Claytonia · Uijeongbu-si, Gyeonggi-do, South Korea

When to plant claytonia in Uijeongbu-si

Main outdoor window

12 Jun - 10 Jul

The window this page is built around.

Timed from last spring frost

3 April

In Uijeongbu-si, on your chosen risk.

Ready to pick

1 Nov - 30 Apr

If you plant at the start of the window.

The average last frost. Half of all years are later than this.

Cautious Balanced Bold

Step by step in Uijeongbu-si

Each window is a range, not a single day. Earlier in the range buys you a longer season; later in it buys you a safer one.

Sow for overwintering

9-30 Aug

Counting back 74 days from your first frost so the crop matures in time.

Sow direct

12 Jun - 10 Jul

Ten weeks after your last frost.

Harvest

1 Nov - 30 Apr

Sow in succession. A single sowing gives you a single glut. Sow a short row every 21 days through the window above and you get a steady supply instead.

Frost tolerance

Very-hardy

Damaged below

-12°C (10.4°F)

Days to maturity

45–60

Min soil temp

4°C (39.2°F)

Spacing

15 cm

Sowing depth

5 mm (0.2 in)

Sun

Partial

Claytonia through the year

Against the frost risk in Uijeongbu-si

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Claytonia

Frost risk Autumn sowing Sow direct Harvest Today

Why these dates

Sow in late summer, roughly ten weeks after midsummer, for picking from late autumn onwards. It self-seeds freely, so one deliberate sowing often becomes a permanent patch.

Hardy to about -12C and unbothered by repeated freezing, which is why it was a winter green long before it was a salad leaf.

Seed packets and extension guides express timing as weeks either side of the last spring frost, because that is the only reference point that travels. Claytonia are timed for direct sowing 10 weeks after it, and this page simply resolves those offsets against the frost date computed for Uijeongbu-si.

The median frost-free season here is 223 days, against 45 to 60 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.

See every crop timed for Uijeongbu-si →

Nearby

Claytonia in places close by

Seoul 20 km Goyang-si 21 km Hanam 26 km Gwangmyeong 33 km Seongnam-si 35 km Bucheon-si 36 km

Also in Uijeongbu-si

Other vegetables to time

Tomatoes tender Lettuce half hardy Potatoes half hardy Courgettes tender Sweet peppers tender Carrots hardy Cucumbers tender Green beans tender Peas hardy Garlic very hardy Chilli peppers tender Sweetcorn tender

Growing claytonia in Uijeongbu-si

When should I plant claytonia in Uijeongbu-si?

Aim for 12 Jun - 10 Jul in an average year. If you would rather not gamble on the weather, wait until 21 Jun - 19 Jul - by then frost has finished in nine years out of ten.

When will claytonia be ready to harvest in Uijeongbu-si?

Expect to start picking around 1 Nov - 30 Apr, based on 45 to 60 days to maturity from the planting date calculated for this location.

How much frost will claytonia tolerate?

Hardy to about -12C and unbothered by repeated freezing, which is why it was a winter green long before it was a salad leaf.