Coriander · Kovrov, Vladimir Oblast, Russia
When to plant coriander in Kovrov
Main outdoor window
25 Apr - 5 May
The window this page is built around.
Timed from last spring frost
7 May
In Kovrov, on your chosen risk.
Ready to pick
9 Jun - 4 Jul
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 Kovrov
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 Jun - 11 Jul
Counting back 84 days from your first frost so the crop matures in time.
Sow direct
25 Apr - 5 May
Held back until the soil is warm enough for this crop. The frost date on its own would say 23 Apr, which is too cold for it to start.
Harvest
9 Jun - 4 Jul
Coriander through the year
Against the frost risk in Kovrov
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 Kovrov.
With one correction, which is the note at the top of the page: the offset alone would put this crop in soil that is still too cold for it. Where the frost date and the soil temperature disagree, the dates here follow the soil, because a seed in cold ground either rots or waits, and a sowing made a fortnight later usually overtakes it.
The median frost-free season here is 149 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 Kovrov
When should I plant coriander in Kovrov?
Aim for 25 Apr - 5 May in an average year. If you would rather not gamble on the weather, wait until 9-19 May - by then frost has finished in nine years out of ten.
Can I plant coriander earlier in Kovrov?
Frost is finished by about 23 Apr, but the soil is still too cold. Coriander will not start until it reaches 7°C (44.6°F), and here that is around 25 Apr. Going in earlier usually means seed that rots or transplants that sit and sulk, and a later sowing catches them up.
When will coriander be ready to harvest in Kovrov?
Expect to start picking around 9 Jun - 4 Jul, 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.