Greenly Garden

When to plant tomatoes in Wellington: from 22 November

In Wellington, tomato: sow for seedlings from 10 September; plant into a greenhouse from 1 November; plant out into open ground from 22 November. There is no autumn frost here, so the frost dates set no end to the window. For plants and seeds, the places nearby include Red Barn Supply Company (farm supply, 9 km); addresses and opening hours are below.

Tomato in Wellington: soil, season and weather

In Wellington the soil, not frost, sets the date: the last frost is over around 17 August, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 22 November, 97 days later. Wellington has no autumn frost in the median year, so frost does not end the season.

Last spring frost17 August
Top 7 cm of soil at 15 °C22 November, 97 days after the last frost
Into an unheated greenhousefrom 1 November; November outside: 10.4 °C at night, 15.3 °C by day; card 16–27 °C
Days in the bed to the first harvest (card)70
First harvest, if planted in this windowfrom 31 January
Daylight12:30 on 1 October, 14:40 on 22 November
Watering outdoors when fruiting (card)every 3 days; the driest month, January, has 8 rainy days

Tomato in Wellington: care after planting

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

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

  • 22 November — feed: balanced (NPK)
  • 20 December — feed: nitrogen

Pests and diseases of tomato 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 Wellington during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, January, averages 18.7 °C. Months that stay below 16 °C even by day on average: November (15.3 °C) and April (15.2 °C). Nights average below 16 °C in every month of the season, from 10.4 °C to 13.1 °C.

MonthDay, °CNight, °CRain, mmRainy daysDaylight on the 15th
November15.310.4911214:26
December17.111.9951315:08
January18.71345814:49
February18.713.182813:41
March17.112.179912:25
April15.210.41041011:00

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Wellington, Napier is 42 days earlier and Rotorua 4 days later.

CityDistanceDateDifference
Blenheim73 km30 October – 8 February23 days earlier
Palmerston North125 km29 October – 29 February24 days earlier
Nelson125 km11 November – 29 February11 days earlier
Napier269 kmfrom 11 October42 days earlier
Christchurch305 km30 October – 13 February23 days earlier
Rotorua372 km26 November – 3 February4 days later

Where to buy tomato plants and seeds near Wellington

Buy plants ready to set out from 22 November (from 1 November for an unheated greenhouse); seed for raising your own is sown from 10 September. Within 15 km of Wellington OpenStreetMap lists 2 garden centres, 1 farm-supply shop, 2 plant nurseries and 3 markets (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant tomatoes in Wellington?

In Wellington, tomato: sow for seedlings from 10 September; plant into a greenhouse from 1 November; plant out into open ground from 22 November. There is no autumn frost here, so the frost dates set no end to the window.

When to sow tomatoes for seedlings in Wellington?

Sow for seedlings from 10 September.

Other crops in Wellington, with their dates