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

Skip to main content Skip to footer content

0

View Cart

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

54 Products

Sort By:

New

New York Minute Full-Size Onions

New York Minute

Organic Onion Seed

Refined open-pollinated yellow onion for the first-early slot.

Patterson Full-Size Onions

Patterson

(F1) Onion Seed

Exceptionally long-storing yellow onion.

Monastrell Full-Size Onions

Monastrell

Organic (F1) Onion Seed

Long harvest window.

New York Early Full-Size Onions

New York Early

Organic Onion Seed

Classic yellow OP strain, dependable and productive early onion.

Scout Full-Size Onions

Scout

(F1) Onion Seed

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

Candy Full-Size Onions

Candy

(F1) Onion Seed

Widely adapted Walla Walla type for growing farther South.

Cabernet Full-Size Onions

Cabernet

(F1) Onion Seed

Early yields of red onions without sacrificing size.

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.

Walla Walla Sweet Full-Size Onions

Walla Walla Sweet

Onion Seed

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

Rossa di Milano Full-Size Onions

Rossa di Milano

Organic Onion Seed

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

Monastrell Full-Size Onions

Monastrell

Organic Pelleted (F1) Onion Seed

Long harvest window.

Redwing Full-Size Onions

Redwing

(F1) Onion Seed

Reliable long-storage red.