🧅 Pickling Onion 'Paris Silverskin'

Sowing window (UK)	March to April
Minimum soil temperature	5°C at seed depth
Sowing depth	1 cm
Spacing	30 cm apart
Days to germination	24 days
Days to harvest	95 days
Sowing method	Direct sow outdoors
Frost hardy	Yes
Sun	full-sun
Watering	low
Plant family	Amaryllidaceae

When should I sow Pickling Onion 'Paris Silverskin' in the UK?

In the UK, sow Pickling Onion 'Paris Silverskin' from March to April. It is normally sown direct outdoors. Wait until the soil has reached 5°C at seed depth rather than going by the calendar - pickling onion will sit and rot in cold ground.

What soil temperature does Pickling Onion 'Paris Silverskin' need to germinate?

Pickling Onion 'Paris Silverskin' needs a minimum soil temperature of 5°C at seed depth to germinate reliably. Below that, germination is slow and patchy, and seed is more likely to rot than sprout. Measure at around 5cm down, in the morning, rather than trusting air temperature.

How deep and how far apart should I sow Pickling Onion 'Paris Silverskin'?

For Pickling Onion 'Paris Silverskin', sow it 1cm deep and space plants 30cm apart.

How long does Pickling Onion 'Paris Silverskin' take to grow?

Pickling Onion 'Paris Silverskin' takes roughly 95 days from sowing to harvest. Seed usually germinates in about 24 days.

Is Pickling Onion 'Paris Silverskin' frost hardy?

Yes. Pickling Onion 'Paris Silverskin' is frost hardy and will stand through UK frosts, so it can be left out over winter in most of the country.

Sowing data cross-checked against RHS growing guides and UK seed-merchant catalogues. Soil temperatures are the minimum for reliable germination, measured at seed depth.