When to plant leek in St. Petersburg
Leek is cold-hardy, so every date keys off St. Petersburg's frost dates.
Step 1 · Sow
Direct sow outdoors
Jan 7 – Jan 28
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 17 – May 7
Picking runs until conditions turn against the crop.
Window
Days to maturity
100 – 120 d
From sowing to first pick.
Common questions
When can I sow leek outdoors in St. Petersburg?
Direct-sow around early January (Jan 7–Jan 28) in St. Petersburg, based on its local frost dates. Confidence 77%.
When will leek be ready to harvest in St. Petersburg?
Expect to harvest from around mid April (Apr 17–May 7) in St. Petersburg, based on its local frost dates. Confidence 71%.
How long is the growing season in St. Petersburg?
St. Petersburg has roughly 365 frost-free days, which is enough time to grow leek to maturity outdoors.
The rule of thumb
Sow leek as soon as the soil is workable — it tolerates cool weather and light frost. Every date on this page is derived from that rule and St. Petersburg's frost dates.
Confidence 79/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.