When to plant zucchini in Caxias do Sul: 1 September – 30 March

In Caxias do Sul, zucchini: sow for seedlings from 21 July to 9 March; plant into a greenhouse from 11 August to 30 March; plant out into open ground from 1 September to 30 March.

Zucchini in Caxias do Sul: soil, season and weather

In Caxias do Sul the soil, not frost, sets the date: the last frost is over around 13 July, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 1 September, 50 days later.

Last spring frost	13 July
Top 7 cm of soil at 18 °C	1 September, 50 days after the last frost
First autumn frost	16 June, 289 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	7 October – 5 May
Days left for picking	253
Daylight	10:57 on 11 August, 11:30 on 1 September
Watering outdoors when fruiting (card)	every 3 days; the driest month, April, has 14 rainy days

The same dates in Caxias do Sul hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Caxias do Sul: care after planting

Planted on 1 September: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Caxias do Sul during the zucchini season

About 1609 mm of rain falls in the season; April is the driest month (125 mm) and May the wettest (199 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
September	21.5	12	176	14	11:54
October	22.3	13.2	187	16	12:46
November	24.3	14.4	154	14	13:34
December	26.4	16.8	149	17	14:00
January	27.1	18.3	167	20	13:48
February	26.7	17.9	136	15	13:06
March	25.2	17	150	16	12:18
April	22.8	14.6	125	14	11:24
May	19.1	11.6	199	14	10:41
June	17.6	9.8	166	12	10:17

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Caxias do Sul, Santa Maria is 18 days earlier and Lages 23 days later.

City	Distance	Date	Difference
Passo Fundo	157 km	8 September – 31 March	7 days later
Lages	172 km	24 September – 6 April	23 days later
Santa Maria	261 km	14 August – 26 March	18 days earlier
Chapecó	270 km	12 September – 6 April	11 days later
Guarapuava	421 km	22 September – 6 April	21 days later
Curitiba	457 km	from 3 September	2 days later

Where to buy zucchini plants and seeds near Caxias do Sul

Buy plants ready to set out from 1 September to 30 March (from 11 August to 30 March for an unheated greenhouse); seed for raising your own is sown from 21 July to 9 March. Within 15 km of Caxias do Sul OpenStreetMap lists 14 farm-supply shops, 3 markets and 2 farm shops (collected 27 October 2026).

BenVenutte — market
11 km
Banca Marchi Produtos Coloniais — farm shop
9 km
Banasouza Comércio de Bananas — farm shop
7 km
Agropecuária Casa Ruscello — farm supply
11 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