🥬 Red Cabbage 'Red Drumhead'

Sowing window (UK)	March to May
Minimum soil temperature	5°C at seed depth
Sowing depth	1 cm
Spacing	45 cm apart
Days to germination	10 days
Days to harvest	147 days
Sowing method	Start under cover, transplant out
Frost hardy	Yes
Sun	full-sun
Watering	moderate
Plant family	Brassicaceae

When should I sow Red Cabbage 'Red Drumhead' in the UK?

In the UK, sow Red Cabbage 'Red Drumhead' from March to May. It is normally started under cover and transplanted. Wait until the soil has reached 5°C at seed depth rather than going by the calendar - red cabbage will sit and rot in cold ground.

What soil temperature does Red Cabbage 'Red Drumhead' need to germinate?

Red Cabbage 'Red Drumhead' 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 Red Cabbage 'Red Drumhead'?

For Red Cabbage 'Red Drumhead', sow it 1cm deep and space plants 45cm apart.

How long does Red Cabbage 'Red Drumhead' take to grow?

Red Cabbage 'Red Drumhead' takes roughly 147 days from sowing to harvest. Seed usually germinates in about 10 days.

Is Red Cabbage 'Red Drumhead' frost hardy?

Yes. Red Cabbage 'Red Drumhead' 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.