Onion
Allium cepa · Onions & garlic · Amaryllis family
Also known as: Bulb Onion · Common Onion · Garden Onion
Easy30–60cmNot pet-safeEdible
Onion care at a glance
Onion (Allium cepa) needs a moderate amount of water and prefers to grow in full sun.
- Water need
- Medium
- Light
- Full sun
- Soil moisture
- Evenly moist
- Nutrients
- Medium
- Life cycle
- Biennial
Pests, Diseases & Toxicity on Onion
Possible pests on Onion include Onion fly. A common disease is White rot. Also possible: Downy mildew. Onion is toxic to cats and dogs. Mainly the bulb and leaves are toxic, while roots and leaves can be eaten.
Pest
- Onion fly Medium
Disease
- Downy mildew Medium
- White rot High
Toxicity
- Allium toxicosis Medium
A baseline from curated sources, not a command. You decide in the end.
Frequently asked questions about Onion
- Which pests affect Onion?
- Possible pests on Onion include Onion fly.
- Which diseases affect Onion?
- A common disease is White rot. Also possible: Downy mildew.
- Is Onion toxic to cats and dogs?
- Onion is toxic to cats and dogs. Mainly the bulb and leaves are toxic, while roots and leaves can be eaten.
- How much water does Onion need?
- Onion has a moderate water requirement.
- What light does Onion need?
- Onion prefers to grow in full sun.
- Is Onion frost-hardy?
- Onion is frost-hardy and tolerates frost. Its lower limit is around -5 °C.
- Can you eat Onion?
- Yes, the edible parts are mainly: roots and leaves. Other parts (the bulb and leaves) are toxic, though.