When to plant zucchini in Santa Maria: 14 August – 26 March

In Santa Maria, zucchini: sow for seedlings from 3 July to 5 March; plant into a greenhouse from 24 July to 26 March; plant out into open ground from 14 August to 26 March.

Zucchini in Santa Maria: soil, season and weather

In Santa Maria the soil, not frost, sets the date: the last frost is over around 16 July, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 14 August, 29 days later.

Last spring frost	16 July
Top 7 cm of soil at 18 °C	14 August, 29 days after the last frost
First autumn frost	12 June, 303 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	19 September – 1 May
Days left for picking	267
Daylight	10:33 on 24 July, 11:00 on 14 August
Watering outdoors when fruiting (card)	every 3 days; the driest month, February, has 10 rainy days

The same dates in Santa Maria hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Santa Maria: care after planting

Planted on 14 August: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Santa Maria during the zucchini season

About 1545 mm of rain falls in the season; February is the driest month (91 mm) and May the wettest (196 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
August	20.8	10.6	127	9	11:02
September	22.6	13	193	13	11:53
October	24.5	14.6	173	12	12:46
November	27.3	16.5	132	10	13:36
December	29.8	19	110	11	14:02
January	30.6	20.6	113	12	13:51
February	30.1	20.1	91	10	13:07
March	28.3	18.7	138	10	12:18
April	25.2	16.1	131	9	11:23
May	20.8	12.5	196	12	10:39
June	19.2	10.5	141	9	10:15

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Santa Maria, Posadas is 20 days earlier and Tacuarembó 61 days later.

City	Distance	Date	Difference
Passo Fundo	209 km	8 September – 31 March	25 days later
Rivera	214 km	28 September – 23 March	45 days later
Caxias do Sul	261 km	1 September – 30 March	18 days later
Tacuarembó	307 km	14 October – 27 March	61 days later
Chapecó	310 km	12 September – 6 April	29 days later
Posadas	328 km	from 25 July	20 days earlier

Where to buy zucchini plants and seeds near Santa Maria

Buy plants ready to set out from 14 August to 26 March (from 24 July to 26 March for an unheated greenhouse); seed for raising your own is sown from 3 July to 5 March. Within 15 km of Santa Maria OpenStreetMap lists 1 garden centre, 4 farm-supply shops, 1 plant nursery and 5 markets (collected 27 October 2026).

Feira de Produtos Coloniais e Hortifrútis — market
Avenida Roraima · Wed, Sat 06:00–12:00 · 10 km
PoliFeira do Agricultor — market
Thu 12:00–17:30 · 10 km
Floricultura Granja Progresso — plant nursery
9 km · floriculturagranjaprogresso.com
Agroforte — farm supply
1 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.

Questions