Plant Library


Red Onion

Allium cepa 'Red'

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Red Onion (Allium cepa 'Red') at Pesche's Garden Center

Red Onion fruit and flesh

Red Onion fruit and flesh

(Photo courtesy of NetPS Plant Finder)

Red Onion (Allium cepa 'Red') at Pesche's Garden Center

Red Onion fruit

Red Onion fruit

(Photo courtesy of NetPS Plant Finder)

Height:  18 inches

Spacing:  6 inches

Sunlight:  full sun 

Hardiness Zone:  (annual)


A wonderful sun loving variety perfect for large patio containers or gardens; produces 3" wide onions with reddish skin and white fleshed tinged with purple; pungent and sharp, great for salads, sandwiches, burgers, pickling and salsas

Edible Qualities

Red Onion is an annual vegetable plant that is typically grown for its edible qualities. The entire above-ground parts of the plant are edible, and are typically harvested when mature. The edible parts have a sharp taste and a firm texture.

The plant is most often used in the following ways:

  • Fresh Eating
  • Eating When Cooked/Prepared
  • Cooking
  • Baking
  • Sauces

Planting & Growing

Red Onion will grow to be about 18 inches tall at maturity, with a spread of 6 inches. When planted in rows, individual plants should be spaced approximately 6 inches apart. This vegetable plant is an annual, which means that it will grow for one season in your garden and then die after producing a crop.

This plant is typically grown in a designated vegetable garden. It should only be grown in full sunlight. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selected variety of a species not originally from North America. It can be propagated by multiplication of the underground bulbs; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

Hardiness Zone Plant Height Minimum Sunlight
Ornamental Features