When to plant zucchini in Guarapuava: 22 September – 6 April

In Guarapuava, zucchini: sow for seedlings from 11 August to 16 March; plant into a greenhouse from 1 September to 6 April; plant out into open ground from 22 September to 6 April. For plants and seeds, the places nearby include Master Campus (farm supply, 5 km); addresses and opening hours are below.

Zucchini in Guarapuava: soil, season and weather

In Guarapuava the soil, not frost, sets the date: the last frost is over around 5 August, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 22 September, 48 days later.

Last spring frost	5 August
Top 7 cm of soil at 18 °C	22 September, 48 days after the last frost
First autumn frost	23 June, 275 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	28 October – 12 May
Days left for picking	239
Daylight	11:35 on 1 September, 12:06 on 22 September
Watering outdoors when fruiting (card)	every 3 days; the driest month, April, has 9 rainy days

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

Zucchini in Guarapuava: care after planting

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

Pests and diseases of zucchini to watch for:

Weather in Guarapuava during the zucchini season

About 1593 mm of rain falls in the season; April is the driest month (103 mm) and October the wettest (232 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
September	22.6	12.5	127	10	11:55
October	22.5	13.5	232	17	12:40
November	23.6	14	139	13	13:21
December	24.7	15.7	178	18	13:42
January	24.5	16.5	216	21	13:33
February	24.5	16.3	157	18	12:57
March	24	15.8	140	17	12:16
April	22.1	13.4	103	9	11:30
May	19.3	11	146	11	10:54
June	17.9	9.7	155	10	10:34

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Guarapuava, Cascavel is 59 days earlier and Lages 2 days later.

City	Distance	Date	Difference
Ponta Grossa	136 km	4 September – 7 April	18 days earlier
Cascavel	206 km	25 July – 11 April	59 days earlier
Curitiba	221 km	from 3 September	19 days earlier
Chapecó	222 km	12 September – 6 April	10 days earlier
Lages	293 km	24 September – 6 April	2 days later
Passo Fundo	332 km	8 September – 31 March	14 days earlier

Where to buy zucchini plants and seeds near Guarapuava

Buy plants ready to set out from 22 September to 6 April (from 1 September to 6 April for an unheated greenhouse); seed for raising your own is sown from 11 August to 16 March. Within 15 km of Guarapuava OpenStreetMap lists 1 farm-supply shop, 1 plant nursery and 1 market (collected 27 October 2026).

Master Campus — farm supply
BR-277 2540, 85030-230 Guarapuava - PR · Mon–Sat 08:00–18:00 · 5 km
Matilde — market
Rua Fredolin Worn · 2 km
Horta Dalpozzo — plant nursery
3 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