Ontario, Canada

Planting calendar for Windsor

Last frost around April 13, first frost around November 11: about 212 frost-free days.

Last frost: April 13
First frost: November 11
Frost-free days: 212

Sow now: November

See the whole year

Outdoors

Garlic
Raspberry
Rhubarb

Under cover

Nothing this month.

The year at a glance

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

Sow outdoorsSow under cover (indoors, a greenhouse or a cold frame)

When to sow each crop in Windsor, 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: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Chile pepper	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: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Bell pepper	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: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Eggplant	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: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Zucchini	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: Sow outdoors and under cover	September: Sow under cover	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: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Winter 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: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Sweet corn	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: Sow outdoors and under cover	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
Beet	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: 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
Radish	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 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: Not this month	March: Plant under cover	April: Plant outdoors and under cover	May: Plant outdoors and under cover	June: Plant under cover	July: Plant under cover	August: Plant under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Turnip	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
Leaves
Lettuce	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 under cover	July: Sow 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: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Sow 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
Arugula	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 under cover	July: Sow 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: Not this month	March: Sow 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: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Green 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 outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Fava bean	January: Not this month	February: Not this month	March: Sow 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
Pea	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 under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Onion family
Onion	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 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: 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: 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
Scallion	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
Shallot	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	July: Plant under cover	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: 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: 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 outdoors and under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Cauliflower	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 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
Brussels sprout	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: 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 outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Bok choy	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 under cover	July: Sow 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 outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Parsley	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
Cilantro	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 under cover	July: Sow 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: 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: Sow outdoors and under cover	September: Sow under cover	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: 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	July: Plant under cover	August: Plant outdoors and under cover	September: Plant under cover	October: Not this month	November: Not this month	December: Not this month
Raspberry	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: Not this month	October: Plant under cover	November: Plant outdoors and under cover	December: Plant under cover
Rhubarb	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: Not this month	October: Plant outdoors and under cover	November: Plant outdoors and under cover	December: Plant under cover

Fruit rows show when to plant, not sow.

Crop by crop

Fruiting

TomatoOutdoors May 18 to Jun 12, and Jul 26 to Aug 4; Under cover Apr 20 to Jul 10, and Jul 26 to Aug 4, and Aug 23 to Sep 1

Sow outdoors: May 18 to Jun 12, and Jul 26 to Aug 4
Under cover: Apr 20 to Jul 10, and Jul 26 to Aug 4, and Aug 23 to Sep 1
First harvest: About 66 days after sowing. Sown on May 18, ready around July 23.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Tomato across Canada, town by town

Chile pepperOutdoors May 17 to Jun 12, and Jul 26 to Aug 2; Under cover Apr 19 to Jul 10, and Jul 26 to Aug 2, and Aug 23 to Aug 30

Sow outdoors: May 17 to Jun 12, and Jul 26 to Aug 2
Under cover: Apr 19 to Jul 10, and Jul 26 to Aug 2, and Aug 23 to Aug 30
First harvest: About 84 days after sowing. Sown on May 17, ready around August 9.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Chile pepper across Canada, town by town

Bell pepperOutdoors May 22 to Jun 17, and Jul 26 to Aug 4; Under cover Apr 24 to Jul 15, and Jul 26 to Aug 4, and Aug 23 to Sep 1

Sow outdoors: May 22 to Jun 17, and Jul 26 to Aug 4
Under cover: Apr 24 to Jul 15, and Jul 26 to Aug 4, and Aug 23 to Sep 1
First harvest: About 78 days after sowing. Sown on May 22, ready around August 8.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Bell pepper across Canada, town by town

EggplantOutdoors May 22 to Jun 12, and Jul 26 to Aug 2; Under cover Apr 24 to Jul 10, and Jul 26 to Aug 2, and Aug 23 to Aug 30

Sow outdoors: May 22 to Jun 12, and Jul 26 to Aug 2
Under cover: Apr 24 to Jul 10, and Jul 26 to Aug 2, and Aug 23 to Aug 30
First harvest: About 90 days after sowing. Sown on May 22, ready around August 20.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Eggplant across Canada, town by town

ZucchiniOutdoors May 17 to Jun 27, and Jul 26 to Aug 23; Under cover Apr 19 to Sep 20

Sow outdoors: May 17 to Jun 27, and Jul 26 to Aug 23
Under cover: Apr 19 to Sep 20
First harvest: About 42 days after sowing. Sown on May 17, ready around June 28.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Zucchini across Canada, town by town

CucumberOutdoors May 17 to Jun 27, and Jul 26 to Aug 18; Under cover Apr 19 to Sep 15

Sow outdoors: May 17 to Jun 27, and Jul 26 to Aug 18
Under cover: Apr 19 to Sep 15
First harvest: About 46 days after sowing. Sown on May 17, ready around July 2.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Cucumber across Canada, town by town

Winter squashOutdoors May 17 to Jun 17, and Jul 26 to Aug 5; Under cover Apr 19 to Jul 15, and Jul 26 to Aug 5, and Aug 23 to Sep 2

Sow outdoors: May 17 to Jun 17, and Jul 26 to Aug 5
Under cover: Apr 19 to Jul 15, and Jul 26 to Aug 5, and Aug 23 to Sep 2
First harvest: About 66 days after sowing. Sown on May 17, ready around July 22.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Winter squash across Canada, town by town

Sweet cornOutdoors May 12 to Jun 17, and Jul 26 to Aug 7; Under cover Apr 14 to Jul 15, and Jul 26 to Aug 7, and Aug 23 to Sep 4

Sow outdoors: May 12 to Jun 17, and Jul 26 to Aug 7
Under cover: Apr 14 to Jul 15, and Jul 26 to Aug 7, and Aug 23 to Sep 4
First harvest: About 60 days after sowing. Sown on May 12, ready around July 11.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Sweet corn across Canada, town by town

Roots

CarrotOutdoors Apr 13 to Aug 5; Under cover Mar 16 to Sep 2

Sow outdoors: Apr 13 to Aug 5
Under cover: Mar 16 to Sep 2
First harvest: About 70 days after sowing. Sown on April 13, ready around June 22.
Warmth: Hardy: grows once days average 7°C.

Carrot across Canada, town by town

BeetOutdoors Apr 13 to Aug 20; Under cover Mar 16 to Sep 17

Sow outdoors: Apr 13 to Aug 20
Under cover: Mar 16 to Sep 17
First harvest: About 49 days after sowing. Sown on April 13, ready around June 1.
Warmth: Hardy: grows once days average 7°C.

Beet across Canada, town by town

ParsnipOutdoors Apr 8 to Jun 24; Under cover Mar 11 to Jul 22

Sow outdoors: Apr 8 to Jun 24
Under cover: Mar 11 to Jul 22
First harvest: About 85 days after sowing. Sown on April 8, ready around July 2.
Warmth: Hardy: grows once days average 6°C.

Parsnip across Canada, town by town

RadishOutdoors Apr 8 to Jun 3, and Jul 23 to Sep 28; Under cover Mar 11 to Oct 26

Sow outdoors: Apr 8 to Jun 3, and Jul 23 to Sep 28
Under cover: Mar 11 to Oct 26
First harvest: About 19 days after sowing. Sown on April 8, ready around April 27.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Radish across Canada, town by town

PotatoOutdoors Apr 8 to Jun 3, and Jul 26 to Aug 6; Under cover Mar 11 to Jul 9, and Jul 26 to Aug 6, and Aug 23 to Sep 3

Plant outdoors: Apr 8 to Jun 3, and Jul 26 to Aug 6
Under cover: Mar 11 to Jul 9, and Jul 26 to Aug 6, and Aug 23 to Sep 3
First harvest: About 65 days after planting. Planted on April 8, ready around June 12.
Warmth: Hardy: grows once days average 6°C.

Potato across Canada, town by town

TurnipOutdoors Apr 8 to Jun 20, and Jul 6 to Sep 1; Under cover Mar 11 to Sep 29

Sow outdoors: Apr 8 to Jun 20, and Jul 6 to Sep 1
Under cover: Mar 11 to Sep 29
First harvest: About 39 days after sowing. Sown on April 8, ready around May 17.
Warmth: Hardy: grows once days average 6°C.

Turnip across Canada, town by town

Leaves

LettuceOutdoors Apr 9 to May 24, and Aug 1 to Aug 27; Under cover Mar 12 to Jun 21, and Jul 4 to Sep 24

Sow outdoors: Apr 9 to May 24, and Aug 1 to Aug 27
Under cover: Mar 12 to Jun 21, and Jul 4 to Sep 24
First harvest: About 46 days after sowing. Sown on April 9, ready around May 25.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Lettuce across Canada, town by town

SpinachOutdoors Apr 8 to May 24, and Aug 1 to Sep 22; Under cover Mar 11 to Jun 21, and Jul 4 to Oct 20

Sow outdoors: Apr 8 to May 24, and Aug 1 to Sep 22
Under cover: Mar 11 to Jun 21, and Jul 4 to Oct 20
First harvest: About 29 days after sowing. Sown on April 8, ready around May 7.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Spinach across Canada, town by town

Swiss chardOutdoors Apr 13 to Sep 1; Under cover Mar 16 to Sep 29

Sow outdoors: Apr 13 to Sep 1
Under cover: Mar 16 to Sep 29
First harvest: About 42 days after sowing. Sown on April 13, ready around May 25.
Warmth: Hardy: grows once days average 7°C.

Swiss chard across Canada, town by town

ArugulaOutdoors Apr 8 to May 24, and Aug 1 to Sep 23; Under cover Mar 11 to Jun 21, and Jul 4 to Oct 21

Sow outdoors: Apr 8 to May 24, and Aug 1 to Sep 23
Under cover: Mar 11 to Jun 21, and Jul 4 to Oct 21
First harvest: About 26 days after sowing. Sown on April 8, ready around May 4.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Arugula across Canada, town by town

CeleryOutdoors Apr 4 to Jun 3; Under cover Mar 7 to Jul 1

Sow outdoors: Apr 4 to Jun 3
Under cover: Mar 7 to Jul 1
First harvest: About 78 days after sowing. Sown on April 4, ready around June 21.
Warmth: Hardy: grows once days average 5°C.

Celery across Canada, town by town

Beans and peas

Runner beanOutdoors May 12 to Jun 27, and Jul 26 to Aug 11; Under cover Apr 14 to Aug 11, and Aug 23 to Sep 8

Sow outdoors: May 12 to Jun 27, and Jul 26 to Aug 11
Under cover: Apr 14 to Aug 11, and Aug 23 to Sep 8
First harvest: About 57 days after sowing. Sown on May 12, ready around July 8.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Runner bean across Canada, town by town

Green beanOutdoors May 12 to Aug 21; Under cover Apr 14 to Sep 18

Sow outdoors: May 12 to Aug 21
Under cover: Apr 14 to Sep 18
First harvest: About 49 days after sowing. Sown on May 12, ready around June 30.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Green bean across Canada, town by town

Fava beanOutdoors Apr 2 to Apr 17; Under cover Mar 5 to Mar 20, and Apr 2 to Apr 17, and Apr 30 to May 15

Sow outdoors: Apr 2 to Apr 17
Under cover: Mar 5 to Mar 20, and Apr 2 to Apr 17, and Apr 30 to May 15
First harvest: About 220 days after sowing. Sown on April 2, ready around November 8.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Fava bean across Canada, town by town

PeaOutdoors Apr 8 to Jun 3, and Jul 26 to Aug 12; Under cover Mar 11 to Jul 15, and Jul 26 to Aug 12, and Aug 23 to Sep 9

Sow outdoors: Apr 8 to Jun 3, and Jul 26 to Aug 12
Under cover: Mar 11 to Jul 15, and Jul 26 to Aug 12, and Aug 23 to Sep 9
First harvest: About 52 days after sowing. Sown on April 8, ready around May 30.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Pea across Canada, town by town

Onion family

OnionOutdoors Apr 6 to May 27; Under cover Mar 9 to Jun 24

Plant outdoors: Apr 6 to May 27
Under cover: Mar 9 to Jun 24
First harvest: About 89 days after planting. Planted on April 6, ready around July 4.
Warmth: Hardy: grows once days average 6°C.

Onion across Canada, town by town

GarlicOutdoors Oct 17 to Nov 13; Under cover Sep 19 to Dec 11

Plant outdoors: Oct 17 to Nov 13
Under cover: Sep 19 to Dec 11
First harvest: About 250 days after planting. Planted on October 17, ready around June 24.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Garlic across Canada, town by town

LeekOutdoors Apr 8 to Jul 24; Under cover Mar 11 to Aug 21

Sow outdoors: Apr 8 to Jul 24
Under cover: Mar 11 to Aug 21
First harvest: About 98 days after sowing. Sown on April 8, ready around July 15.
Warmth: Hardy: grows once days average 6°C.

Leek across Canada, town by town

ScallionOutdoors Apr 4 to Sep 10; Under cover Mar 7 to Oct 8

Sow outdoors: Apr 4 to Sep 10
Under cover: Mar 7 to Oct 8
First harvest: About 42 days after sowing. Sown on April 4, ready around May 16.
Warmth: Hardy: grows once days average 5°C.

Scallion across Canada, town by town

ShallotOutdoors Apr 2 to Jun 15; Under cover Mar 5 to Jul 13

Plant outdoors: Apr 2 to Jun 15
Under cover: Mar 5 to Jul 13
First harvest: About 78 days after planting. Planted on April 2, ready around June 19.
Warmth: Hardy: grows once days average 5°C.

Shallot across Canada, town by town

Brassicas

CabbageOutdoors Apr 8 to Aug 8; Under cover Mar 11 to Sep 5

Sow outdoors: Apr 8 to Aug 8
Under cover: Mar 11 to Sep 5
First harvest: About 72 days after sowing. Sown on April 8, ready around June 19.
Warmth: Hardy: grows once days average 6°C.

Cabbage across Canada, town by town

BroccoliOutdoors Apr 13 to Aug 7; Under cover Mar 16 to Sep 4

Sow outdoors: Apr 13 to Aug 7
Under cover: Mar 16 to Sep 4
First harvest: About 63 days after sowing. Sown on April 13, ready around June 15.
Warmth: Hardy: grows once days average 7°C.

Broccoli across Canada, town by town

CauliflowerOutdoors Apr 8 to Jun 3; Under cover Mar 11 to Jul 1

Sow outdoors: Apr 8 to Jun 3
Under cover: Mar 11 to Jul 1
First harvest: About 79 days after sowing. Sown on April 8, ready around June 26.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Cauliflower across Canada, town by town

Brussels sproutOutdoors Apr 8 to Jun 8; Under cover Mar 11 to Jul 6

Sow outdoors: Apr 8 to Jun 8
Under cover: Mar 11 to Jul 6
First harvest: About 115 days after sowing. Sown on April 8, ready around August 1.
Warmth: Hardy: grows once days average 6°C.

Brussels sprout across Canada, town by town

KaleOutdoors Apr 13 to Aug 15; Under cover Mar 16 to Sep 12

Sow outdoors: Apr 13 to Aug 15
Under cover: Mar 16 to Sep 12
First harvest: About 56 days after sowing. Sown on April 13, ready around June 8.
Warmth: Hardy: grows once days average 7°C.

Kale across Canada, town by town

Bok choyOutdoors Apr 18 to May 24, and Aug 1 to Sep 14; Under cover Mar 21 to Jun 21, and Jul 4 to Oct 12

Sow outdoors: Apr 18 to May 24, and Aug 1 to Sep 14
Under cover: Mar 21 to Jun 21, and Jul 4 to Oct 12
First harvest: About 35 days after sowing. Sown on April 18, ready around May 23.
Warmth: Hardy: grows once days average 8°C; bolts in hot weather.

Bok choy across Canada, town by town

Herbs

BasilOutdoors Apr 18 to Aug 24; Under cover Mar 21 to Sep 21

Sow outdoors: Apr 18 to Aug 24
Under cover: Mar 21 to Sep 21
First harvest: About 36 days after sowing. Sown on April 18, ready around May 24.
Warmth: Tender: needs days averaging 8°C or more, and no frost.

Basil across Canada, town by town

ParsleyOutdoors Apr 8 to Aug 30; Under cover Mar 11 to Sep 27

Sow outdoors: Apr 8 to Aug 30
Under cover: Mar 11 to Sep 27
First harvest: About 48 days after sowing. Sown on April 8, ready around May 26.
Warmth: Hardy: grows once days average 6°C.

Parsley across Canada, town by town

CilantroOutdoors Apr 13 to May 24, and Aug 1 to Sep 12; Under cover Mar 16 to Jun 21, and Jul 4 to Oct 10

Sow outdoors: Apr 13 to May 24, and Aug 1 to Sep 12
Under cover: Mar 16 to Jun 21, and Jul 4 to Oct 10
First harvest: About 36 days after sowing. Sown on April 13, ready around May 19.
Warmth: Hardy: grows once days average 7°C; bolts in hot weather.

Cilantro across Canada, town by town

ChivesOutdoors Apr 8 to Jun 24, and Jul 26 to Aug 14; Under cover Mar 11 to Aug 14, and Aug 23 to Sep 11

Sow outdoors: Apr 8 to Jun 24, and Jul 26 to Aug 14
Under cover: Mar 11 to Aug 14, and Aug 23 to Sep 11
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 6°C.

Chives across Canada, town by town

MintOutdoors Apr 13 to Oct 2; Under cover Mar 16 to Oct 30

Sow outdoors: Apr 13 to Oct 2
Under cover: Mar 16 to Oct 30
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 7°C.

Mint across Canada, town by town

Fruit

StrawberryOutdoors Apr 8 to Jun 8, and Jul 26 to Aug 11; Under cover Mar 11 to Jul 14, and Jul 26 to Aug 11, and Aug 23 to Sep 8

Plant outdoors: Apr 8 to Jun 8, and Jul 26 to Aug 11
Under cover: Mar 11 to Jul 14, and Jul 26 to Aug 11, and Aug 23 to Sep 8
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 6°C.

Strawberry across Canada, town by town

RaspberryOutdoors Nov 2 to Nov 21; Under cover Oct 5 to Oct 24, and Nov 2 to Nov 21, and Nov 30 to Dec 19

Plant outdoors: Nov 2 to Nov 21
Under cover: Oct 5 to Oct 24, and Nov 2 to Nov 21, and Nov 30 to Dec 19
First harvest: Crops every year once it’s established.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Raspberry across Canada, town by town

RhubarbOutdoors Oct 24 to Nov 18; Under cover Sep 26 to Dec 16

Plant outdoors: Oct 24 to Nov 18
Under cover: Sep 26 to Dec 16
First harvest: Crops every year once it’s established.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Rhubarb across Canada, town by town

Nearby

Questions about growing in Windsor

When is the last frost in Windsor?

On average around April 13, and the first autumn frost comes around November 11. 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 Windsor?

Yes. Plant them outdoors May 18 to Jun 12, and Jul 26 to Aug 4, or under cover Apr 20 to Jul 10, and Jul 26 to Aug 4, and Aug 23 to Sep 1.

What can I sow in Windsor in November?

Outdoors: 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 backyard or community garden plot in Windsor. 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