When to plant tomatoes in Charlottetown: 13 June – 13 July

In Charlottetown, tomato: sow for seedlings from 1 April to 22 May; plant into a greenhouse from 23 May to 13 July; plant out into open ground from 13 June to 13 July.

Tomato in Charlottetown: soil, season and weather

In Charlottetown the soil, not frost, sets the date: the last frost is over around 10 May, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 13 June, 34 days later.

Last spring frost	10 May
Top 7 cm of soil at 15 °C	13 June, 34 days after the last frost
Into an unheated greenhouse	23 May – 13 July; May outside: 4.8 °C at night, 13.9 °C by day; card 16–27 °C
First autumn frost	2 November, 142 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	22 August – 21 September
Days left for picking	72
Daylight	13:54 on 22 April, 15:44 on 13 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 12 rainy days

Tomato in Charlottetown: care after planting

Planted on 13 June: in the first weeks water every 4 days.

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

13 June — feed: balanced (NPK)
11 July — 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 Charlottetown during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 23.9 °C. Months that stay below 16 °C even by day on average: October (13.8 °C) and November (6.8 °C). Nights average below 16 °C in June and August–November (0.5–15.9 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	19.8	11.3	104	11	15:46
July	23.9	16.1	88	12	15:27
August	23.5	15.9	93	12	14:12
September	19.5	12.2	89	10	12:36
October	13.8	7	105	10	10:59
November	6.8	0.5	134	14	9:28

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Charlottetown, Augusta is 17 days earlier and Halifax 6 days later.

City	Distance	Date	Difference
Moncton	130 km	9 June – 15 July	4 days earlier
Halifax	179 km	19 June – 20 July	6 days later
Fredericton	275 km	5 June – 8 July	8 days earlier
Bangor	464 km	31 May – 14 July	13 days earlier
Augusta	562 km	27 May – 14 July	17 days earlier
Quebec City	621 km	27 May – 8 July	17 days earlier

Where to buy tomato plants and seeds near Charlottetown

Buy plants ready to set out from 13 June to 13 July (from 23 May to 13 July for an unheated greenhouse); seed for raising your own is sown from 1 April to 22 May. Within 15 km of Charlottetown OpenStreetMap lists 1 farm shop (collected 20 October 2026).

Freshest Fruits and Vegetables — farm shop
2 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