GreenlyWhen to plant tomatoes in St. Petersburg: from 25 January
In St. Petersburg, tomato: sow for seedlings from 13 November; plant into a greenhouse from 4 January; plant out into open ground from 25 January. There is no autumn frost here, so the frost dates set no end to the window. For plants and seeds, the places nearby include Dolins Garden Center (garden centre, 3 km) and Garden Center (The Home Depot) (garden centre, 3 km); addresses and opening hours are below.
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Tomato in St. Petersburg: soil, season and weather
In St. Petersburg frost, not soil, sets the date: the top 7 cm of soil averages 15 °C — the minimum on the tomato card — already in the first week of January, before the last frost on 18 January, so planting waits only for the week after that frost. St. Petersburg has no autumn frost in the median year, so frost does not end the season.
| Last spring frost | 18 January |
|---|---|
| Top 7 cm of soil at 15 °C | already in the first week of January |
| Into an unheated greenhouse | from 4 January; January outside: 12.7 °C at night, 20 °C by day; card 16–27 °C |
| Days in the bed to the first harvest (card) | 70 |
| First harvest, if planted in this window | from 5 April |
| Daylight | 10:29 on 4 December, 10:44 on 25 January |
| Watering outdoors when fruiting (card) | every 3 days; the driest month, March, has 7 rainy days |
The same dates in St. Petersburg hold for Cucumber, Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.
Tomato in St. Petersburg: care after planting
Planted on 25 January: in the first weeks water every 4 days.
Feeding, by the card’s schedule from that day:
- 25 January — feed: balanced (NPK)
- 22 February — feed: nitrogen
Pests and diseases of tomato to watch for:
- Bacterial canker of tomato
- Tomato leaf mould
- Late Blight
- Bacterial spot
- Fruit cracking
- Bacterial wilt (brown rot of potato)
Dates count from the first planting day of the window above; a later planting moves them by as many days.
Weather in St. Petersburg during the tomato season
Days average above the tomato card's 16–27 °C in April (27.1 °C), May (29.6 °C) and June (30.4 °C). Nights average below 16 °C in January (12.7 °C) and February (15.3 °C).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days | Daylight on the 15th |
|---|---|---|---|---|---|
| January | 20 | 12.7 | 70 | 7 | 10:34 |
| February | 22.7 | 15.3 | 53 | 6 | 11:13 |
| March | 24.5 | 16.8 | 47 | 7 | 11:58 |
| April | 27.1 | 19.5 | 63 | 7 | 12:49 |
| May | 29.6 | 22.3 | 92 | 10 | 13:31 |
| June | 30.4 | 24.7 | 159 | 21 | 13:54 |
ERA5 2016–2025, Open-Meteo
Tomato in nearby cities
2 of the nearest cities share St. Petersburg's date.
| City | Distance | Date | Difference |
|---|---|---|---|
| Tampa | 25 km | 25 January – 3 September | same day |
| Orlando | 150 km | 25 January – 4 September | same day |
| Gainesville | 206 km | 29 January – 3 September | 4 days later |
| Jacksonville | 296 km | 30 January – 6 September | 5 days later |
| Tallahassee | 331 km | 29 January – 2 September | 4 days later |
| Savannah | 497 km | 17 February – 3 September | 23 days later |
Where to buy tomato plants and seeds near St. Petersburg
Buy plants ready to set out from 25 January (from 4 January for an unheated greenhouse); seed for raising your own is sown from 13 November. Within 15 km of St. Petersburg OpenStreetMap lists 6 garden centres, 2 markets and 1 farm shop (collected 28 October 2026).
- Dolins Garden Center — garden centre
62nd Avenue North 801, 33702 Saint Petersburg · Mon–Sat 08:30–17:30; Sun 10:00–17:00 · 3 km - Garden Center (The Home Depot) — garden centre
Mon–Sat 06:00–22:00; Sun 08:00–20:00 · 3 km - Palm Trees Direct — garden centre
Bay Pines Boulevard 8440 · 9 km - Doudna's Seminole Mower — garden centre
Seminole Boulevard 8700 · 12 km
Places: © OpenStreetMap contributors, ODbL.
- How to grow tomato
- All frost dates and weather of St. Petersburg
- Shops and markets: St. Petersburg
- Selling a surplus in the United States
- When to plant tomatoes in the United States
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant tomatoes in St. Petersburg?
In St. Petersburg, tomato: sow for seedlings from 13 November; plant into a greenhouse from 4 January; plant out into open ground from 25 January. There is no autumn frost here, so the frost dates set no end to the window.
When to sow tomatoes for seedlings in St. Petersburg?
Sow for seedlings from 13 November.
