How to grow Onion plant

Onion plant grow and care – herbaceous of the genus Allium also known as Bulb Onion, Onion plant is a perennial plant because the vegetative reproduction of the bulbs, the bulb is biennial and grown as annual plant, can grow in mediterranean, desert, subtropical, temperate climate , some cultivars also grow tropic climate and growing in hardiness zone 3-12.

Leaves are narrow and hollow grow in radial growth, leaves grow in groups linked together.

Flowers small the color is white the flower grow on hollow stem as inflorescence in a umbel shape.

Onion plant bulb

Bulb is made from layers that grow in radial round shape the layers color can be: white, yellow or purple.

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How to grow Onion plant growing and care:

Mulch, rich soil, well drain soil, free of rocks, nitrogen

What is the best way to start growing?
Plant / Seed / Bulb

Is it necessary to use vegetative reproduction?
No, but possible

Difficulties or problems when growing:

Planting season:
Spring, summer / Autumn depend on the cultivars

Pests and diseases:
Onion plant fly, Onion plant thrips

Pruning season:
All season

How to prune:
Stem of inflorescence

Size of the plant?
Bulb 1-10 cm (0.3-4 inches), leaves 10-50 cm (4-20 inches)

Growth speed in optimal condition:
Medium growing

Water requirement:
Average amount of water

Light conditions in optimal condition for growing:
Full Sun / Half Shade

Is it possible to grow indoor as houseplant?

Growing is also possible in a planter /flowerpot / containers:

Blooming information

Bloom season:

General information about the flower
White flowers grow in inflorescence on hollow stem

Thinning the bloom:
Recommend to thinning the stem unless you want the seeds

Pollination is done by:

Edible leaves

Leaves harvesting season:
All year

How to harvest the leaves?
Two possibility separate leaves or all the leaves of the plant (better all together with the bulb)

Information about leaves:
Leaves are narrow and hollow grow in radial growth, leaves grow in groups linked together

Uses of Onion plant leaves:
Eaten raw, cooked, spice, herbs

Edible Roots

Information about Bulb:
The bulb is made from layers that grow in radial round shape the layers color can be: white, yellow or purple

When to pull up Bulb:
Summer / Autumn

Uses of Onion plant bulb:
Eaten raw, cooked, spice, salad

Vegetative Reproduction

Vegetative Reproduction Method:

Preferred time for vegetative reproduction:
All year

Time to grow roots in vegetative reproduction:
If the bulb is fully grow, in the beginning of the season it grows the roots

Treatment for vegetative reproduction:
The same as fully grown plants, sometimes more water

Scientific name:

Allium cepa

How to grow Onion plant

Onion flowers

Onion bloom

Onion plant

Onion plant care

Harvest Onion plant

Onions roots

Growing Onion plant


Blooming Seasons
  • Spring flowers
  • Summer flowers
Edible Parts
  • Edible leaves
  • Edible Roots
Culinary uses
  • Cooked
  • Eaten raw
  • Herbs
  • Salad
  • Spices
Flower colors
  • White flower
  • Desert Climate
  • Mediterranean Climate
  • Subtropics Climate
  • Temperate Climate
Harvest Season
  • Autumn Harvest
  • Spring Harvest
  • Summer Harvest
  • Winter harvest
Plant growing speed
  • Average growing plants
  • Fast growing plants
Plant life-form
  • Deciduous
  • Evergreen
  • Geophyte
  • Herbaceous
  • Leaf plant
  • Perennial plant
Plant Uses
  • Edible plants
Planting Season
  • Autumn Planting
  • Spring Planting
  • Summer planting
  • Winter planting
Plants sun exposure
  • Full sun Plants
  • Part shade Plants
Watering plants
  • Regularly water
Hardiness zone
  • Hardiness zone 10
  • Hardiness zone 11
  • Hardiness zone 12
  • Hardiness zone 3
  • Hardiness zone 4
  • Hardiness zone 5
  • Hardiness zone 6
  • Hardiness zone 7
  • Hardiness zone 8
  • Hardiness zone 9