When to plant tomatoes in Syracuse (United States): 22 May – 17 July

In Syracuse (United States), tomato: sow for seedlings from 10 March to 26 May; plant into a greenhouse from 1 May to 17 July; plant out into open ground from 22 May to 17 July. For plants and seeds, the places nearby include HTG Supply (garden centre, 2 km) and EverGreen Landscaping & Garden Center (garden centre, 5 km); addresses and opening hours are below.

Tomato in Syracuse (United States): soil, season and weather

In Syracuse (United States) the soil, not frost, sets the date: the last frost is over around 28 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 22 May, 24 days later.

Last spring frost	28 April
Top 7 cm of soil at 15 °C	22 May, 24 days after the last frost
Into an unheated greenhouse	1 May – 17 July; May outside: 9.2 °C at night, 19.5 °C by day; card 16–27 °C
First autumn frost	6 November, 168 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	31 July – 25 September
Days left for picking	98
Daylight	12:39 on 31 March, 14:52 on 22 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 10 rainy days

Tomato in Syracuse (United States): care after planting

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

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

22 May — feed: balanced (NPK)
19 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 Syracuse (United States) during the tomato season

Days average above the tomato card's 16–27 °C in July (27.2 °C). Months that stay below 16 °C even by day on average: November (8.2 °C). Nights average below 16 °C in May, June and September–November (1.1–14.7 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.5	9.2	108	14	14:38
June	24.4	14.7	111	14	15:21
July	27.2	18	126	14	15:04
August	25.6	17.2	131	14	13:59
September	22.5	13.7	89	10	12:33
October	16.3	8.2	129	15	11:06
November	8.2	1.1	103	16	9:45

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Syracuse (United States), Albany is 3 days earlier and Ottawa 5 days later.

City	Distance	Date	Difference
Ithaca	74 km	24 May – 19 July	2 days later
Rochester	121 km	20 May – 23 July	2 days earlier
Albany	199 km	19 May – 17 July	3 days earlier
Buffalo	224 km	20 May – 21 July	2 days earlier
Ottawa	266 km	27 May – 12 July	5 days later
Toronto	270 km	20 May – 10 July	2 days earlier

Where to buy tomato plants and seeds near Syracuse (United States)

Buy plants ready to set out from 22 May to 17 July (from 1 May to 17 July for an unheated greenhouse); seed for raising your own is sown from 10 March to 26 May. Within 15 km of Syracuse (United States) OpenStreetMap lists 7 garden centres, 1 plant nursery, 3 markets and 7 farm shops (collected 29 October 2026).

EverGreen Landscaping & Garden Center — garden centre
Thompson Road 6278, 13206 Syracuse · Mon–Fri 09:00–17:00; Sat 09:00–18:00; Sun 10:00–16:00 · 5 km · evergreensyracuse.com
Plumpton Farms — garden centre
Coye Road 3990, 13078 Jamesville · 09:00–17:30 · 11 km · plumptonfarms.com
Chuck Hafner's Farmer's Market and Garden Center — garden centre
Buckley Road 7265, 13212 North Syracuse · 8 km · chuckhafner.com
HTG Supply — garden centre
Erie Boulevard East 2043, 13224 Syracuse · 2 km · htgsupply.com

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