England, UK

Planting calendar for Grantham

Last frost around 12 April, first frost around 16 November: about 218 frost-free days.

Last frost: 12 April
First frost: 16 November
Frost-free days: 218

Sow now: November

See the whole year

Outdoors

Broad bean
Garlic
Raspberry
Rhubarb

Under cover

Nothing this month.

The year at a glance

When each crop can be sown in Grantham. 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 Grantham, 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: 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
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 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
Aubergine	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
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 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 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: Not this month	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 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: 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
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: Not this month	February: Sow 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 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: 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: Plant under cover	October: Plant outdoors and under cover	November: Plant outdoors and under cover	December: Plant 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 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: 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
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 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 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 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 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 under cover	November: Not this month	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 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: Not this month	October: Plant under cover	November: Plant outdoors and under cover	December: Plant outdoors and under cover
Rhubarb	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

Fruit rows show when to plant, not sow.

Crop by crop

Fruiting

TomatoOutdoors 20 May to 14 Jun; Under cover 22 Apr to 12 Jul

Sow outdoors: 20 May to 14 Jun
Under cover: 22 Apr to 12 Jul
First harvest: About 103 days after sowing. Sown on 20 May, ready around 31 August.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Tomato across the UK, town by town

ChilliOutdoors 19 May to 14 Jun; Under cover 21 Apr to 12 Jul

Sow outdoors: 19 May to 14 Jun
Under cover: 21 Apr to 12 Jul
First harvest: About 121 days after sowing. Sown on 19 May, ready around 17 September.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Chilli across the UK, town by town

Sweet pepperOutdoors 24 May to 19 Jun; Under cover 26 Apr to 17 Jul

Sow outdoors: 24 May to 19 Jun
Under cover: 26 Apr to 17 Jul
First harvest: About 114 days after sowing. Sown on 24 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 24 May to 14 Jun; Under cover 26 Apr to 12 Jul

Sow outdoors: 24 May to 14 Jun
Under cover: 26 Apr to 12 Jul
First harvest: About 118 days after sowing. Sown on 24 May, ready around 19 September.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Aubergine across the UK, town by town

CourgetteOutdoors 19 May to 29 Jun; Under cover 21 Apr to 27 Jul

Sow outdoors: 19 May to 29 Jun
Under cover: 21 Apr to 27 Jul
First harvest: About 59 days after sowing. Sown on 19 May, ready around 17 July.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Courgette across the UK, town by town

CucumberOutdoors 19 May to 29 Jun; Under cover 21 Apr to 27 Jul

Sow outdoors: 19 May to 29 Jun
Under cover: 21 Apr to 27 Jul
First harvest: About 69 days after sowing. Sown on 19 May, ready around 27 July.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Cucumber across the UK, town by town

SquashOutdoors 19 May to 19 Jun; Under cover 21 Apr to 17 Jul

Sow outdoors: 19 May to 19 Jun
Under cover: 21 Apr to 17 Jul
First harvest: About 104 days after sowing. Sown on 19 May, ready around 31 August.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Squash across the UK, town by town

SweetcornOutdoors 14 May to 19 Jun; Under cover 16 Apr to 17 Jul

Sow outdoors: 14 May to 19 Jun
Under cover: 16 Apr to 17 Jul
First harvest: About 96 days after sowing. Sown on 14 May, ready around 18 August.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Sweetcorn across the UK, town by town

Roots

CarrotOutdoors 29 Mar to 7 Jul; Under cover 1 Mar to 4 Aug

Sow outdoors: 29 Mar to 7 Jul
Under cover: 1 Mar to 4 Aug
First harvest: About 102 days after sowing. Sown on 29 March, ready around 9 July.
Warmth: Hardy: grows once days average 7°C.

Carrot across the UK, town by town

BeetrootOutdoors 29 Mar to 12 Jul; Under cover 1 Mar to 9 Aug

Sow outdoors: 29 Mar to 12 Jul
Under cover: 1 Mar to 9 Aug
First harvest: About 72 days after sowing. Sown on 29 March, ready around 9 June.
Warmth: Hardy: grows once days average 7°C.

Beetroot across the UK, town by town

ParsnipOutdoors 11 Mar to 29 May; Under cover 11 Feb to 26 Jun

Sow outdoors: 11 Mar to 29 May
Under cover: 11 Feb to 26 Jun
First harvest: About 132 days after sowing. Sown on 11 March, ready around 21 July.
Warmth: Hardy: grows once days average 6°C.

Parsnip across the UK, town by town

RadishOutdoors 11 Mar to 18 Sep; Under cover 11 Feb to 16 Oct

Sow outdoors: 11 Mar to 18 Sep
Under cover: 11 Feb to 16 Oct
First harvest: About 30 days after sowing. Sown on 11 March, ready around 10 April.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Radish across the UK, town by town

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

Plant outdoors: 11 Mar to 8 May
Under cover: 11 Feb to 5 Jun
First harvest: About 103 days after planting. Planted on 11 March, ready around 22 June.
Warmth: Hardy: grows once days average 6°C.

Potato across the UK, town by town

TurnipOutdoors 11 Mar to 19 Aug; Under cover 11 Feb to 16 Sep

Sow outdoors: 11 Mar to 19 Aug
Under cover: 11 Feb to 16 Sep
First harvest: About 63 days after sowing. Sown on 11 March, ready around 13 May.
Warmth: Hardy: grows once days average 6°C.

Turnip across the UK, town by town

Leaves

LettuceOutdoors 16 Mar to 14 Aug; Under cover 16 Feb to 11 Sep

Sow outdoors: 16 Mar to 14 Aug
Under cover: 16 Feb to 11 Sep
First harvest: About 73 days after sowing. Sown on 16 March, ready around 28 May.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Lettuce across the UK, town by town

SpinachOutdoors 11 Mar to 18 Sep; Under cover 11 Feb to 16 Oct

Sow outdoors: 11 Mar to 18 Sep
Under cover: 11 Feb to 16 Oct
First harvest: About 47 days after sowing. Sown on 11 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 29 Mar to 19 Aug; Under cover 1 Mar to 16 Sep

Sow outdoors: 29 Mar to 19 Aug
Under cover: 1 Mar to 16 Sep
First harvest: About 62 days after sowing. Sown on 29 March, ready around 30 May.
Warmth: Hardy: grows once days average 7°C.

Swiss chard across the UK, town by town

RocketOutdoors 11 Mar to 18 Sep; Under cover 11 Feb to 16 Oct

Sow outdoors: 11 Mar to 18 Sep
Under cover: 11 Feb to 16 Oct
First harvest: About 42 days after sowing. Sown on 11 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 23 Feb to 28 Apr; Under cover 26 Jan to 26 May

Sow outdoors: 23 Feb to 28 Apr
Under cover: 26 Jan to 26 May
First harvest: About 135 days after sowing. Sown on 23 February, ready around 8 July.
Warmth: Hardy: grows once days average 5°C.

Celery across the UK, town by town

Beans and peas

Runner beanOutdoors 14 May to 29 Jun; Under cover 16 Apr to 27 Jul

Sow outdoors: 14 May to 29 Jun
Under cover: 16 Apr to 27 Jul
First harvest: About 88 days after sowing. Sown on 14 May, ready around 10 August.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Runner bean across the UK, town by town

French beanOutdoors 14 May to 14 Jul; Under cover 16 Apr to 11 Aug

Sow outdoors: 14 May to 14 Jul
Under cover: 16 Apr to 11 Aug
First harvest: About 69 days after sowing. Sown on 14 May, ready around 22 July.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

French bean across the UK, town by town

Broad beanOutdoors 4 Oct to 21 Nov; Under cover 6 Sep to 19 Dec

Sow outdoors: 4 Oct to 21 Nov
Under cover: 6 Sep to 19 Dec
First harvest: About 220 days after sowing. Sown on 4 October, ready around 12 May.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Broad bean across the UK, town by town

PeaOutdoors 11 Mar to 13 Jun; Under cover 11 Feb to 11 Jul

Sow outdoors: 11 Mar to 13 Jun
Under cover: 11 Feb to 11 Jul
First harvest: About 83 days after sowing. Sown on 11 March, ready around 2 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 28 Apr; Under cover 5 Feb to 26 May

Plant outdoors: 5 Mar to 28 Apr
Under cover: 5 Feb to 26 May
First harvest: About 143 days after planting. Planted on 5 March, ready around 26 July.
Warmth: Hardy: grows once days average 6°C.

Onion across the UK, town by town

GarlicOutdoors 4 Oct to 1 Dec; Under cover 6 Sep to 29 Dec

Plant outdoors: 4 Oct to 1 Dec
Under cover: 6 Sep to 29 Dec
First harvest: About 250 days after planting. Planted on 4 October, ready around 11 June.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Garlic across the UK, town by town

LeekOutdoors 11 Mar to 26 Jun; Under cover 11 Feb to 24 Jul

Sow outdoors: 11 Mar to 26 Jun
Under cover: 11 Feb to 24 Jul
First harvest: About 151 days after sowing. Sown on 11 March, ready around 9 August.
Warmth: Hardy: grows once days average 6°C.

Leek across the UK, town by town

Spring onionOutdoors 23 Feb to 3 Sep; Under cover 26 Jan to 1 Oct

Sow outdoors: 23 Feb to 3 Sep
Under cover: 26 Jan to 1 Oct
First harvest: About 74 days after sowing. Sown on 23 February, ready around 8 May.
Warmth: Hardy: grows once days average 5°C.

Spring onion across the UK, town by town

ShallotOutdoors 8 Feb to 28 Apr; Under cover 11 Jan to 26 May

Plant outdoors: 8 Feb to 28 Apr
Under cover: 11 Jan to 26 May
First harvest: About 137 days after planting. Planted on 8 February, ready around 25 June.
Warmth: Hardy: grows once days average 5°C.

Shallot across the UK, town by town

Brassicas

CabbageOutdoors 11 Mar to 11 Jul; Under cover 11 Feb to 8 Aug

Sow outdoors: 11 Mar to 11 Jul
Under cover: 11 Feb to 8 Aug
First harvest: About 113 days after sowing. Sown on 11 March, ready around 2 July.
Warmth: Hardy: grows once days average 6°C.

Cabbage across the UK, town by town

BroccoliOutdoors 29 Mar to 27 Jun; Under cover 1 Mar to 25 Jul

Sow outdoors: 29 Mar to 27 Jun
Under cover: 1 Mar to 25 Jul
First harvest: About 92 days after sowing. Sown on 29 March, ready around 29 June.
Warmth: Hardy: grows once days average 7°C.

Broccoli across the UK, town by town

CauliflowerOutdoors 11 Mar to 13 Jun; Under cover 11 Feb to 11 Jul

Sow outdoors: 11 Mar to 13 Jun
Under cover: 11 Feb to 11 Jul
First harvest: About 123 days after sowing. Sown on 11 March, ready around 12 July.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Cauliflower across the UK, town by town

Brussels sproutOutdoors 11 Mar to 14 May; Under cover 11 Feb to 11 Jun

Sow outdoors: 11 Mar to 14 May
Under cover: 11 Feb to 11 Jun
First harvest: About 179 days after sowing. Sown on 11 March, ready around 6 September.
Warmth: Hardy: grows once days average 6°C.

Brussels sprout across the UK, town by town

KaleOutdoors 29 Mar to 12 Jul; Under cover 1 Mar to 9 Aug

Sow outdoors: 29 Mar to 12 Jul
Under cover: 1 Mar to 9 Aug
First harvest: About 82 days after sowing. Sown on 29 March, ready around 19 June.
Warmth: Hardy: grows once days average 7°C.

Kale across the UK, town by town

Pak choiOutdoors 13 Apr to 4 Sep; Under cover 16 Mar to 2 Oct

Sow outdoors: 13 Apr to 4 Sep
Under cover: 16 Mar to 2 Oct
First harvest: About 46 days after sowing. Sown on 13 April, ready around 29 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 13 Jul; Under cover 16 Mar to 10 Aug

Sow outdoors: 13 Apr to 13 Jul
Under cover: 16 Mar to 10 Aug
First harvest: About 62 days after sowing. Sown on 13 April, ready around 14 June.
Warmth: Tender: needs days averaging 8°C or more, and no frost.

Basil across the UK, town by town

ParsleyOutdoors 11 Mar to 19 Aug; Under cover 11 Feb to 16 Sep

Sow outdoors: 11 Mar to 19 Aug
Under cover: 11 Feb to 16 Sep
First harvest: About 78 days after sowing. Sown on 11 March, ready around 28 May.
Warmth: Hardy: grows once days average 6°C.

Parsley across the UK, town by town

CorianderOutdoors 29 Mar to 3 Sep; Under cover 1 Mar to 1 Oct

Sow outdoors: 29 Mar to 3 Sep
Under cover: 1 Mar to 1 Oct
First harvest: About 52 days after sowing. Sown on 29 March, ready around 20 May.
Warmth: Hardy: grows once days average 7°C; bolts in hot weather.

Coriander across the UK, town by town

ChivesOutdoors 11 Mar to 29 May; Under cover 11 Feb to 26 Jun

Sow outdoors: 11 Mar to 29 May
Under cover: 11 Feb to 26 Jun
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 29 Mar to 2 Oct; Under cover 1 Mar to 30 Oct

Sow outdoors: 29 Mar to 2 Oct
Under cover: 1 Mar to 30 Oct
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 11 Mar to 14 May; Under cover 11 Feb to 11 Jun

Plant outdoors: 11 Mar to 14 May
Under cover: 11 Feb to 11 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 6 Jan; Under cover 6 Oct to 3 Feb

Plant outdoors: 3 Nov to 6 Jan
Under cover: 6 Oct to 3 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 17 Oct to 17 Dec; Under cover 19 Sep to 14 Jan

Plant outdoors: 17 Oct to 17 Dec
Under cover: 19 Sep to 14 Jan
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

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

Questions about growing in Grantham

When is the last frost in Grantham?

On average around 12 April, and the first autumn frost comes around 16 November. 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 Grantham?

Yes. Plant them outdoors 20 May to 14 Jun, or under cover 22 Apr to 12 Jul.

What can I sow in Grantham in November?

Outdoors: broad bean, garlic, raspberry, rhubarb.

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 Grantham. 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