GreenlyWhen to plant cucumber in Saint Petersburg
In Saint Petersburg, cucumber: sow seedlings around 15 April for the greenhouse and around 6 May for open ground; plant into a greenhouse around 27 May; plant out into open ground around 17 June.
Last spring frost around 1 May, first autumn frost around 20 October. Frost-free days: 172 days.
The dates follow the Greenly calendar: open ground a week after the last frost once the soil is warm enough for the crop, frost-hardy crops three weeks before it, an unheated greenhouse three weeks earlier, seedlings sown so they are ready on the day. In a cold year allow a week or two more.