When to plant tomatoes in Augusta: 27 May – 14 July

In Augusta, tomato: sow for seedlings from 15 March to 23 May; plant into a greenhouse from 6 May to 14 July; plant out into open ground from 27 May to 14 July. For plants and seeds, the places nearby include Longfellow's Greenhouses (garden centre, 7 km); addresses and opening hours are below.

Tomato in Augusta: soil, season and weather

In Augusta the soil, not frost, sets the date: the last frost is over around 23 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 27 May, 34 days later.

Last spring frost	23 April
Top 7 cm of soil at 15 °C	27 May, 34 days after the last frost
Into an unheated greenhouse	6 May – 14 July; May outside: 7.9 °C at night, 18.3 °C by day; card 16–27 °C
First autumn frost	3 November, 160 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	5 August – 22 September
Days left for picking	90
Daylight	12:56 on 5 April, 15:09 on 27 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 9 rainy days

Tomato in Augusta: care after planting

Planted on 27 May: in the first weeks water every 4 days.

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

27 May — feed: balanced (NPK)
24 June — 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 Augusta during the tomato season

Days average above the tomato card's 16–27 °C in July (27.3 °C). Months that stay below 16 °C even by day on average: October (15.5 °C) and November (7.7 °C). Nights average below 16 °C in May, June and September–November (0.1–13.5 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	18.3	7.9	85	11	14:46
June	23.7	13.5	98	12	15:30
July	27.3	17.6	88	11	15:13
August	26.2	16.8	97	11	14:04
September	22.2	13.2	82	9	12:34
October	15.5	7.4	125	10	11:03
November	7.7	0.1	90	10	9:38

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Augusta, Manchester (United States) is 7 days earlier and Bangor 4 days later.

City	Distance	Date	Difference
Portland, Maine	82 km	28 May – 15 July	1 day later
Bangor	101 km	31 May – 14 July	4 days later
Concord	187 km	22 May – 11 July	5 days earlier
Manchester (United States)	200 km	20 May – 13 July	7 days earlier
Sherbrooke	206 km	27 May – 7 July	same day
Montpelier	221 km	29 May – 27 June	2 days later

Where to buy tomato plants and seeds near Augusta

Buy plants ready to set out from 27 May to 14 July (from 6 May to 14 July for an unheated greenhouse); seed for raising your own is sown from 15 March to 23 May. Within 15 km of Augusta OpenStreetMap lists 2 garden centres and 3 markets (collected 28 October 2026).

Longfellow's Greenhouses — garden centre
Puddledock Road 81, 04351 Manchester · Mon–Sun 08:00–17:00 · 7 km
Hallowell Seafood and Produce — market
Water Street 197, 04347 Hallowell · Mon–Sun 08:00–18:00 · 3 km · hallowellseafoodandproduce.com
Emery's Meat and Produce — market
Bridge Street 35, 04345 Gardiner · 9 km · emerysmeatandproduce.com
Al Naeem Market — market
Water Street 339, 04330 Augusta · 1 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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