Marlborough, New Zealand

Planting calendar for Blenheim

Last frost around 6 August, first frost around 2 July: about 330 frost-free days.

Last frost: 6 August
First frost: 2 July
Frost-free days: 330

Southern hemisphere: spring sowing is September to November, and the main harvest runs December to April.

Sow now: November

See the whole year

Under cover

Pea
Leek
Cauliflower

The year at a glance

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

Sow outdoorsSow under cover (a greenhouse or polytunnel)Months run July to June, so summer reads in one piece.

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

Fruit rows show when to plant, not sow.

Crop by crop

Fruiting

TomatoOutdoors 10 Nov to 22 Dec; Under cover 13 Oct to 19 Jan

Sow outdoors: 10 Nov to 22 Dec
Under cover: 13 Oct to 19 Jan
First harvest: About 99 days after sowing. Sown on 10 November, ready around 17 February.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Tomato across New Zealand, town by town

ChilliOutdoors 9 Nov to 22 Dec; Under cover 12 Oct to 19 Jan

Sow outdoors: 9 Nov to 22 Dec
Under cover: 12 Oct to 19 Jan
First harvest: About 104 days after sowing. Sown on 9 November, ready around 21 February.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Chilli across New Zealand, town by town

Sweet pepperOutdoors 17 Nov to 31 Dec; Under cover 20 Oct to 28 Jan

Sow outdoors: 17 Nov to 31 Dec
Under cover: 20 Oct to 28 Jan
First harvest: About 98 days after sowing. Sown on 17 November, ready around 23 February.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Sweet pepper across New Zealand, town by town

AubergineOutdoors 17 Nov to 22 Dec; Under cover 20 Oct to 19 Jan

Sow outdoors: 17 Nov to 22 Dec
Under cover: 20 Oct to 19 Jan
First harvest: About 98 days after sowing. Sown on 17 November, ready around 23 February.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Aubergine across New Zealand, town by town

CourgetteOutdoors 9 Nov to 8 Feb; Under cover 12 Oct to 8 Mar

Sow outdoors: 9 Nov to 8 Feb
Under cover: 12 Oct to 8 Mar
First harvest: About 63 days after sowing. Sown on 9 November, ready around 11 January.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Courgette across New Zealand, town by town

CucumberOutdoors 9 Nov to 1 Feb; Under cover 12 Oct to 1 Mar

Sow outdoors: 9 Nov to 1 Feb
Under cover: 12 Oct to 1 Mar
First harvest: About 72 days after sowing. Sown on 9 November, ready around 20 January.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Cucumber across New Zealand, town by town

SquashOutdoors 9 Nov to 31 Dec; Under cover 12 Oct to 28 Jan

Sow outdoors: 9 Nov to 31 Dec
Under cover: 12 Oct to 28 Jan
First harvest: About 99 days after sowing. Sown on 9 November, ready around 16 February.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Squash across New Zealand, town by town

SweetcornOutdoors 1 Nov to 31 Dec; Under cover 4 Oct to 28 Jan

Sow outdoors: 1 Nov to 31 Dec
Under cover: 4 Oct to 28 Jan
First harvest: About 98 days after sowing. Sown on 1 November, ready around 7 February.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Sweetcorn across New Zealand, town by town

Roots

CarrotOutdoors 26 Aug to 8 Feb; Under cover 29 Jul to 8 Mar

Sow outdoors: 26 Aug to 8 Feb
Under cover: 29 Jul to 8 Mar
First harvest: About 116 days after sowing. Sown on 26 August, ready around 20 December.
Warmth: Hardy: grows once days average 7°C.

Carrot across New Zealand, town by town

BeetrootOutdoors 26 Aug to 21 Feb; Under cover 29 Jul to 21 Mar

Sow outdoors: 26 Aug to 21 Feb
Under cover: 29 Jul to 21 Mar
First harvest: About 83 days after sowing. Sown on 26 August, ready around 17 November.
Warmth: Hardy: grows once days average 7°C.

Beetroot across New Zealand, town by town

ParsnipOutdoors 15 Jul to 30 Sep; Under cover 17 Jun to 28 Oct

Sow outdoors: 15 Jul to 30 Sep
Under cover: 17 Jun to 28 Oct
First harvest: About 78 days after sowing. Sown on 15 July, ready around 1 October.
Warmth: Hardy: grows once days average 6°C.

Parsnip across New Zealand, town by town

RadishOutdoors 16 Jul to 11 Apr; Under cover 18 Jun to 9 May

Sow outdoors: 16 Jul to 11 Apr
Under cover: 18 Jun to 9 May
First harvest: About 38 days after sowing. Sown on 16 July, ready around 23 August.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Radish across New Zealand, town by town

PotatoOutdoors 15 Jul to 9 Sep, and 2 Feb to 9 Feb; Under cover 5 Jan to 12 Jan, and 2 Feb to 9 Feb, and 2 Mar to 9 Mar, and 17 Jun to 7 Oct

Plant outdoors: 15 Jul to 9 Sep, and 2 Feb to 9 Feb
Under cover: 5 Jan to 12 Jan, and 2 Feb to 9 Feb, and 2 Mar to 9 Mar, and 17 Jun to 7 Oct
First harvest: About 77 days after planting. Planted on 15 July, ready around 30 September.
Warmth: Hardy: grows once days average 6°C.

Potato across New Zealand, town by town

TurnipOutdoors 16 Jul to 11 Mar; Under cover 18 Jun to 8 Apr

Sow outdoors: 16 Jul to 11 Mar
Under cover: 18 Jun to 8 Apr
First harvest: About 84 days after sowing. Sown on 16 July, ready around 8 October.
Warmth: Hardy: grows once days average 6°C.

Turnip across New Zealand, town by town

Leaves

LettuceOutdoors 2 Aug to 8 Mar; Under cover 5 Jul to 5 Apr

Sow outdoors: 2 Aug to 8 Mar
Under cover: 5 Jul to 5 Apr
First harvest: About 89 days after sowing. Sown on 2 August, ready around 30 October.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Lettuce across New Zealand, town by town

SpinachOutdoors 16 Jul to 17 Apr; Under cover 18 Jun to 15 May

Sow outdoors: 16 Jul to 17 Apr
Under cover: 18 Jun to 15 May
First harvest: About 63 days after sowing. Sown on 16 July, ready around 17 September.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Spinach across New Zealand, town by town

Swiss chardOutdoors 26 Aug to 11 Mar; Under cover 29 Jul to 8 Apr

Sow outdoors: 26 Aug to 11 Mar
Under cover: 29 Jul to 8 Apr
First harvest: About 71 days after sowing. Sown on 26 August, ready around 5 November.
Warmth: Hardy: grows once days average 7°C.

Swiss chard across New Zealand, town by town

RocketOutdoors 16 Jul to 15 Apr; Under cover 18 Jun to 13 May

Sow outdoors: 16 Jul to 15 Apr
Under cover: 18 Jun to 13 May
First harvest: About 56 days after sowing. Sown on 16 July, ready around 10 September.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Rocket across New Zealand, town by town

CeleryOutdoors 15 Jul to 13 Sep; Under cover 17 Jun to 11 Oct

Sow outdoors: 15 Jul to 13 Sep
Under cover: 17 Jun to 11 Oct
First harvest: About 78 days after sowing. Sown on 15 July, ready around 1 October.
Warmth: Hardy: grows once days average 5°C.

Celery across New Zealand, town by town

Beans and peas

Runner beanOutdoors 1 Nov to 1 Feb; Under cover 4 Oct to 1 Mar

Sow outdoors: 1 Nov to 1 Feb
Under cover: 4 Oct to 1 Mar
First harvest: About 91 days after sowing. Sown on 1 November, ready around 31 January.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Runner bean across New Zealand, town by town

French beanOutdoors 1 Nov to 5 Feb; Under cover 4 Oct to 5 Mar

Sow outdoors: 1 Nov to 5 Feb
Under cover: 4 Oct to 5 Mar
First harvest: About 74 days after sowing. Sown on 1 November, ready around 14 January.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

French bean across New Zealand, town by town

Broad beanOutdoors 5 Apr to 14 Jun; Under cover 8 Mar to 12 Jul

Sow outdoors: 5 Apr to 14 Jun
Under cover: 8 Mar to 12 Jul
First harvest: About 220 days after sowing. Sown on 5 April, ready around 11 November.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Broad bean across New Zealand, town by town

PeaOutdoors 16 Jul to 15 Oct, and 2 Feb to 11 Feb; Under cover 5 Jan to 14 Jan, and 2 Feb to 11 Feb, and 2 Mar to 11 Mar, and 18 Jun to 12 Nov

Sow outdoors: 16 Jul to 15 Oct, and 2 Feb to 11 Feb
Under cover: 5 Jan to 14 Jan, and 2 Feb to 11 Feb, and 2 Mar to 11 Mar, and 18 Jun to 12 Nov
First harvest: About 67 days after sowing. Sown on 16 July, ready around 21 September.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Pea across New Zealand, town by town

Onion family

OnionOutdoors 7 Jul to 4 Sep; Under cover 9 Jun to 2 Oct

Plant outdoors: 7 Jul to 4 Sep
Under cover: 9 Jun to 2 Oct
First harvest: About 84 days after planting. Planted on 7 July, ready around 29 September.
Warmth: Hardy: grows once days average 6°C.

Onion across New Zealand, town by town

GarlicOutdoors 5 Apr to 15 Jul; Under cover 8 Mar to 12 Aug

Plant outdoors: 5 Apr to 15 Jul
Under cover: 8 Mar to 12 Aug
First harvest: About 250 days after planting. Planted on 5 April, ready around 11 December.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Garlic across New Zealand, town by town

LeekOutdoors 2 Feb to 8 Feb, and 1 Jun to 30 Oct; Under cover 5 Jan to 11 Jan, and 2 Feb to 8 Feb, and 2 Mar to 8 Mar, and 4 May to 27 Nov

Sow outdoors: 2 Feb to 8 Feb, and 1 Jun to 30 Oct
Under cover: 5 Jan to 11 Jan, and 2 Feb to 8 Feb, and 2 Mar to 8 Mar, and 4 May to 27 Nov
First harvest: About 90 days after sowing. Sown on 2 February, ready around 3 May.
Warmth: Hardy: grows once days average 6°C.

Leek across New Zealand, town by town

Spring onionOutdoors 16 Jul to 7 Apr; Under cover 18 Jun to 5 May

Sow outdoors: 16 Jul to 7 Apr
Under cover: 18 Jun to 5 May
First harvest: About 98 days after sowing. Sown on 16 July, ready around 22 October.
Warmth: Hardy: grows once days average 5°C.

Spring onion across New Zealand, town by town

ShallotOutdoors 15 Jul to 27 Sep; Under cover 17 Jun to 25 Oct

Plant outdoors: 15 Jul to 27 Sep
Under cover: 17 Jun to 25 Oct
First harvest: About 78 days after planting. Planted on 15 July, ready around 1 October.
Warmth: Hardy: grows once days average 5°C.

Shallot across New Zealand, town by town

Brassicas

CabbageOutdoors 15 Jul to 14 Nov, and 2 Feb to 11 Feb; Under cover 5 Jan to 14 Jan, and 2 Feb to 11 Feb, and 2 Mar to 11 Mar, and 17 Jun to 12 Dec

Sow outdoors: 15 Jul to 14 Nov, and 2 Feb to 11 Feb
Under cover: 5 Jan to 14 Jan, and 2 Feb to 11 Feb, and 2 Mar to 11 Mar, and 17 Jun to 12 Dec
First harvest: About 80 days after sowing. Sown on 15 July, ready around 3 October.
Warmth: Hardy: grows once days average 6°C.

Cabbage across New Zealand, town by town

BroccoliOutdoors 26 Aug to 6 Feb; Under cover 29 Jul to 6 Mar

Sow outdoors: 26 Aug to 6 Feb
Under cover: 29 Jul to 6 Mar
First harvest: About 106 days after sowing. Sown on 26 August, ready around 10 December.
Warmth: Hardy: grows once days average 7°C.

Broccoli across New Zealand, town by town

CauliflowerOutdoors 15 Jul to 15 Oct; Under cover 17 Jun to 12 Nov

Sow outdoors: 15 Jul to 15 Oct
Under cover: 17 Jun to 12 Nov
First harvest: About 72 days after sowing. Sown on 15 July, ready around 25 September.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Cauliflower across New Zealand, town by town

Brussels sproutOutdoors 13 May to 14 Sep; Under cover 15 Apr to 12 Oct

Sow outdoors: 13 May to 14 Sep
Under cover: 15 Apr to 12 Oct
First harvest: About 108 days after sowing. Sown on 13 May, ready around 29 August.
Warmth: Hardy: grows once days average 6°C.

Brussels sprout across New Zealand, town by town

KaleOutdoors 26 Aug to 17 Feb; Under cover 29 Jul to 17 Mar

Sow outdoors: 26 Aug to 17 Feb
Under cover: 29 Jul to 17 Mar
First harvest: About 94 days after sowing. Sown on 26 August, ready around 28 November.
Warmth: Hardy: grows once days average 7°C.

Kale across New Zealand, town by town

Pak choiOutdoors 17 Sep to 27 Mar; Under cover 20 Aug to 24 Apr

Sow outdoors: 17 Sep to 27 Mar
Under cover: 20 Aug to 24 Apr
First harvest: About 51 days after sowing. Sown on 17 September, ready around 7 November.
Warmth: Hardy: grows once days average 8°C; bolts in hot weather.

Pak choi across New Zealand, town by town

Herbs

BasilOutdoors 17 Sep to 11 Feb; Under cover 20 Aug to 11 Mar

Sow outdoors: 17 Sep to 11 Feb
Under cover: 20 Aug to 11 Mar
First harvest: About 76 days after sowing. Sown on 17 September, ready around 2 December.
Warmth: Tender: needs days averaging 8°C or more, and no frost.

Basil across New Zealand, town by town

ParsleyOutdoors 16 Jul to 17 Mar; Under cover 18 Jun to 14 Apr

Sow outdoors: 16 Jul to 17 Mar
Under cover: 18 Jun to 14 Apr
First harvest: About 105 days after sowing. Sown on 16 July, ready around 29 October.
Warmth: Hardy: grows once days average 6°C.

Parsley across New Zealand, town by town

CorianderOutdoors 26 Aug to 29 Mar; Under cover 29 Jul to 26 Apr

Sow outdoors: 26 Aug to 29 Mar
Under cover: 29 Jul to 26 Apr
First harvest: About 59 days after sowing. Sown on 26 August, ready around 24 October.
Warmth: Hardy: grows once days average 7°C; bolts in hot weather.

Coriander across New Zealand, town by town

ChivesOutdoors 15 Jul to 30 Sep, and 2 Feb to 15 Feb; Under cover 5 Jan to 18 Jan, and 2 Feb to 15 Feb, and 2 Mar to 15 Mar, and 17 Jun to 28 Oct

Sow outdoors: 15 Jul to 30 Sep, and 2 Feb to 15 Feb
Under cover: 5 Jan to 18 Jan, and 2 Feb to 15 Feb, and 2 Mar to 15 Mar, and 17 Jun to 28 Oct
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 6°C.

Chives across New Zealand, town by town

MintOutdoors 26 Aug to 8 Jun; Under cover 29 Jul to 6 Jul

Sow outdoors: 26 Aug to 8 Jun
Under cover: 29 Jul to 6 Jul
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 7°C.

Mint across New Zealand, town by town

Fruit

StrawberryOutdoors 15 Jul to 14 Sep, and 2 Feb to 15 Feb; Under cover 5 Jan to 18 Jan, and 2 Feb to 15 Feb, and 2 Mar to 15 Mar, and 17 Jun to 12 Oct

Plant outdoors: 15 Jul to 14 Sep, and 2 Feb to 15 Feb
Under cover: 5 Jan to 18 Jan, and 2 Feb to 15 Feb, and 2 Mar to 15 Mar, and 17 Jun to 12 Oct
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 6°C.

Strawberry across New Zealand, town by town

RaspberryOutdoors 16 May to 15 Jul; Under cover 18 Apr to 12 Aug

Plant outdoors: 16 May to 15 Jul
Under cover: 18 Apr to 12 Aug
First harvest: Crops every year once it’s established.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Raspberry across New Zealand, town by town

RhubarbOutdoors 24 Apr to 15 Jul; Under cover 27 Mar to 12 Aug

Plant outdoors: 24 Apr to 15 Jul
Under cover: 27 Mar to 12 Aug
First harvest: Crops every year once it’s established.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Rhubarb across New Zealand, town by town

Nearby

Questions about growing in Blenheim

When is the last frost in Blenheim?

On average around 6 August, and the first autumn frost comes around 2 July. 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 Blenheim?

Yes. Plant them outdoors 10 Nov to 22 Dec, or under cover 13 Oct to 19 Jan.

What can I sow in Blenheim in November?

Outdoors: tomato, chilli, sweet pepper, aubergine, courgette, cucumber, squash, sweetcorn, carrot, beetroot, radish, turnip, lettuce, spinach, Swiss chard, rocket, runner bean, French bean, spring onion, cabbage, broccoli, kale, pak choi, basil, parsley, coriander, mint. Under cover: pea, leek, cauliflower.

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 Blenheim. Free for 2 months.

App StoreComing soon

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