Sweet pea · Kazan, Tatarstan Republic, Russia
When to sow sweet peas in Kazan
Main outdoor window
26 Mar - 16 Apr
The window this page is built around.
Timed from last spring frost
7 May
In Kazan, on your chosen risk.
Ready to pick
24 Jun - 14 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 Kazan
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
26 Feb - 19 Mar
Ten weeks before your last frost, under cover or on a windowsill.
Sow direct
26 Mar - 16 Apr
Six weeks before your last frost.
Plant out
9-30 Apr
Four weeks before your last frost.
In flower
24 Jun - 14 Jul
Sweet peas through the year
Against the frost risk in Kazan
Why these dates
Sow in autumn and overwinter in a cold frame in zone 6 and warmer, or start ten weeks before last frost. Pinch at four true leaves.
Young plants take -8C and benefit from the cold. This is a flower where autumn sowing genuinely doubles 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. Sweet peas are timed from 10 weeks before that frost for an indoor start, with planting out 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Kazan.
The median frost-free season here is 149 days, against 90 to 110 days to first flower for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Nearby
Sweet peas in places close by
Growing sweet peas in Kazan
When should I plant sweet peas in Kazan?
Aim for 26 Mar - 16 Apr in an average year. If you would rather not gamble on the weather, wait until 11 Apr - 2 May - by then frost has finished in nine years out of ten.
When will sweet peas be ready to harvest in Kazan?
Expect to start picking around 24 Jun - 14 Jul, based on 90 to 110 days to maturity from the planting date calculated for this location.
How much frost will sweet peas tolerate?
Young plants take -8C and benefit from the cold. This is a flower where autumn sowing genuinely doubles the season.