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  1. Plant Search
  2. /
  3. Allium cepa

How to grow and care for Allium cepa

plant care guide about watering, fertilizing, trimming, repotting, cutting, propagating Allium cepa, Garden onion, Common onion

Allium cepa 101 - Plant Care Instructions

Bright direct light

16C° ~24C°

Every 10 days

water

How to water Allium cepa

How often should I water?

check Allium cepa Every 10 days if it needs water when it’s very cold (below 5℃), water less frequently

When do I need to water?

the top 2-3 inches of soil is dry

When is the Dormant period?

it goes into dormancy in the Summer, Winter. during the period, 1.5~2x the watering interval you use in the warm season.

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Light & Location

How much light does a Allium cepa need?

user_site

Bright direct light

Grow light

Light preference

Allium cepa likes Bright direct light, Grow light day. The brighter the space, the better this plant grows.

Check if there’s an optimal place in your house!

This plant prefers
2K ~ 20K lux to thrive!

0

20K~

2K

20K

Start Light Meter

Temperature

Natural habitat

-15

3~40℃

45

Houseplants

-15

16~24℃

45

Plants that grow in the wild and those that grow indoors prefer different temperatures. If you grow Allium cepa at home, make sure the temperature is 16~24℃.

Humidity

Ideal humidity

0

40~70%

100

Allium cepa prefers humidity about 40~70%. If necessary, increase humidity by misting, humidifier.

Fertilize

Collective Knowhow

When should I fertilize?

Only when your plant is healthy

How frequently should I fertilize?

1-2 times in growing season. A pinch for a small pot.

Characteristic

Characteristic NameCharacteristic Value
LifespanPerennial, Annual, Biennial

Is Allium cepa toxic?

Allium cepa is dangerous to Cat, Hamster, Dog

Cat

Hamster

Dog

Is your plant sick?

Track what happened. We’ll let you know the cause and treatment shortly!

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Start the Diagnosis
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1:1 Expert Help

You’ll get professional feedback within 24 hours from an expert on our team.

feedback will include

Symptom
Treatment
Cause
+Extra care tips
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