Cumin · Sunch’ŏn, South Pyongan, North Korea
When to plant cumin in Sunch’ŏn
Main outdoor window
27 Apr - 18 May
The window this page is built around.
Timed from last spring frost
13 April
In Sunch’ŏn, on your chosen risk.
Ready to pick
5 Aug - 4 Sep
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 Sunch’ŏn
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.
Start indoors
2-23 Mar
Six weeks before your last frost, under cover or on a windowsill.
Sow direct
27 Apr - 18 May
Two weeks after your last frost.
Plant out
27 Apr - 18 May
Two weeks after your last frost.
Harvest
5 Aug - 4 Sep
Cumin through the year
Against the frost risk in Sunch’ŏn
Why these dates
No frost tolerance. Killed at 0C.
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. Cumin are timed from 6 weeks before that frost for an indoor start, with planting out 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Sunch’ŏn.
The median frost-free season here is 200 days, against 100 to 130 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Growing cumin in Sunch’ŏn
When should I plant cumin in Sunch’ŏn?
Aim for 27 Apr - 18 May in an average year. If you would rather not gamble on the weather, wait until 8-29 May - by then frost has finished in nine years out of ten.
When will cumin be ready to harvest in Sunch’ŏn?
Expect to start picking around 5 Aug - 4 Sep, based on 100 to 130 days to maturity from the planting date calculated for this location.
How much frost will cumin tolerate?
No frost tolerance. Killed at 0C.