Greenly Garden

Last and first frost dates in Greensboro

United States

In Greensboro the last spring frost usually comes around 23 March and the first autumn frost around 13 November, which leaves about 235 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 30 March to 24 July.

Last spring frostaround 23 March
First autumn frostaround 13 November
Frost-free days235 days

Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.

When is the last frost in Greensboro?

The last frost in Greensboro usually comes around 23 March: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 2 March, while corn waits until 30 March. The first autumn frost follows around 13 November, about 235 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha28 January – 5 August9 March – 14 September30 March – 14 September
Ageratumfrom 12 January—from 30 March
Arugula——sow 2 March – 9 October
Basil28 February – 11 September7 April – 19 October28 April – 19 October
Beet——sow 2 March – 14 September
Bell Pepper6 February – 25 May7 April – 24 July28 April – 24 July
Black-eyed Susanfrom 6 January—from 30 March
Bok Choy2 February – 22 September9 March – 27 October30 March – 27 October
Borage——sow 30 March – 19 September
Broad bean——sow 2 March – 5 August
Broccoli——sow 2 March – 29 July
Brussels Sprouts26 December – 26 June9 February – 10 August2 March – 10 August
Busy Lizziefrom 5 January—from 30 March
Cabbage——sow 2 March – 6 July
Calendula——sow from 2 March
Carrot——sow 2 March – 21 August
Cauliflower29 December – 29 July9 February – 9 September2 March – 9 September
Celeriac22 December – 26 May9 March – 11 August30 March – 11 August
Celery22 December – 5 June9 March – 21 August30 March – 21 August
Celosiafrom 30 Januaryfrom 16 Marchfrom 6 April
Chamomile——sow 2 March – 9 September
Chayote11 December – 19 May9 March – 15 August30 March – 15 August
Chickpea——sow 2 March – 26 July
Chicory15 January – 20 August—2 March – 14 September
Chili Pepper6 February – 1 July7 April – 30 August28 April – 30 August
China asterfrom 14 Februaryfrom 7 Aprilfrom 28 April
Chives——sow 2 March – 31 August
Cilantro——sow 2 March – 10 September
Corn——sow 30 March – 26 July
Corn poppy——sow from 2 March
Cosmosfrom 30 Januaryfrom 16 Marchfrom 6 April
Cucumber10 March – 1 August7 April – 29 August28 April – 29 August
Daikon——sow 2 March – 7 September
Delphiniumfrom 12 December—from 2 March
Dill——sow 2 March – 20 September
Edging lobeliafrom 5 January—from 30 March
Eggplant6 February – 25 May7 April – 24 July28 April – 24 July
Florence fennel23 January – 5 August9 March – 19 September30 March – 19 September
Foxglovefrom 24 November—from 2 March
Garden sorrel——sow 2 March – 8 September
Green Beans——sow 6 April – 3 August
Hollyhock——sow from 2 March
Hyssop——sow 2 March – 1 August
Kale——sow 2 March – 2 September
Kiwano5 February – 8 August9 March – 9 September30 March – 9 September
Kohlrabi——sow 2 March – 12 September
Leek1 December – 17 May9 February – 26 July2 March – 26 July
Lemon balm——sow 2 March – 4 September
Lettuce——sow 2 March – 17 September
Lisianthusfrom 14 Novemberfrom 9 Februaryfrom 2 March
Lovage——sow from 2 March
Luffa24 February – 2 June7 April – 14 July28 April – 14 July
Marigoldfrom 26 Januaryfrom 9 Marchfrom 30 March
Marjoram6 February – 20 August—28 April – 19 October
Melon10 March – 19 July7 April – 16 August28 April – 16 August
Microgreens——sow 6 April – 30 October
Moringa18 February – 25 August14 April – 19 October5 May – 19 October
Moss rosefrom 12 January—from 30 March
Mustard greens——sow 2 March – 29 September
Napa cabbage4 February – 30 August9 March – 2 October30 March – 2 October
Nasturtiumfrom 30 Januaryfrom 9 Marchfrom 30 March
Okra24 February – 13 August7 April – 24 September28 April – 24 September
Oregano11 December – 10 August9 February – 9 October2 March – 9 October
Pansyfrom 15 Decemberfrom 9 Februaryfrom 2 March
Parsley——sow 2 March – 29 August
Parsnip——sow 2 March – 18 July
Peanut1 March – 9 July7 April – 15 August28 April – 15 August
Peas——sow 2 March – 31 August
Petuniafrom 3 Februaryfrom 7 Aprilfrom 28 April
Physalis23 January – 6 July9 March – 20 August30 March – 20 August
Pumpkin24 February – 7 June7 April – 19 July28 April – 19 July
Purple coneflowerfrom 9 December—from 2 March
Radish——sow 2 March – 14 October
Sage22 December – 6 August9 February – 24 September2 March – 24 September
Scarlet sagefrom 16 January—from 30 March
Snapdragonfrom 6 Decemberfrom 9 Februaryfrom 2 March
Soybean——sow 28 April – 25 August
Spinach——sow 2 March – 19 September
Stevia19 January – 27 June9 March – 15 August30 March – 15 August
Stock——sow from 2 March
Sunflower——sow from 6 April
Sweet alyssum——sow from 2 March
Sweet Corn15 February – 20 August9 March – 11 September30 March – 11 September
Sweet peafrom 29 Decemberfrom 9 Februaryfrom 2 March
Sweet William——sow from 2 March
Swiss Chard——sow 2 March – 14 September
Thyme——sow 2 March – 26 July
Tomato16 January – 2 June9 March – 24 July30 March – 24 July
Turnip——sow 2 March – 16 September
Watercress——sow 2 March – 27 September
Watermelon10 March – 7 July7 April – 4 August28 April – 4 August
Zinniafrom 10 Marchfrom 14 Aprilfrom 5 May
Zucchini17 March – 6 August7 April – 27 August28 April – 27 August

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day. 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.

When the soil warms up in Greensboro

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo). The soil reaches 10 °C 58 days before the last spring frost and 15 °C 7 days after it.

SoilDateAgainst the last spring frost
5 °Calready in the first week of January—
10 °C24 January58 days earlier
15 °C30 March7 days later
18 °C28 April36 days later

Frost dates near Greensboro

Of the nearest cities on our list, the last spring frost ends earliest in Columbia (9 March) and latest in Asheville (12 April).

CityDistanceLast spring frostFirst autumn frost
Raleigh109 km13 March19 November
Charlotte133 km19 March13 November
Roanoke134 km3 April11 November
Asheville254 km12 April2 November
Columbia256 km9 March29 November

Seeds, seedlings and markets in Greensboro

Within 15 km of Greensboro OpenStreetMap lists 8 garden centres, 1 farm-supply shop, 9 markets and 6 farm shops (collected 29 October 2026). The nearest garden centre to the city centre is Gate City Gardening & Brew, 2 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Greensboro

Frosts in Greensboro usually come from about 13 November to about 23 March. These plants have indoor care in their Greenly cards and are harvested quickly, so they can be sown on a windowsill in winter.

Weather in Greensboro by month

Average weather in Greensboro over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: April–October (21.8–31.9 °C). Months that average 30 °C or more by day: July (31.9 °C). No month averages below 0 °C at night; the coldest nights, in January, average 0.4 °C. About 1160 mm of rain falls in a year, on 122 days; September is the wettest month (126 mm) and November the driest (70 mm).

MonthDay, °CNight, °CRain, mmRainy days
January9.40.49410
February13.43.29310
March17.25.98210
April2210.1959
May25.71511612
June29.718.98611
July31.921.611614
August29.920.410514
September27.317.712610
October21.811.9837
November15.95.8707
December11.52.3948

Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).

Planted in autumn

CropWhen to plant
Bearded Irisby 14 October
Crocusby 14 October
Daffodilby 14 October
Garlic14 October – end of December
Grape hyacinthby 14 October
Helleboreby 14 October
Hyacinthby 14 October
Lilyby 14 October
Ornamental onionby 14 October
Peonyby 14 October
Saffronby 14 October
Snowdropby 14 October
Tulipby 14 October
Wild garlicby 14 October

From a month before the first autumn frost, so the roots grow before winter, to the late-planting limit on each crop’s page (about two weeks before the ground freezes, by ten years of weather).