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

Onion Seed Starter Grow Kit

BOTANICAL NAMEAllium cepa

USD 10.99

Currently unavailable

Onions are the foundation of nearly every savory dish — grow your own for sweeter, fresher flavor.

GERMINATION7-14 days
SUNLIGHTFull Sun (6-8 hours daily)

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The growing details, all in one place.

Germination01

7-14 days

Light02

Full Sun (6-8 hours daily)

Temperature03

65-75F

Hardiness04

Check the directions supplied with your seed variety.

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.

A closer look

The details
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Full product description
Onions are the foundation of nearly every savory dish — grow your own for sweeter, fresher flavor. How to grow Onion from seed Sow your seeds at the depth listed on the included instruction card and cover lightly. Then set the clear humidity lid on top to hold warmth and moisture. Keep the planter warm and in bright light, and mist the surface whenever it begins to dry. When your Onion sprouts appear, remove the lid and move it to your brightest window or under a grow light. Once seedlings have their second set of true leaves, pot them up or move them outdoors after your last frost. Onion at a glance Botanical name: Allium cepa Germination: 7-14 days at 65-75F USDA zones: Any Zone If grown indoors Mature size: 12-18 inches Sunlight: Full Sun (6-8 hours daily) Seeds included: 2-7+ Seeds Frequently asked questions What's included in the Onion Seed Starter Grow Kit? How do I grow Onion from seed? Moisten the included soil, sow your Onion seeds at the depth on the instruction card, keep the planter warm and bright under the humidity lid, and mist until they sprout. Full steps are in your kit. How long do Onion seeds take to germinate? Onion seeds typically sprout in 7-14 days at 65-75F when kept warm and evenly moist. Your guide lists the ideal conditions. Does this kit use real potting soil? What if my seeds don't sprout?
Catalog variants
  • SIAC-001-198PAA — USD 10.99 · Out of stock
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Good questions grow here

A little more clarity.

How do I grow Onion from seed?

Moisten the included soil, sow your Onion seeds at the depth on the instruction card, keep the planter warm and bright under the humidity lid, and mist until they sprout. Full steps are in your kit.

How long do Onion seeds take to germinate?

Onion seeds typically sprout in 7-14 days at 65-75F when kept warm and evenly moist. Your guide lists the ideal conditions.

INFORMATION SOURCE

Growing details are supplied in the Seeds In A Cup product catalog. Follow the instructions included with your specific kit.

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