extremely long-storage yellow onion.

Barolo Full-Size Onions

Barolo

(F1) Onion Seed

An earlier red storage type.

Sierra Blanca Full-Size Onions

AAS (All-America Selections) Winners

Sierra Blanca

Pelleted (F1) Onion Seed

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

Blush Full-Size Onions

Blush

(F1) Onion Seed

Unique pink specialty onion with excellent storage potential.

New York Early Full-Size Onions

New York Early

Organic Onion Seed

Classic yellow OP strain, dependable and productive early onion.

Expression Full-Size Onions

Expression

(F1) Onion Seed

Large, intermediate-day, yellow Spanish variety.

Sierra Blanca Onion Plants

AAS (All-America Selections) Winners

Sierra Blanca

(F1) Onion Plants

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

Bridger Full-Size Onions

Bridger

(F1) Onion Seed

First-early onions from seed.

Bridger Full-Size Onions

Bridger

Pelleted (F1) Onion Seed

The best onion for overwintering in the North.

Blush Plants Full-Size Onions

Blush Plants

(F1) Onion Plants

Unique pink specialty onion.

Powell Full-Size Onions

Powell

Organic (F1) Onion Seed

Organic and downy mildew-resistant long-day onion.

Monastrell Full-Size Onions

Monastrell

Organic Pelleted (F1) Onion Seed

Long harvest window.

Frontier Full-Size Onions

Frontier

(F1) Onion Seed

Downy mildew resistance for a wider range of latitudes.

Expression Full-Size Onions

Expression

Pelleted (F1) Onion Seed

Large, intermediate-day, yellow Spanish variety.

Elsye Full-Size Onions

Elsye

Organic (F1) Onion Seed

Very upright plant habit.

Red Carpet Full-Size Onions

Red Carpet

Organic Pelleted (F1) Onion Seed

Vibrant red, long-day storage onion.

Cabernet Full-Size Onions

Cabernet

Pelleted (F1) Onion Seed

Early yields of red onions without sacrificing size.

Rossa di Milano Full-Size Onions

Rossa di Milano

Organic Pelleted Onion Seed

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

Ailsa Craig Full-Size Onions

Ailsa Craig

Organic Pelleted Onion Seed

A classic mild yellow onion with excellent size potential.

Talon Full-Size Onions

Talon

Organic Pelleted (F1) Onion Seed

Organic long-day storage onion.

Walla Walla Onion Plants

Walla Walla

Onion Plants

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

Candy Onion Plants

Candy

(F1) Onion Plants

Widely adapted Walla Walla type for growing farther South.

Ailsa Craig Exhibition Onion Plants

Ailsa Craig Exhibition

Onion Plants

A classic mild yellow onion with excellent size potential.

Calibra Full-Size Onions

Calibra

Organic (F1) Onion Seed

Storage onion for intermediate latitudes.

Red Spring Full-Size Onions

Red Spring

(F1) Onion Seed

Red long-day onion for overwintering.

Scout Full-Size Onions

Scout

(F1) Onion Seed

Early, adaptable intermediate-day Spanish type with disease resistance.

T-448 Full-Size Onions

T-448

(F1) Onion Seed

Earliest long-day overwintering onion for the North.

Yellow Granex Onion Plants

Yellow Granex

(F1) Onion Plants

Short-day for southern growers only, grown as Vidalia type in Georgia.

Walla Walla Sweet Full-Size Onions

Walla Walla Sweet

Organic Onion Seed

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

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