A little seed. A new beginning.
Seeds In A Cup®A LITTLE SEED. A NEW BEGINNING.

GROW SOMETHING WONDERFUL

Onion

Allium cepa

Your guide to planting, growing, and getting to know this plant.

THE PLANT NOTEBOOK

Onion care, from seed onward.

Botanical name
Allium cepa
Common names
Garden Onion, Bulb Onion
Family
Amaryllidaceae
Genus
Allium
Species
A. cepa
01

Start growing

Seeds require patience. Keep weed-free as onions are poor competitors.

02

Growing with your kit

Use the Seeds In A Cup® kit to start delicate seeds in a controlled environment before garden transplanting.

03

Propagation

By seed, 'sets' (small bulbs), or transplants.

04

Seasonal growth & harvest

100-120 days from seed. Harvest when tops fall over and turn brown.

05

Growing conditions

Friable, fertile loams with full sun.

06

Weather & tolerances

Frost hardy; sensitive to photoperiod (day length) for bulb formation.

07

Pests & plant health

Onion maggot and downy mildew.

08

Plant safety

Safe for humans; toxic to dogs and cats (causes hemolytic anemia).

09

Botanical features

A biennial bulbous plant grown as an annual. Consists of a subterranean bulb of modified leaves.

10

Varieties

‘Walla Walla Sweet’, ‘Red Burgundy’, ‘Yellow Granex’.

11

Garden & everyday uses

Essential culinary base. long storage life

12

Native range & distribution

Cultivated globally; wild ancestors likely from Central Asia.

13

Conservation

Global staple.

14

Name origins

Latin ‘unio’, meaning unity or one, referring to the single bulb composed of many layers.

15

History

Used by Egyptians as a symbol of eternity and placed in tombs of pharaohs.

Grow onion in a cup.