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Last and first frost dates in Perth (United Kingdom)

United Kingdom

In Perth (United Kingdom) the last spring frost usually comes around 28 April and the first autumn frost around 11 November, which leaves about 197 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 13 June to 22 July.

Last spring frostaround 28 April
First autumn frostaround 11 November
Frost-free days197 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 Perth (United Kingdom)?

The last frost in Perth (United Kingdom) usually comes around 28 April: 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 7 April, while corn waits until 23 May. The first autumn frost follows around 11 November, about 197 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha9 March – 3 August18 April – 12 September9 May – 12 September
Ageratumfrom 28 March—from 13 June
Arugula——sow 7 April – 7 October
Basil21 May – 9 September28 June – 17 October19 July – 17 October
Beet——sow 7 April – 12 September
Bell Pepper29 April – 23 May28 June – 22 July19 July – 22 July
Black-eyed Susanfrom 15 February—from 9 May
Bok Choy14 March – 20 September18 April – 25 October9 May – 25 October
Borage——sow 5 May – 17 September
Broad bean——sow 7 April – 3 August
Broccoli——sow 7 April – 27 July
Brussels Sprouts31 January – 24 June17 March – 8 August7 April – 8 August
Busy Lizziefrom 10 February—from 5 May
Cabbage——sow 7 April – 4 July
Calendula——sow from 7 April
Carrot——sow 7 April – 19 August
Cauliflower3 February – 27 July17 March – 7 September7 April – 7 September
Celeriac31 January – 24 May18 April – 9 August9 May – 9 August
Celery31 January – 3 June18 April – 19 August9 May – 19 August
Celosiafrom 7 Mayfrom 21 Junefrom 12 July
Chamomile——sow 7 April – 7 September
Chayote3 February – 17 May2 May – 13 August23 May – 13 August
Chickpea——sow 7 April – 24 July
Chicory20 February – 18 August—7 April – 12 September
Chili Pepper29 April – 29 June28 June – 28 August19 July – 28 August
China asterfrom 7 Mayfrom 28 Junefrom 19 July
Chives——sow 7 April – 29 August
Cilantro——sow 7 April – 8 September
Corn——sow 23 May – 24 July
Corn poppy——sow from 7 April
Cosmosfrom 7 Mayfrom 21 Junefrom 12 July
Cucumber31 May – 30 July28 June – 27 August19 July – 27 August
Daikon——sow 7 April – 5 September
Delphiniumfrom 17 January—from 7 April
Dill——sow 7 April – 18 September
Edging lobeliafrom 14 February—from 9 May
Eggplant29 April – 23 May28 June – 22 July19 July – 22 July
Florence fennel4 March – 3 August18 April – 17 September9 May – 17 September
Foxglovefrom 30 December—from 7 April
Garden sorrel——sow 7 April – 6 September
Green Beans——sow 12 July – 1 August
Hollyhock——sow from 7 April
Hyssop——sow 7 April – 30 July
Kale——sow 7 April – 31 August
Kiwano21 April – 6 August23 May – 7 September13 June – 7 September
Kohlrabi——sow 7 April – 10 September
Leek6 January – 15 May17 March – 24 July7 April – 24 July
Lemon balm——sow 7 April – 2 September
Lettuce——sow 7 April – 15 September
Lisianthusfrom 20 Decemberfrom 17 Marchfrom 7 April
Lovage——sow from 7 April
Luffafrom 17 Mayfrom 28 Junefrom 19 July
Marigoldfrom 7 Marchfrom 18 Aprilfrom 9 May
Marjoram29 April – 18 August—19 July – 17 October
Melon31 May – 17 July28 June – 14 August19 July – 14 August
Microgreens——sow 12 July – 28 October
Moringa18 February – 23 August14 April – 17 October5 May – 17 October
Moss rosefrom 17 February—from 5 May
Mustard greens——sow 7 April – 27 September
Napa cabbage16 March – 28 August18 April – 30 September9 May – 30 September
Nasturtiumfrom 11 Marchfrom 18 Aprilfrom 9 May
Okra17 May – 11 August28 June – 22 September19 July – 22 September
Oregano16 January – 8 August17 March – 7 October7 April – 7 October
Pansyfrom 20 Januaryfrom 17 Marchfrom 7 April
Parsley——sow 7 April – 27 August
Parsnip——sow 7 April – 16 July
Peanut22 May – 7 July28 June – 13 August19 July – 13 August
Peas——sow 7 April – 29 August
Petuniafrom 26 Aprilfrom 28 Junefrom 19 July
Physalis8 April – 4 July23 May – 18 August13 June – 18 August
Pumpkin17 May – 17 July28 June – 28 August19 July – 28 August
Purple coneflowerfrom 14 January—from 7 April
Radish——sow 7 April – 12 October
Sage27 January – 4 August17 March – 22 September7 April – 22 September
Scarlet sagefrom 1 April—from 13 June
Snapdragonfrom 11 Januaryfrom 17 Marchfrom 7 April
Soybean——sow 19 July – 23 August
Spinach——sow 7 April – 17 September
Stevia4 April – 25 June23 May – 13 August13 June – 13 August
Stock——sow from 7 April
Sunflower——sow from 12 July
Sweet alyssum——sow from 7 April
Sweet Corn17 April – 18 August9 May – 9 September30 May – 9 September
Sweet peafrom 3 Februaryfrom 17 Marchfrom 7 April
Sweet William——sow from 7 April
Swiss Chard——sow 7 April – 12 September
Thyme——sow 7 April – 24 July
Tomato1 April – 31 May23 May – 22 July13 June – 22 July
Turnip——sow 7 April – 14 September
Watercress——sow 7 April – 25 September
Watermelon31 May – 5 July28 June – 2 August19 July – 2 August
Zinniafrom 10 Marchfrom 14 Aprilfrom 5 May
Zucchini7 June – 4 August28 June – 25 August19 July – 25 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 Perth (United Kingdom)

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 11 days after the last spring frost and 15 °C 46 days after it.

SoilDateAgainst the last spring frost
5 °C12 February75 days earlier
10 °C9 May11 days later
15 °C13 June46 days later
18 °C19 July82 days later

Frost dates near Perth (United Kingdom)

Of the nearest cities on our list, the last spring frost ends earliest in Aberdeen (10 April) and latest in Stirling (29 April).

CityDistanceLast spring frostFirst autumn frost
Dundee29 km28 April12 November
Stirling44 km29 April9 November
Edinburgh52 km28 April9 November
Glasgow79 km28 April11 November
Aberdeen115 km10 April20 November

Seeds, seedlings and markets in Perth (United Kingdom)

Within 15 km of Perth (United Kingdom) OpenStreetMap lists 6 garden centres, 2 farm-supply shops, 1 market and 5 farm shops (collected 28 October 2026). The nearest garden centre to the city centre is Dobbies, 3 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Perth (United Kingdom)

Frosts in Perth (United Kingdom) usually come from about 11 November to about 28 April. 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 Perth (United Kingdom) by month

Average weather in Perth (United Kingdom) over 2016–2025: the warmest month is July. No month averages 20 °C by day; the warmest, July, reaches 18.5 °C. No month averages below 0 °C at night; the coldest nights, in January, average 0.2 °C. About 1100 mm of rain falls in a year, on 173 days; October is the wettest month (129 mm) and April the driest (55 mm).

MonthDay, °CNight, °CRain, mmRainy days
January5.40.28713
February6.50.610115
March8.51.48315
April112.65511
May14.96.37013
June179.18415
July18.510.79815
August17.810.410115
September15.68.58814
October11.9612916
November82.59815
December6.21.310616

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 12 October
Crocus12 October – end of December
Daffodil12 October – end of December
Garlic12 October – end of December
Grape hyacinthby 12 October
Helleboreby 12 October
Hyacinth12 October – end of December
Lilyby 12 October
Ornamental onionby 12 October
Peonyby 12 October
Saffronby 12 October
Snowdropby 12 October
Tulip12 October – end of December
Wild garlicby 12 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).