When to plant tomatoes in Worcester (United States): 20 May – 19 July

In Worcester (United States), tomato: sow for seedlings from 8 March to 28 May; plant into a greenhouse from 29 April to 19 July; plant out into open ground from 20 May to 19 July. For plants and seeds, the places nearby include The Plant Ward (garden centre, 4 km) and Marston Greenhouses (garden centre, 10 km); addresses and opening hours are below.

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

In Worcester (United States) the soil, not frost, sets the date: the last frost is over around 11 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 20 May, 39 days later.

Last spring frost	11 April
Top 7 cm of soil at 15 °C	20 May, 39 days after the last frost
Into an unheated greenhouse	29 April – 19 July; April outside: 3.5 °C at night, 13.8 °C by day; card 16–27 °C
First autumn frost	8 November, 172 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	29 July – 27 September
Days left for picking	102
Daylight	12:33 on 29 March, 14:44 on 20 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 8 rainy days

Tomato in Worcester (United States): care after planting

Planted on 20 May: in the first weeks water every 4 days.

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

20 May — feed: balanced (NPK)
17 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 Worcester (United States) during the tomato season

Days average above the tomato card's 16–27 °C in July (28.6 °C) and August (27.4 °C). Months that stay below 16 °C even by day on average: November (9.9 °C). Nights average below 16 °C in May, June and September–November (1.8–14.9 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.9	9.4	101	13	14:34
June	25.5	14.9	88	12	15:15
July	28.6	18.6	130	14	14:59
August	27.4	17.7	85	11	13:56
September	23.1	14.2	115	10	12:32
October	17	8.6	114	10	11:07
November	9.9	1.8	81	8	9:49

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Worcester (United States), Providence is 3 days earlier and Concord 2 days later.

City	Distance	Date	Difference
Providence	60 km	17 May – 19 July	3 days earlier
Boston	62 km	19 May – 24 July	1 day earlier
Manchester (United States)	85 km	20 May – 13 July	same day
Hartford	93 km	19 May – 19 July	1 day earlier
Concord	107 km	22 May – 11 July	2 days later
New Haven	141 km	17 May – 23 July	3 days earlier

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

Buy plants ready to set out from 20 May to 19 July (from 29 April to 19 July for an unheated greenhouse); seed for raising your own is sown from 8 March to 28 May. Within 15 km of Worcester (United States) OpenStreetMap lists 3 garden centres, 1 plant nursery, 5 markets and 4 farm shops (collected 28 October 2026).

Busy Bee Landscape & Garden Center — garden centre
Broad Street 58 · Mon–Sat 08:00–17:00; Sun 10:00–17:00 · 14 km
The Plant Ward — garden centre
Pleasant Street 1102A, 01602 Worcester · 4 km
Marston Greenhouses — garden centre
Broad Street 275 · 10 km
Holden Farmer's Market — market
Main Street 1174, 01520 Holden · May–Oct Tue 15:00–18:30 · 10 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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