Soybean · Ulyanovsk, Ulyanovsk, Russia
When to plant soybeans in Ulyanovsk
Main outdoor window
24 May - 14 Jun
The window this page is built around.
Timed from last spring frost
30 April
In Ulyanovsk, on your chosen risk.
Ready to pick
17 Aug - 21 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 Ulyanovsk
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 direct
24 May - 14 Jun
Two weeks after your last frost. Held back until the soil is warm enough for this crop. The frost date on its own would say 14 May, which is too cold for it to start.
Harvest
17 Aug - 21 Sep
Soybeans through the year
Against the frost risk in Ulyanovsk
Why these dates
Sow two weeks after the last frost into warm soil. Varieties are grouped by maturity for a given latitude, and a variety from the wrong group will either flower far too early or fail to finish at all - this matters more with soybeans than with almost any other crop.
No frost tolerance. Killed at 0C at both ends of the season.
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. Soybeans are timed for direct sowing 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Ulyanovsk.
The median frost-free season here is 164 days, against 85 to 120 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Ulyanovsk
Other grains to time
Growing soybeans in Ulyanovsk
When should I plant soybeans in Ulyanovsk?
Aim for 24 May - 14 Jun in an average year. If you would rather not gamble on the weather, wait until 28 May - 18 Jun - by then frost has finished in nine years out of ten.
Can I plant soybeans earlier in Ulyanovsk?
Frost is finished by about 14 May, but the soil is still too cold. Soybeans needs it at 15°C (59°F) before the crop will start, and here that is around 24 May. Going in earlier usually means seed that rots or transplants that sit and sulk, and a later sowing catches them up.
When will soybeans be ready to harvest in Ulyanovsk?
Expect to start picking around 17 Aug - 21 Sep, based on 85 to 120 days to maturity from the planting date calculated for this location.
How much frost will soybeans tolerate?
No frost tolerance. Killed at 0C at both ends of the season.