🥬 Claytonia

Sowing window (UK)	August to October
Minimum soil temperature	5°C at seed depth
Sowing depth	1 cm
Spacing	15 cm apart
Days to germination	14 days
Days to harvest	50 days
Sowing method	Direct sow outdoors
Frost hardy	Yes
Sun	partial-shade
Watering	low
Plant family	Montiaceae

When should I sow Claytonia in the UK?

In the UK, sow Claytonia from August to October. It is normally sown direct outdoors. Wait until the soil has reached 5°C at seed depth rather than going by the calendar - claytonia will sit and rot in cold ground.

What soil temperature does Claytonia need to germinate?

Claytonia 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 Claytonia?

For Claytonia, sow it 1cm deep and space plants 15cm apart.

How long does Claytonia take to grow?

Claytonia takes roughly 50 days from sowing to harvest. Seed usually germinates in about 14 days.

Is Claytonia frost hardy?

Yes. Claytonia 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.