When to plant tomatoes in Devonport: 22 November – 5 March

In Devonport, tomato: sow for seedlings from 10 September to 13 January; plant into a greenhouse from 1 November to 5 March; plant out into open ground from 22 November to 5 March. For plants and seeds, the places nearby include Plants Plus Nursery Devonport (plant nursery, 0 km) and Big Pot Nursery (garden centre, 11 km); addresses and opening hours are below.

Tomato in Devonport: soil, season and weather

In Devonport the soil, not frost, sets the date: the last frost is over around 23 August, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 22 November, 91 days later.

Last spring frost	23 August
Top 7 cm of soil at 15 °C	22 November, 91 days after the last frost
Into an unheated greenhouse	1 November – 5 March; November outside: 9.7 °C at night, 18.8 °C by day; card 16–27 °C
First autumn frost	25 June, 216 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	31 January – 14 May
Days left for picking	146
Daylight	12:30 on 1 October, 14:39 on 22 November
Watering outdoors when fruiting (card)	every 3 days; the driest month, February, has 7 rainy days

Tomato in Devonport: 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 Devonport during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, January, averages 23.4 °C. Months that stay below 16 °C even by day on average: May (14.8 °C) and June (12.7 °C). Nights average below 16 °C in every month of the season, from 5.8 °C to 13.3 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
November	18.8	9.7	73	11	14:25
December	21	11.1	63	10	15:07
January	23.4	13.3	73	10	14:49
February	22.2	12.7	52	7	13:41
March	20.9	11.8	67	9	12:25
April	17.7	9.4	73	9	11:01
May	14.8	7.4	84	11	9:51
June	12.7	5.8	107	11	9:13

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

All the nearest cities on our list plant tomato earlier than Devonport; the closest date is in Ballarat, 8 days earlier.

City	Distance	Date	Difference
Launceston	71 km	7 November – 16 February	15 days earlier
Geelong	378 km	from 22 October	31 days earlier
Melbourne	393 km	21 October – 4 March	32 days earlier
Ballarat	455 km	14 November – 27 February	8 days earlier
Bendigo	523 km	21 October – 27 February	32 days earlier
Albury	570 km	16 October – 28 February	37 days earlier

Where to buy tomato plants and seeds near Devonport

Buy plants ready to set out from 22 November to 5 March (from 1 November to 5 March for an unheated greenhouse); seed for raising your own is sown from 10 September to 13 January. Within 15 km of Devonport OpenStreetMap lists 1 garden centre and 1 plant nursery (collected 28 October 2026).

Big Pot Nursery — garden centre
Melrose Road 1032, 7310 · 11 km
Plants Plus Nursery Devonport — plant nursery
Steele Street 147-149, 7310 · 0 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.

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