When to plant eggplants in Santa Rosa: 22 October – 21 February

In Santa Rosa, eggplant: sow for seedlings from 2 August to 23 December; plant into a greenhouse from 1 October to 21 February; plant out into open ground from 22 October to 21 February.

Eggplant in Santa Rosa: soil, season and weather

In Santa Rosa the soil, not frost, sets the date: the last frost is over around 25 August, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 22 October, 58 days later.

Last spring frost	25 August
Top 7 cm of soil at 18 °C	22 October, 58 days after the last frost
Into an unheated greenhouse	1 October – 21 February; October outside: 10.7 °C at night, 22.4 °C by day; card 21–29 °C
First autumn frost	12 June, 234 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	31 December – 1 May
Days left for picking	164
Daylight	10:59 on 23 August, 13:15 on 22 October
Watering outdoors when fruiting (card)	every 3 days; the driest month, June, has 3 rainy days

The same dates in Santa Rosa hold for Cucumber, Bell Pepper, Zucchini, Pumpkin and Watermelon.

Eggplant in Santa Rosa: care after planting

Planted on 22 October: in the first weeks water every 4 days.

Feeding, by the card’s schedule from that day:

22 October — feed: balanced (NPK)
19 November — feed: nitrogen

Pests and diseases of eggplant to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Santa Rosa during the eggplant season

Days average above the eggplant card's 21–29 °C in December (29.6 °C) and January (30.5 °C). Months that stay below 21 °C even by day on average: May (16.5 °C) and June (13.6 °C). Nights average below 21 °C in every month of the season, from 4.6 °C to 18.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
October	22.4	10.7	66	7	12:59
November	26.3	14.3	75	8	14:04
December	29.6	17	64	7	14:39
January	30.5	18.8	59	8	14:23
February	29	17.7	77	7	13:26
March	25.6	15.2	90	8	12:22
April	21.1	11.7	76	7	11:10
May	16.5	7.7	29	5	10:12
June	13.6	4.6	17	3	9:40

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

Around Santa Rosa, San Rafael is 30 days earlier and Bahía Blanca 14 days later.

City	Distance	Date	Difference
Bahía Blanca	293 km	5 November – 23 February	14 days later
Río Cuarto	388 km	29 September – 22 February	23 days earlier
San Luis	414 km	25 September – 2 March	27 days earlier
Neuquén	421 km	17 October – 17 February	5 days earlier
San Rafael	428 km	22 September – 13 February	30 days earlier
Rosario	527 km	29 September – 23 February	23 days earlier

Where to buy eggplant plants and seeds near Santa Rosa

Buy plants ready to set out from 22 October to 21 February (from 1 October to 21 February for an unheated greenhouse); seed for raising your own is sown from 2 August to 23 December. Within 15 km of Santa Rosa OpenStreetMap lists 2 garden centres, 4 farm-supply shops, 2 plant nurseries and 1 market (collected 28 October 2026).

Mercado Concentrador de Santa Rosa — market
Avenida Eva Perón, L6300 Santa Rosa · Mon 06:00–14:00; Tue–Fri 12:00–18:00 · 3 km
Vivero El Pepa — garden centre
1 km
Citricos Pampa — garden centre
4 km
Vivero Dadan — plant nursery
4 km

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

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