Northern Ireland, UK

Planting calendar for Carrickfergus

Last frost around 5 March, first frost around 20 December: about 290 frost-free days.

Last frost: 5 March
First frost: 20 December
Frost-free days: 290

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 Carrickfergus. 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 Carrickfergus, 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 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: 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
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
AubergineUnder cover only	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow 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
Courgette	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 outdoors and under cover	August: Sow under cover	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: Not this month	May: Sow 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
Squash	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
Sweetcorn	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
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 under cover	September: Not this month	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 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
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 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
Beans and peas
Runner bean	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 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: Not this month	May: Sow 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 outdoors and 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 outdoors and under cover	August: Sow under cover	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 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
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 outdoors and 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: Sow under cover	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: Not this month	November: Not this month	December: Not this month
Shallot	January: Plant under cover	February: Plant outdoors and 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
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: Sow under cover	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 outdoors and under cover	August: Sow under cover	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 under cover	October: Not this month	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 under cover	October: Not this month	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 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
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 6 Jun to 21 Jun; Under cover 9 May to 24 May, and 6 Jun to 21 Jun, and 4 Jul to 19 Jul

Sow outdoors: 6 Jun to 21 Jun
Under cover: 9 May to 24 May, and 6 Jun to 21 Jun, and 4 Jul to 19 Jul
First harvest: About 176 days after sowing. Sown on 6 June, ready around 29 November.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Tomato across the UK, town by town

ChilliOutdoors 4 Jun to 16 Jun; Under cover 7 May to 19 May, and 4 Jun to 16 Jun, and 2 Jul to 14 Jul

Sow outdoors: 4 Jun to 16 Jun
Under cover: 7 May to 19 May, and 4 Jun to 16 Jun, and 2 Jul to 14 Jul
First harvest: About 224 days after sowing. Sown on 4 June, ready around 14 January.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Chilli across the UK, town by town

Sweet pepperOutdoors 11 Jun to 21 Jun; Under cover 14 May to 24 May, and 11 Jun to 21 Jun, and 9 Jul to 19 Jul

Sow outdoors: 11 Jun to 21 Jun
Under cover: 14 May to 24 May, and 11 Jun to 21 Jun, and 9 Jul to 19 Jul
First harvest: About 208 days after sowing. Sown on 11 June, ready around 5 January.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Sweet pepper across the UK, town by town

AubergineUnder cover 18 May to 12 Jun

Sow outdoors: Not here: season too short
Under cover: 18 May to 12 Jun
First harvest: About 90 days after sowing. Sown on 18 May, ready around 16 August.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Aubergine across the UK, town by town

CourgetteOutdoors 4 Jun to 29 Jul; Under cover 7 May to 26 Aug

Sow outdoors: 4 Jun to 29 Jul
Under cover: 7 May to 26 Aug
First harvest: About 68 days after sowing. Sown on 4 June, ready around 11 August.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Courgette across the UK, town by town

CucumberOutdoors 4 Jun to 21 Jul; Under cover 7 May to 18 Aug

Sow outdoors: 4 Jun to 21 Jul
Under cover: 7 May to 18 Aug
First harvest: About 81 days after sowing. Sown on 4 June, ready around 24 August.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Cucumber across the UK, town by town

SquashOutdoors 4 Jun to 24 Jun; Under cover 7 May to 22 Jul

Sow outdoors: 4 Jun to 24 Jun
Under cover: 7 May to 22 Jul
First harvest: About 176 days after sowing. Sown on 4 June, ready around 27 November.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Squash across the UK, town by town

SweetcornOutdoors 29 May to 28 Jun; Under cover 1 May to 26 Jul

Sow outdoors: 29 May to 28 Jun
Under cover: 1 May to 26 Jul
First harvest: About 125 days after sowing. Sown on 29 May, ready around 1 October.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Sweetcorn across the UK, town by town

Roots

CarrotOutdoors 5 Apr to 3 Aug; Under cover 8 Mar to 31 Aug

Sow outdoors: 5 Apr to 3 Aug
Under cover: 8 Mar to 31 Aug
First harvest: About 111 days after sowing. Sown on 5 April, ready around 25 July.
Warmth: Hardy: grows once days average 7°C.

Carrot across the UK, town by town

BeetrootOutdoors 5 Apr to 3 Aug; Under cover 8 Mar to 31 Aug

Sow outdoors: 5 Apr to 3 Aug
Under cover: 8 Mar to 31 Aug
First harvest: About 78 days after sowing. Sown on 5 April, ready around 22 June.
Warmth: Hardy: grows once days average 7°C.

Beetroot across the UK, town by town

ParsnipOutdoors 13 Mar to 20 Jun; Under cover 13 Feb to 18 Jul

Sow outdoors: 13 Mar to 20 Jun
Under cover: 13 Feb to 18 Jul
First harvest: About 149 days after sowing. Sown on 13 March, ready around 9 August.
Warmth: Hardy: grows once days average 6°C.

Parsnip across the UK, town by town

RadishOutdoors 13 Mar to 18 Sep; Under cover 13 Feb to 16 Oct

Sow outdoors: 13 Mar to 18 Sep
Under cover: 13 Feb to 16 Oct
First harvest: About 32 days after sowing. Sown on 13 March, ready around 14 April.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Radish across the UK, town by town

PotatoOutdoors 13 Mar to 23 May; Under cover 13 Feb to 20 Jun

Plant outdoors: 13 Mar to 23 May
Under cover: 13 Feb to 20 Jun
First harvest: About 115 days after planting. Planted on 13 March, ready around 6 July.
Warmth: Hardy: grows once days average 6°C.

Potato across the UK, town by town

TurnipOutdoors 13 Mar to 16 Aug; Under cover 13 Feb to 13 Sep

Sow outdoors: 13 Mar to 16 Aug
Under cover: 13 Feb to 13 Sep
First harvest: About 70 days after sowing. Sown on 13 March, ready around 22 May.
Warmth: Hardy: grows once days average 6°C.

Turnip across the UK, town by town

Leaves

LettuceOutdoors 20 Mar to 11 Aug; Under cover 20 Feb to 8 Sep

Sow outdoors: 20 Mar to 11 Aug
Under cover: 20 Feb to 8 Sep
First harvest: About 80 days after sowing. Sown on 20 March, ready around 8 June.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Lettuce across the UK, town by town

SpinachOutdoors 13 Mar to 22 Sep; Under cover 13 Feb to 20 Oct

Sow outdoors: 13 Mar to 22 Sep
Under cover: 13 Feb to 20 Oct
First harvest: About 53 days after sowing. Sown on 13 March, ready around 5 May.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Spinach across the UK, town by town

Swiss chardOutdoors 5 Apr to 16 Aug; Under cover 8 Mar to 13 Sep

Sow outdoors: 5 Apr to 16 Aug
Under cover: 8 Mar to 13 Sep
First harvest: About 66 days after sowing. Sown on 5 April, ready around 10 June.
Warmth: Hardy: grows once days average 7°C.

Swiss chard across the UK, town by town

RocketOutdoors 13 Mar to 20 Sep; Under cover 13 Feb to 18 Oct

Sow outdoors: 13 Mar to 20 Sep
Under cover: 13 Feb to 18 Oct
First harvest: About 47 days after sowing. Sown on 13 March, ready around 29 April.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Rocket across the UK, town by town

CeleryOutdoors 15 Feb to 11 May; Under cover 18 Jan to 8 Jun

Sow outdoors: 15 Feb to 11 May
Under cover: 18 Jan to 8 Jun
First harvest: About 160 days after sowing. Sown on 15 February, ready around 25 July.
Warmth: Hardy: grows once days average 5°C.

Celery across the UK, town by town

Beans and peas

Runner beanOutdoors 29 May to 8 Jul; Under cover 1 May to 5 Aug

Sow outdoors: 29 May to 8 Jul
Under cover: 1 May to 5 Aug
First harvest: About 107 days after sowing. Sown on 29 May, ready around 13 September.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Runner bean across the UK, town by town

French beanOutdoors 29 May to 25 Jul; Under cover 1 May to 22 Aug

Sow outdoors: 29 May to 25 Jul
Under cover: 1 May to 22 Aug
First harvest: About 80 days after sowing. Sown on 29 May, ready around 17 August.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

French bean across the UK, town by town

Broad beanOutdoors 23 Sep to 29 Nov; Under cover 26 Aug to 27 Dec

Sow outdoors: 23 Sep to 29 Nov
Under cover: 26 Aug to 27 Dec
First harvest: About 220 days after sowing. Sown on 23 September, ready around 1 May.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Broad bean across the UK, town by town

PeaOutdoors 13 Mar to 17 Jul; Under cover 13 Feb to 14 Aug

Sow outdoors: 13 Mar to 17 Jul
Under cover: 13 Feb to 14 Aug
First harvest: About 93 days after sowing. Sown on 13 March, ready around 14 June.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Pea across the UK, town by town

Onion family

OnionOutdoors 5 Mar to 11 May; Under cover 5 Feb to 8 Jun

Plant outdoors: 5 Mar to 11 May
Under cover: 5 Feb to 8 Jun
First harvest: About 163 days after planting. Planted on 5 March, ready around 15 August.
Warmth: Hardy: grows once days average 6°C.

Onion across the UK, town by town

GarlicOutdoors 23 Sep to 14 Dec; Under cover 26 Aug to 11 Jan

Plant outdoors: 23 Sep to 14 Dec
Under cover: 26 Aug to 11 Jan
First harvest: About 250 days after planting. Planted on 23 September, ready around 31 May.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Garlic across the UK, town by town

LeekOutdoors 13 Mar to 3 Aug; Under cover 13 Feb to 31 Aug

Sow outdoors: 13 Mar to 3 Aug
Under cover: 13 Feb to 31 Aug
First harvest: About 171 days after sowing. Sown on 13 March, ready around 31 August.
Warmth: Hardy: grows once days average 6°C.

Leek across the UK, town by town

Spring onionOutdoors 15 Feb to 8 Sep; Under cover 18 Jan to 6 Oct

Sow outdoors: 15 Feb to 8 Sep
Under cover: 18 Jan to 6 Oct
First harvest: About 91 days after sowing. Sown on 15 February, ready around 17 May.
Warmth: Hardy: grows once days average 5°C.

Spring onion across the UK, town by town

ShallotOutdoors 26 Jan to 11 May; Under cover 29 Dec to 8 Jun

Plant outdoors: 26 Jan to 11 May
Under cover: 29 Dec to 8 Jun
First harvest: About 176 days after planting. Planted on 26 January, ready around 21 July.
Warmth: Hardy: grows once days average 5°C.

Shallot across the UK, town by town

Brassicas

CabbageOutdoors 13 Mar to 3 Aug; Under cover 13 Feb to 31 Aug

Sow outdoors: 13 Mar to 3 Aug
Under cover: 13 Feb to 31 Aug
First harvest: About 127 days after sowing. Sown on 13 March, ready around 18 July.
Warmth: Hardy: grows once days average 6°C.

Cabbage across the UK, town by town

BroccoliOutdoors 5 Apr to 3 Aug; Under cover 8 Mar to 31 Aug

Sow outdoors: 5 Apr to 3 Aug
Under cover: 8 Mar to 31 Aug
First harvest: About 100 days after sowing. Sown on 5 April, ready around 14 July.
Warmth: Hardy: grows once days average 7°C.

Broccoli across the UK, town by town

CauliflowerOutdoors 13 Mar to 17 Jul; Under cover 13 Feb to 14 Aug

Sow outdoors: 13 Mar to 17 Jul
Under cover: 13 Feb to 14 Aug
First harvest: About 138 days after sowing. Sown on 13 March, ready around 29 July.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Cauliflower across the UK, town by town

Brussels sproutOutdoors 13 Mar to 29 May; Under cover 13 Feb to 26 Jun

Sow outdoors: 13 Mar to 29 May
Under cover: 13 Feb to 26 Jun
First harvest: About 205 days after sowing. Sown on 13 March, ready around 4 October.
Warmth: Hardy: grows once days average 6°C.

Brussels sprout across the UK, town by town

KaleOutdoors 5 Apr to 3 Aug; Under cover 8 Mar to 31 Aug

Sow outdoors: 5 Apr to 3 Aug
Under cover: 8 Mar to 31 Aug
First harvest: About 89 days after sowing. Sown on 5 April, ready around 3 July.
Warmth: Hardy: grows once days average 7°C.

Kale across the UK, town by town

Pak choiOutdoors 22 Apr to 2 Sep; Under cover 25 Mar to 30 Sep

Sow outdoors: 22 Apr to 2 Sep
Under cover: 25 Mar to 30 Sep
First harvest: About 49 days after sowing. Sown on 22 April, ready around 10 June.
Warmth: Hardy: grows once days average 8°C; bolts in hot weather.

Pak choi across the UK, town by town

Herbs

BasilOutdoors 22 Apr to 31 Jul; Under cover 25 Mar to 28 Aug

Sow outdoors: 22 Apr to 31 Jul
Under cover: 25 Mar to 28 Aug
First harvest: About 70 days after sowing. Sown on 22 April, ready around 1 July.
Warmth: Tender: needs days averaging 8°C or more, and no frost.

Basil across the UK, town by town

ParsleyOutdoors 13 Mar to 19 Aug; Under cover 13 Feb to 16 Sep

Sow outdoors: 13 Mar to 19 Aug
Under cover: 13 Feb to 16 Sep
First harvest: About 87 days after sowing. Sown on 13 March, ready around 8 June.
Warmth: Hardy: grows once days average 6°C.

Parsley across the UK, town by town

CorianderOutdoors 5 Apr to 3 Sep; Under cover 8 Mar to 1 Oct

Sow outdoors: 5 Apr to 3 Sep
Under cover: 8 Mar to 1 Oct
First harvest: About 55 days after sowing. Sown on 5 April, ready around 30 May.
Warmth: Hardy: grows once days average 7°C; bolts in hot weather.

Coriander across the UK, town by town

ChivesOutdoors 13 Mar to 20 Jun; Under cover 13 Feb to 18 Jul

Sow outdoors: 13 Mar to 20 Jun
Under cover: 13 Feb to 18 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 5 Apr to 18 Oct; Under cover 8 Mar to 15 Nov

Sow outdoors: 5 Apr to 18 Oct
Under cover: 8 Mar to 15 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 13 Mar to 29 May; Under cover 13 Feb to 26 Jun

Plant outdoors: 13 Mar to 29 May
Under cover: 13 Feb to 26 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 3 Nov to 25 Jan; Under cover 6 Oct to 22 Feb

Plant outdoors: 3 Nov to 25 Jan
Under cover: 6 Oct to 22 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 12 Oct to 25 Jan; Under cover 14 Sep to 22 Feb

Plant outdoors: 12 Oct to 25 Jan
Under cover: 14 Sep to 22 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

Questions about growing in Carrickfergus

When is the last frost in Carrickfergus?

On average around 5 March, and the first autumn frost comes around 20 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 Carrickfergus?

Yes. Plant them outdoors 6 Jun to 21 Jun, or under cover 9 May to 24 May, and 6 Jun to 21 Jun, and 4 Jul to 19 Jul.

What can I sow in Carrickfergus 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 Carrickfergus. 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