Onion (sets): planting, dividing and storing the bulb

Store	Bulb. Cut it in half: you see layers like an onion.
Depth	2.5 cm to the base of the bulb
Spacing	10 cm apart
When	Plant in spring. Plant: 4 weeks before up to your last spring frost. Work out your dates.
Pets	Toxic to Dogs, Toxic to Cats, Toxic to Horses (ASPCA)

Store

Bulb. Cut it in half: you see layers like an onion.

Depth

2.5 cm to the base of the bulb

Spacing

10 cm apart

When

Plant in spring. Plant: 4 weeks before up to your last spring frost. Work out your dates.

Pets

Toxic to Dogs, Toxic to Cats, Toxic to Horses (ASPCA)

About Onion (sets)

Small immature bulbs sold as sets, planted with tips just showing. Grown from seed too.

Depth and spacing

Typical range: 2.5 cm deep and 10 cm apart. A general rule is to plant at two to three times the height of the bulb; check the label for your variety. The drawing is to scale for 2.5 cm deep and 10 cm apart (the size of the organ is illustrative); try your own measurements.

When to plant

Plant in spring. Plant: 4 weeks before up to your last spring frost. These are rules of thumb for the northern hemisphere. Enter your frost dates for real dates.

Dividing and propagating

No division. Grow from sets or seed.

Lifting and storing

Cure in a dry airy place and store cool and dry.

Toxic to Dogs, Toxic to Cats, Toxic to Horses

The ASPCA lists Allium cepa as: toxic to dogs, toxic to cats, toxic to horses. Toxic principle: N-propyl disulfide. Signs: Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting If your pet has chewed any part, call your vet or an animal poison helpline. ASPCA entry.

Onion (sets)