When to plant cucumbers in Pretoria: from 24 August

In Pretoria, cucumber: sow for seedlings from 6 July; plant into a greenhouse from 3 August; plant out into open ground from 24 August. There is no autumn frost here, so the frost dates set no end to the window. For plants and seeds, the places nearby include Die Tuinhoekie (plant nursery, 5 km); addresses and opening hours are below.

Cucumber in Pretoria: soil, season and weather

In Pretoria the soil, not frost, sets the date: the last frost is over around 23 July, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 24 August, 32 days later. Pretoria has no autumn frost in the median year, so frost does not end the season.

Last spring frost	23 July
Top 7 cm of soil at 18 °C	24 August, 32 days after the last frost
Into an unheated greenhouse	from 3 August; August outside: 8.1 °C at night, 23 °C by day; card 18–25 °C
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	from 27 September
Daylight	10:50 on 27 July, 11:24 on 24 August
Watering outdoors when fruiting (card)	every 2 days; the driest month, August, has 1 rainy day

The same dates in Pretoria hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in Pretoria: care after planting

Planted on 24 August: in the first weeks water every 4 days.

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

31 August — feed: nitrogen

Pests and diseases of cucumber 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 Pretoria during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, January, averages 27.9 °C. Nights average below 18 °C in every month of the season, from 8.1 °C to 16.4 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
August	23	8.1	3	1	11:12
September	27	11.5	13	3	11:55
October	27.8	13.3	44	7	12:40
November	27.6	14.8	87	11	13:22
December	27.5	16.2	112	15	13:44
January	27.9	16.4	100	12	13:34

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

All the nearest cities on our list plant cucumber later than Pretoria; the closest date is in Caxias do Sul, 8 days later.

City	Distance	Date	Difference
Johannesburg	52 km	6 September – 20 March	13 days later
Bloemfontein	423 km	14 September – 19 March	21 days later
Curitiba	7,640 km	from 3 September	10 days later
Lages	7,652 km	24 September – 8 April	31 days later
Caxias do Sul	7,683 km	1 September – 1 April	8 days later
Ponta Grossa	7,737 km	4 September – 9 April	11 days later

Where to buy cucumber plants and seeds near Pretoria

Buy plants ready to set out from 24 August (from 3 August for an unheated greenhouse); seed for raising your own is sown from 6 July. Within 15 km of Pretoria OpenStreetMap lists 15 garden centres, 6 plant nurseries and 3 markets (collected 20 October 2026).

Die Tuinhoekie — plant nursery
Pierneef Street 902, 0186 Pretoria · 5 km
Farmers' Market — market
5:30 - 9:00 · 12 km · pretoriaboeremark.co.za
Kilnerpark Kwekery — garden centre
8 km
Prosper Garden Centre — garden centre
12 km

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