Onion (Allium Cepa) is a biennial bulb in the Amaryllidaceae family with easy care difficulty. It requires moderate watering and full sun light in USDA hardiness zones 4-10. This plant is toxic to cats and dogs — keep it out of reach of pets. It can be grown indoors.

Allium cepa, commonly known as onion, is a widely cultivated bulbous plant used globally as a vegetable and flavoring agent.

Onion

Onion

Allium Cepa

Allium cepa, commonly known as onion, is a widely cultivated bulbous plant used globally as a vegetable and flavoring agent.

Quick Facts

Type
bulb
Lifecycle
biennial
Care Difficulty
Easy
Water Needs
Moderate
Light
Full Sun
Hardiness Zones
4-10

Safety

⚠️
Not Pet Safe
👶
Child Safe
☠️
Toxic

Growing Conditions

Soil Types:loamy, sandy
Indoor:Yes
Outdoor:Yes
Garden Use:edible crop, companion planting

Care Calendar

Monthly care tasks for Onion

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Onion
Onion detail

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Taxonomy

Family:Amaryllidaceae
Genus:Allium