Claytonia · Eslamshahr, Tehran, Iran
When to plant claytonia in Eslamshahr
Main outdoor window
27 May - 24 Jun
The window this page is built around.
Timed from last spring frost
18 March
In Eslamshahr, 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.
Step by step in Eslamshahr
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
29 Aug - 19 Sep
Counting back 74 days from your first frost so the crop matures in time.
Sow direct
27 May - 24 Jun
Ten weeks after your last frost.
Harvest
1 Nov - 30 Apr
Claytonia through the year
Against the frost risk in Eslamshahr
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 Eslamshahr.
The median frost-free season here is 260 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.
Also in Eslamshahr
Other vegetables to time
Growing claytonia in Eslamshahr
When should I plant claytonia in Eslamshahr?
Aim for 27 May - 24 Jun in an average year. If you would rather not gamble on the weather, wait until 13 Jun - 11 Jul - by then frost has finished in nine years out of ten.
When will claytonia be ready to harvest in Eslamshahr?
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.