When to plant cilantro / coriander in St. Petersburg
Cilantro / Coriander 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
Feb 21 – Mar 18
Picking runs until conditions turn against the crop.
Window
Days to maturity
45 – 70 d
From sowing to first pick.
Common questions
When can I sow cilantro / coriander 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 cilantro / coriander be ready to harvest in St. Petersburg?
Expect to harvest from around late February (Feb 21–Mar 18) 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 cilantro / coriander to maturity outdoors.
The rule of thumb
Sow cilantro / coriander 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.