Onion belongs to the Allium genus.

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Plant Wiki

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Plant taxonomists have divided onions (Allium cepa) into three groups, the Cepa Group (bulbing onions), the Aggregatum Group (shallots, multiplier onions, potato onions), and the Proliferum Group (top-setting onions, walking onions, Egyptian onions, tree onions).

• Lifecycle The lifecycle that this plant exhibits. Perennial Category The basic category that this plant belongs to. Vegetable
• Hardiness How frost hardy this plant is. Very Hardy Country of Origin Where this plant originated from.
• Mature Height How tall the plant will be when it grows up. ? Mature Spread How wide the plant will be when it grows up. ?
• Bloom Time When this plant usually blooms. ? Harvest Time When this plant is usually harvested. Early Autumn

How to keep this plant happy

• USDA Zone Range The zones that this plant is recommended to grow best in. - pH Range The level of acidity that this plant thrives in. 6.0 - 7.0
• Water Requirements The amount of water that this plant likes to drink. ? Nitrogen Requirements The amount of nitrogen that should be present in the soil. ?
• Soil The type of soil that this plant likes to live in.
  Combination Clay
  Sun The type of light that this plant likes to sunbake in.
  Full Sun Partial Sun
• Min. Air Temperature The lowest air temp that this plant will be happy in. ? Max. Air Temperature The highest air temp that this plant will be happy in. ?

Sowing and Germinating Instructions

• Can Sow Direct? Can seeds be sown directly in situ? Yes Sowing Depth Seeds should be sown at this depth. 2.5 cm / 0.78"
• Sowing Distance Apart This plant should be sown at least this distance apart 5.0 cm / 1.95" Sowing Row Distance Apart This plant should be sown in rows at least this distance apart ?
• Min. Germination Temperature The lowest temp that this plant will germinate from seed. 13°C / 55°F Max. Germination Temperature The highest temp that this plant will germinate from seed. 35°C / 95°F

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Planting Out / Transplanting Instructions

• Planting Distance Apart Seedlings should be planted this far apart. ? Planting Row Distance Apart Rows between plantings should be at least this far apart. ?

How long does it approximately take to grow?

• Days to Germination From seed to seedling 21 days Average 21 days | Min 6 days | Max 34 days (19)
• Days to Transplant From seedling to transplant / planting out + days
• Days to Maturity From transplant to harvest / maturity of plant + days Total Growing Days From seed to maturity = days

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When should I start sowing and growing?

• When to sow The number of days to sow before or after your last frost date. 28 days before Last Frost Date When to plant out The number of days to plant out before or after your last frost date. ?

Etymology

Folklore

Other Names

Allium cepa Cepa Group, Allium cepa (Cepa Group)