When to plant zucchini in Hartford: 31 May – 22 August

In Hartford, zucchini: sow for seedlings from 19 April to 1 August; plant into a greenhouse from 10 May to 22 August; plant out into open ground from 31 May to 22 August. For plants and seeds, the places nearby include E. Draghi & Sons Farm Stand (farm shop, 15 km); addresses and opening hours are below.

Zucchini in Hartford: soil, season and weather

In Hartford the soil, not frost, sets the date: the last frost is over around 13 April, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 31 May, 48 days later.

Last spring frost	13 April
Top 7 cm of soil at 18 °C	31 May, 48 days after the last frost
First autumn frost	8 November, 161 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	6 July – 27 September
Days left for picking	125
Daylight	14:21 on 10 May, 14:58 on 31 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, June, has 12 rainy days

The same dates in Hartford hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Hartford: care after planting

Planted on 31 May: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Hartford during the zucchini season

About 767 mm of rain falls in the season; June is the driest month (82 mm) and July the wettest (141 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.8	9.9	114	13	14:31
June	26.5	15.2	82	12	15:12
July	29.5	19	141	14	14:56
August	28.1	18.1	95	11	13:54
September	24.1	14.5	127	9	12:32
October	18.1	8.9	126	11	11:08
November	10.8	1.9	82	9	9:51

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

2 of the nearest cities share Hartford's date.

City	Distance	Date	Difference
New Haven	54 km	26 May – 26 August	5 days earlier
Worcester (United States)	93 km	31 May – 22 August	same day
Providence	106 km	31 May – 22 August	same day
Albany	133 km	30 May – 20 August	1 day earlier
Boston	150 km	29 May – 27 August	2 days earlier
New York	161 km	21 May – 3 September	10 days earlier

Where to buy zucchini plants and seeds near Hartford

Buy plants ready to set out from 31 May to 22 August (from 10 May to 22 August for an unheated greenhouse); seed for raising your own is sown from 19 April to 1 August. Within 15 km of Hartford OpenStreetMap lists 10 garden centres, 1 farm-supply shop, 1 plant nursery, 5 markets and 11 farm shops (collected 20 October 2026).

E. Draghi & Sons Farm Stand — farm shop
Main Street 80, 06073 Glastonbury · 15 km
Home Depot Garden Center — garden centre
6 km
The Home Depot Garden Center — garden centre
13 km
Cedar Mountain Stone & Mulch — garden centre
7 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