Coriander · Huanggang, Hubei, China
When to plant coriander in Huanggang
Main outdoor window
14-24 Feb
The window this page is built around.
Timed from last spring frost
28 February
In Huanggang, on your chosen risk.
Ready to pick
31 Mar - 25 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 Huanggang
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 autumn
20 Aug - 10 Sep
Counting back 84 days from your first frost so the crop matures in time.
Sow direct
14-24 Feb
Two weeks before your last frost.
Harvest
31 Mar - 25 Apr
Coriander through the year
Against the frost risk in Huanggang
Why these dates
Sow every two weeks from two weeks before last frost. The autumn sowing lasts far longer than any summer one, and in mild climates overwinters.
Takes -5C and grows happily in cool weather. Heat, not frost, is what ends a coriander plant.
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. Coriander are timed for direct sowing 2 weeks before it, and this page simply resolves those offsets against the frost date computed for Huanggang.
The median frost-free season here is 278 days, against 45 to 70 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Growing coriander in Huanggang
When should I plant coriander in Huanggang?
Aim for 14-24 Feb in an average year. If you would rather not gamble on the weather, wait until 25 Feb - 7 Mar - by then frost has finished in nine years out of ten.
When will coriander be ready to harvest in Huanggang?
Expect to start picking around 31 Mar - 25 Apr, based on 45 to 70 days to maturity from the planting date calculated for this location.
How much frost will coriander tolerate?
Takes -5C and grows happily in cool weather. Heat, not frost, is what ends a coriander plant.