GreenlyWhen to plant eggplants in St. Petersburg: from 25 January
In St. Petersburg, eggplant: sow for seedlings from 5 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 Corner Garden Produce (farm shop, 6 km) and Doudna's Seminole Mower (garden centre, 12 km); addresses and opening hours are below.
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Eggplant in St. Petersburg: soil, season and weather
In St. Petersburg frost, not soil, sets the date: the top 7 cm of soil averages 18 °C — the minimum on the eggplant 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 18 °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 21–29 °C |
| Days in the bed to the first harvest (card) | 70 |
| First harvest, if planted in this window | from 5 April |
| Daylight | 10:35 on 26 November, 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 Tomato, Cucumber, Bell Pepper, Zucchini, Pumpkin and Watermelon.
Eggplant 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 eggplant to watch for:
- Bacterial wilt (brown rot of potato)
- Colorado Potato Beetle
- Early Blight
- Tomato hornworm
- Tomato russet mite
- Blossom-end rot
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 eggplant season
Days average above the eggplant card's 21–29 °C in May (29.6 °C) and June (30.4 °C). Months that stay below 21 °C even by day on average: January (20 °C). Nights average below 21 °C in January–April (12.7–19.5 °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
Eggplant 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 | 18 February – 3 September | 24 days later |
| Jacksonville | 296 km | 11 February – 6 September | 17 days later |
| Tallahassee | 331 km | 24 February – 2 September | 30 days later |
| Savannah | 497 km | 25 February – 3 September | 31 days later |
Where to buy eggplant 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 5 November. Within 15 km of St. Petersburg OpenStreetMap lists 6 garden centres, 2 markets and 1 farm shop (collected 28 October 2026).
- Doudna's Seminole Mower — garden centre
Seminole Boulevard 8700 · 12 km - Baum Ave market — market
Central Avenue 1113, 33705 Saint Petersburg · Mon–Sun 09:00–20:00 · 6 km · baumavemarket.com - Saint Petersburg Saturday Morning Market — market
Sat 09:00–14:00 · 7 km · saturdaymorningmarket.com - Corner Garden Produce — farm shop
4th Avenue South 2300, 33712 Saint Petersburg · Tue–Sat 10:00–19:00 · 6 km
Places: © OpenStreetMap contributors, ODbL.
- How to grow eggplant
- All frost dates and weather of St. Petersburg
- Shops and markets: St. Petersburg
- Selling a surplus in the United States
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant eggplants in St. Petersburg?
In St. Petersburg, eggplant: sow for seedlings from 5 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 eggplants for seedlings in St. Petersburg?
Sow for seedlings from 5 November.
