Wales, UK

Planting calendar for Cardiff

Last frost around 28 March, first frost around 4 December: about 251 frost-free days.

Last frost: 28 March
First frost: 4 December
Frost-free days: 251

Sow now: November

See the whole year

Outdoors

Broad bean
Garlic
Raspberry
Rhubarb

Under cover

Mint

The year at a glance

When each crop can be sown in Cardiff. Tap a crop for exact dates and when it’s ready to harvest.

Sow outdoorsSow under cover (a greenhouse or polytunnel)

When to sow each crop in Cardiff, month by month. Each month says whether you can sow outdoors, under cover, or both.
Crop	JJan	FFeb	MMar	AApr	MMay	JJun	JJul	AAug	SSep	OOct	NNov	DDec
Fruiting
Tomato	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Chilli	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Sweet pepper	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Aubergine	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Courgette	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Cucumber	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Squash	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Sweetcorn	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Roots
Carrot	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Beetroot	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Parsnip	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Radish	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Potato	January: Not this month	February: Plant under cover	March: Plant outdoors and under cover	April: Plant outdoors and under cover	May: Plant outdoors and under cover	June: Plant under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Turnip	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Leaves
Lettuce	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Spinach	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Swiss chard	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Rocket	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Celery	January: Sow under cover	February: Sow outdoors and under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow under cover	June: Not this month	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Beans and peas
Runner bean	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
French bean	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Broad bean	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Not this month	June: Not this month	July: Not this month	August: Not this month	September: Sow under cover	October: Sow outdoors and under cover	November: Sow outdoors and under cover	December: Sow under cover
Pea	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Onion family
Onion	January: Not this month	February: Plant under cover	March: Plant outdoors and under cover	April: Plant outdoors and under cover	May: Plant under cover	June: Not this month	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Garlic	January: Plant under cover	February: Not this month	March: Not this month	April: Not this month	May: Not this month	June: Not this month	July: Not this month	August: Not this month	September: Plant under cover	October: Plant outdoors and under cover	November: Plant outdoors and under cover	December: Plant outdoors and under cover
Leek	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Spring onion	January: Sow under cover	February: Sow outdoors and under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Shallot	January: Plant outdoors and under cover	February: Plant outdoors and under cover	March: Plant outdoors and under cover	April: Plant outdoors and under cover	May: Plant under cover	June: Not this month	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Brassicas
Cabbage	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Broccoli	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Cauliflower	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Brussels sprout	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Kale	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Pak choi	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Herbs
Basil	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Parsley	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Coriander	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Chives	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Mint	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow outdoors and under cover	November: Sow under cover	December: Not this month
Fruit
Strawberry	January: Not this month	February: Plant under cover	March: Plant outdoors and under cover	April: Plant outdoors and under cover	May: Plant outdoors and under cover	June: Plant under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Raspberry	January: Plant outdoors and under cover	February: Plant under cover	March: Not this month	April: Not this month	May: Not this month	June: Not this month	July: Not this month	August: Not this month	September: Not this month	October: Plant under cover	November: Plant outdoors and under cover	December: Plant outdoors and under cover
Rhubarb	January: Plant outdoors and under cover	February: Plant under cover	March: Not this month	April: Not this month	May: Not this month	June: Not this month	July: Not this month	August: Not this month	September: Plant under cover	October: Plant outdoors and under cover	November: Plant outdoors and under cover	December: Plant outdoors and under cover

Fruit rows show when to plant, not sow.

Crop by crop

Fruiting

TomatoOutdoors 23 May to 20 Jun; Under cover 25 Apr to 18 Jul

Sow outdoors: 23 May to 20 Jun
Under cover: 25 Apr to 18 Jul
First harvest: About 103 days after sowing. Sown on 23 May, ready around 3 September.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Tomato across the UK, town by town

ChilliOutdoors 22 May to 20 Jun; Under cover 24 Apr to 18 Jul

Sow outdoors: 22 May to 20 Jun
Under cover: 24 Apr to 18 Jul
First harvest: About 116 days after sowing. Sown on 22 May, ready around 15 September.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Chilli across the UK, town by town

Sweet pepperOutdoors 27 May to 25 Jun; Under cover 29 Apr to 23 Jul

Sow outdoors: 27 May to 25 Jun
Under cover: 29 Apr to 23 Jul
First harvest: About 111 days after sowing. Sown on 27 May, ready around 15 September.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Sweet pepper across the UK, town by town

AubergineOutdoors 27 May to 20 Jun; Under cover 29 Apr to 18 Jul

Sow outdoors: 27 May to 20 Jun
Under cover: 29 Apr to 18 Jul
First harvest: About 112 days after sowing. Sown on 27 May, ready around 16 September.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Aubergine across the UK, town by town

CourgetteOutdoors 22 May to 8 Jul; Under cover 24 Apr to 5 Aug

Sow outdoors: 22 May to 8 Jul
Under cover: 24 Apr to 5 Aug
First harvest: About 61 days after sowing. Sown on 22 May, ready around 22 July.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Courgette across the UK, town by town

CucumberOutdoors 22 May to 8 Jul; Under cover 24 Apr to 5 Aug

Sow outdoors: 22 May to 8 Jul
Under cover: 24 Apr to 5 Aug
First harvest: About 70 days after sowing. Sown on 22 May, ready around 31 July.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Cucumber across the UK, town by town

SquashOutdoors 22 May to 25 Jun; Under cover 24 Apr to 23 Jul

Sow outdoors: 22 May to 25 Jun
Under cover: 24 Apr to 23 Jul
First harvest: About 104 days after sowing. Sown on 22 May, ready around 3 September.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Squash across the UK, town by town

SweetcornOutdoors 16 May to 25 Jun; Under cover 18 Apr to 23 Jul

Sow outdoors: 16 May to 25 Jun
Under cover: 18 Apr to 23 Jul
First harvest: About 98 days after sowing. Sown on 16 May, ready around 22 August.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Sweetcorn across the UK, town by town

Roots

CarrotOutdoors 28 Mar to 24 Jul; Under cover 28 Feb to 21 Aug

Sow outdoors: 28 Mar to 24 Jul
Under cover: 28 Feb to 21 Aug
First harvest: About 105 days after sowing. Sown on 28 March, ready around 11 July.
Warmth: Hardy: grows once days average 7°C.

Carrot across the UK, town by town

BeetrootOutdoors 28 Mar to 10 Aug; Under cover 28 Feb to 7 Sep

Sow outdoors: 28 Mar to 10 Aug
Under cover: 28 Feb to 7 Sep
First harvest: About 75 days after sowing. Sown on 28 March, ready around 11 June.
Warmth: Hardy: grows once days average 7°C.

Beetroot across the UK, town by town

ParsnipOutdoors 7 Mar to 3 Jun; Under cover 7 Feb to 1 Jul

Sow outdoors: 7 Mar to 3 Jun
Under cover: 7 Feb to 1 Jul
First harvest: About 141 days after sowing. Sown on 7 March, ready around 26 July.
Warmth: Hardy: grows once days average 6°C.

Parsnip across the UK, town by town

RadishOutdoors 7 Mar to 28 Sep; Under cover 7 Feb to 26 Oct

Sow outdoors: 7 Mar to 28 Sep
Under cover: 7 Feb to 26 Oct
First harvest: About 32 days after sowing. Sown on 7 March, ready around 8 April.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Radish across the UK, town by town

PotatoOutdoors 7 Mar to 11 May; Under cover 7 Feb to 8 Jun

Plant outdoors: 7 Mar to 11 May
Under cover: 7 Feb to 8 Jun
First harvest: About 111 days after planting. Planted on 7 March, ready around 26 June.
Warmth: Hardy: grows once days average 6°C.

Potato across the UK, town by town

TurnipOutdoors 7 Mar to 28 Aug; Under cover 7 Feb to 25 Sep

Sow outdoors: 7 Mar to 28 Aug
Under cover: 7 Feb to 25 Sep
First harvest: About 68 days after sowing. Sown on 7 March, ready around 14 May.
Warmth: Hardy: grows once days average 6°C.

Turnip across the UK, town by town

Leaves

LettuceOutdoors 13 Mar to 24 Aug; Under cover 13 Feb to 21 Sep

Sow outdoors: 13 Mar to 24 Aug
Under cover: 13 Feb to 21 Sep
First harvest: About 78 days after sowing. Sown on 13 March, ready around 30 May.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Lettuce across the UK, town by town

SpinachOutdoors 7 Mar to 30 Sep; Under cover 7 Feb to 28 Oct

Sow outdoors: 7 Mar to 30 Sep
Under cover: 7 Feb to 28 Oct
First harvest: About 51 days after sowing. Sown on 7 March, ready around 27 April.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Spinach across the UK, town by town

Swiss chardOutdoors 28 Mar to 28 Aug; Under cover 28 Feb to 25 Sep

Sow outdoors: 28 Mar to 28 Aug
Under cover: 28 Feb to 25 Sep
First harvest: About 64 days after sowing. Sown on 28 March, ready around 31 May.
Warmth: Hardy: grows once days average 7°C.

Swiss chard across the UK, town by town

RocketOutdoors 7 Mar to 29 Sep; Under cover 7 Feb to 27 Oct

Sow outdoors: 7 Mar to 29 Sep
Under cover: 7 Feb to 27 Oct
First harvest: About 46 days after sowing. Sown on 7 March, ready around 22 April.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Rocket across the UK, town by town

CeleryOutdoors 11 Feb to 30 Apr; Under cover 14 Jan to 28 May

Sow outdoors: 11 Feb to 30 Apr
Under cover: 14 Jan to 28 May
First harvest: About 152 days after sowing. Sown on 11 February, ready around 13 July.
Warmth: Hardy: grows once days average 5°C.

Celery across the UK, town by town

Beans and peas

Runner beanOutdoors 16 May to 8 Jul; Under cover 18 Apr to 5 Aug

Sow outdoors: 16 May to 8 Jul
Under cover: 18 Apr to 5 Aug
First harvest: About 89 days after sowing. Sown on 16 May, ready around 13 August.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Runner bean across the UK, town by town

French beanOutdoors 16 May to 2 Aug; Under cover 18 Apr to 30 Aug

Sow outdoors: 16 May to 2 Aug
Under cover: 18 Apr to 30 Aug
First harvest: About 71 days after sowing. Sown on 16 May, ready around 26 July.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

French bean across the UK, town by town

Broad beanOutdoors 5 Oct to 3 Dec; Under cover 7 Sep to 31 Dec

Sow outdoors: 5 Oct to 3 Dec
Under cover: 7 Sep to 31 Dec
First harvest: About 220 days after sowing. Sown on 5 October, ready around 13 May.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Broad bean across the UK, town by town

PeaOutdoors 7 Mar to 20 Jun; Under cover 7 Feb to 18 Jul

Sow outdoors: 7 Mar to 20 Jun
Under cover: 7 Feb to 18 Jul
First harvest: About 90 days after sowing. Sown on 7 March, ready around 5 June.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Pea across the UK, town by town

Onion family

OnionOutdoors 27 Feb to 30 Apr; Under cover 30 Jan to 28 May

Plant outdoors: 27 Feb to 30 Apr
Under cover: 30 Jan to 28 May
First harvest: About 153 days after planting. Planted on 27 February, ready around 30 July.
Warmth: Hardy: grows once days average 6°C.

Onion across the UK, town by town

GarlicOutdoors 5 Oct to 17 Dec; Under cover 7 Sep to 14 Jan

Plant outdoors: 5 Oct to 17 Dec
Under cover: 7 Sep to 14 Jan
First harvest: About 250 days after planting. Planted on 5 October, ready around 12 June.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Garlic across the UK, town by town

LeekOutdoors 7 Mar to 8 Jul; Under cover 7 Feb to 5 Aug

Sow outdoors: 7 Mar to 8 Jul
Under cover: 7 Feb to 5 Aug
First harvest: About 160 days after sowing. Sown on 7 March, ready around 14 August.
Warmth: Hardy: grows once days average 6°C.

Leek across the UK, town by town

Spring onionOutdoors 11 Feb to 17 Sep; Under cover 14 Jan to 15 Oct

Sow outdoors: 11 Feb to 17 Sep
Under cover: 14 Jan to 15 Oct
First harvest: About 88 days after sowing. Sown on 11 February, ready around 10 May.
Warmth: Hardy: grows once days average 5°C.

Spring onion across the UK, town by town

ShallotOutdoors 25 Jan to 30 Apr; Under cover 28 Dec to 28 May

Plant outdoors: 25 Jan to 30 Apr
Under cover: 28 Dec to 28 May
First harvest: About 165 days after planting. Planted on 25 January, ready around 9 July.
Warmth: Hardy: grows once days average 5°C.

Shallot across the UK, town by town

Brassicas

CabbageOutdoors 7 Mar to 2 Aug; Under cover 7 Feb to 30 Aug

Sow outdoors: 7 Mar to 2 Aug
Under cover: 7 Feb to 30 Aug
First harvest: About 121 days after sowing. Sown on 7 March, ready around 6 July.
Warmth: Hardy: grows once days average 6°C.

Cabbage across the UK, town by town

BroccoliOutdoors 28 Mar to 8 Jul; Under cover 28 Feb to 5 Aug

Sow outdoors: 28 Mar to 8 Jul
Under cover: 28 Feb to 5 Aug
First harvest: About 95 days after sowing. Sown on 28 March, ready around 1 July.
Warmth: Hardy: grows once days average 7°C.

Broccoli across the UK, town by town

CauliflowerOutdoors 7 Mar to 20 Jun; Under cover 7 Feb to 18 Jul

Sow outdoors: 7 Mar to 20 Jun
Under cover: 7 Feb to 18 Jul
First harvest: About 131 days after sowing. Sown on 7 March, ready around 16 July.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Cauliflower across the UK, town by town

Brussels sproutOutdoors 7 Mar to 16 May; Under cover 7 Feb to 13 Jun

Sow outdoors: 7 Mar to 16 May
Under cover: 7 Feb to 13 Jun
First harvest: About 185 days after sowing. Sown on 7 March, ready around 8 September.
Warmth: Hardy: grows once days average 6°C.

Brussels sprout across the UK, town by town

KaleOutdoors 28 Mar to 5 Aug; Under cover 28 Feb to 2 Sep

Sow outdoors: 28 Mar to 5 Aug
Under cover: 28 Feb to 2 Sep
First harvest: About 85 days after sowing. Sown on 28 March, ready around 21 June.
Warmth: Hardy: grows once days average 7°C.

Kale across the UK, town by town

Pak choiOutdoors 13 Apr to 13 Sep; Under cover 16 Mar to 11 Oct

Sow outdoors: 13 Apr to 13 Sep
Under cover: 16 Mar to 11 Oct
First harvest: About 47 days after sowing. Sown on 13 April, ready around 30 May.
Warmth: Hardy: grows once days average 8°C; bolts in hot weather.

Pak choi across the UK, town by town

Herbs

BasilOutdoors 13 Apr to 2 Aug; Under cover 16 Mar to 30 Aug

Sow outdoors: 13 Apr to 2 Aug
Under cover: 16 Mar to 30 Aug
First harvest: About 65 days after sowing. Sown on 13 April, ready around 17 June.
Warmth: Tender: needs days averaging 8°C or more, and no frost.

Basil across the UK, town by town

ParsleyOutdoors 7 Mar to 30 Aug; Under cover 7 Feb to 27 Sep

Sow outdoors: 7 Mar to 30 Aug
Under cover: 7 Feb to 27 Sep
First harvest: About 84 days after sowing. Sown on 7 March, ready around 30 May.
Warmth: Hardy: grows once days average 6°C.

Parsley across the UK, town by town

CorianderOutdoors 28 Mar to 13 Sep; Under cover 28 Feb to 11 Oct

Sow outdoors: 28 Mar to 13 Sep
Under cover: 28 Feb to 11 Oct
First harvest: About 54 days after sowing. Sown on 28 March, ready around 21 May.
Warmth: Hardy: grows once days average 7°C; bolts in hot weather.

Coriander across the UK, town by town

ChivesOutdoors 7 Mar to 3 Jun; Under cover 7 Feb to 1 Jul

Sow outdoors: 7 Mar to 3 Jun
Under cover: 7 Feb to 1 Jul
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 6°C.

Chives across the UK, town by town

MintOutdoors 28 Mar to 23 Oct; Under cover 28 Feb to 20 Nov

Sow outdoors: 28 Mar to 23 Oct
Under cover: 28 Feb to 20 Nov
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 7°C.

Mint across the UK, town by town

Fruit

StrawberryOutdoors 7 Mar to 16 May; Under cover 7 Feb to 13 Jun

Plant outdoors: 7 Mar to 16 May
Under cover: 7 Feb to 13 Jun
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 6°C.

Strawberry across the UK, town by town

RaspberryOutdoors 10 Nov to 24 Jan; Under cover 13 Oct to 21 Feb

Plant outdoors: 10 Nov to 24 Jan
Under cover: 13 Oct to 21 Feb
First harvest: Crops every year once it’s established.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Raspberry across the UK, town by town

RhubarbOutdoors 21 Oct to 24 Jan; Under cover 23 Sep to 21 Feb

Plant outdoors: 21 Oct to 24 Jan
Under cover: 23 Sep to 21 Feb
First harvest: Crops every year once it’s established.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Rhubarb across the UK, town by town

Nearby

Also covers

Bridgend, and nearby villages. Dates are within a few days across the area.

Questions about growing in Cardiff

When is the last frost in Cardiff?

On average around 28 March, and the first autumn frost comes around 4 December. In a cold spring a frost can come a week or two late, so tender plants are safest out a week after the date.

Can I grow tomatoes outdoors in Cardiff?

Yes. Plant them outdoors 23 May to 20 Jun, or under cover 25 Apr to 18 Jul.

What can I sow in Cardiff in November?

Outdoors: broad bean, garlic, raspberry, rhubarb. Under cover: mint.

How accurate are these dates?

They’re worked out from 30 years of climate data for this spot, adjusted for its height, so they’re a good guide for a typical year. Check the forecast before planting out anything tender.

Get these dates as reminders

Bia turns this calendar into a nudge when it’s time to sow, plant out and harvest, for your plot in Cardiff. Free for 2 months.

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How these dates are worked out: climate records for this spot (ERA5-Land, 1995 to 2024), the local frost dates and the height above sea level turn a seed-packet date into a local one. Contains modified Copernicus Climate Change Service information; towns from GeoNames (CC BY 4.0). How sowing dates work