Alberta, Canada

Planting calendar for Lethbridge

Last frost around May 7, first frost around October 9: about 155 frost-free days.

Last frost: May 7
First frost: October 9
Frost-free days: 155

Sow now: November

See the whole year

Outdoors

Nothing this month.

Under cover

Garlic
Raspberry
Rhubarb

The year at a glance

When each crop can be sown in Lethbridge. 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 Lethbridge, 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
Chile 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
Bell 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 outdoors and 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: 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
Zucchini	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
Winter 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 outdoors and 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: 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
Roots
Carrot	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
Beet	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
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 outdoors and 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 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
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 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
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: Not this month	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 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
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 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
Swiss chard	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: Not this month	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 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
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 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
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: Sow under cover	September: Not this month	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: 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
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 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: 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
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 under cover	December: Not this month
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 under cover	October: Not this month	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: 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
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 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: 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
Kale	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
Bok choy	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
Herbs
Basil	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
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: Not this month	October: Not this month	November: Not this month	December: Not this month
Cilantro	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
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 outdoors and 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: 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 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: Not this month	September: Not this month	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: Plant under cover	October: Plant outdoors and under cover	November: Plant under cover	December: Not this month
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: Plant under cover	October: Plant outdoors and under cover	November: Plant under cover	December: Not this month

Fruit rows show when to plant, not sow.

Crop by crop

Fruiting

TomatoOutdoors Jun 11 to Jul 6; Under cover May 14 to Aug 3

Sow outdoors: Jun 11 to Jul 6
Under cover: May 14 to Aug 3
First harvest: About 66 days after sowing. Sown on June 11, ready around August 16.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Tomato across Canada, town by town

Chile pepperOutdoors Jun 10 to Jul 6; Under cover May 13 to Aug 3

Sow outdoors: Jun 10 to Jul 6
Under cover: May 13 to Aug 3
First harvest: About 84 days after sowing. Sown on June 10, ready around September 2.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Chile pepper across Canada, town by town

Bell pepperOutdoors Jun 15 to Jul 11; Under cover May 18 to Aug 8

Sow outdoors: Jun 15 to Jul 11
Under cover: May 18 to Aug 8
First harvest: About 78 days after sowing. Sown on June 15, ready around September 1.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Bell pepper across Canada, town by town

EggplantOutdoors Jun 15 to Jul 6; Under cover May 18 to Aug 3

Sow outdoors: Jun 15 to Jul 6
Under cover: May 18 to Aug 3
First harvest: About 90 days after sowing. Sown on June 15, ready around September 13.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Eggplant across Canada, town by town

ZucchiniOutdoors Jun 10 to Jul 30; Under cover May 13 to Aug 27

Sow outdoors: Jun 10 to Jul 30
Under cover: May 13 to Aug 27
First harvest: About 46 days after sowing. Sown on June 10, ready around July 26.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Zucchini across Canada, town by town

CucumberOutdoors Jun 10 to Jul 21; Under cover May 13 to Aug 18

Sow outdoors: Jun 10 to Jul 21
Under cover: May 13 to Aug 18
First harvest: About 51 days after sowing. Sown on June 10, ready around July 31.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Cucumber across Canada, town by town

Winter squashOutdoors Jun 10 to Jul 11; Under cover May 13 to Aug 8

Sow outdoors: Jun 10 to Jul 11
Under cover: May 13 to Aug 8
First harvest: About 66 days after sowing. Sown on June 10, ready around August 15.
Warmth: Tender: needs days averaging 12°C or more, and no frost.

Winter squash across Canada, town by town

Sweet cornOutdoors Jun 5 to Jul 11; Under cover May 8 to Aug 8

Sow outdoors: Jun 5 to Jul 11
Under cover: May 8 to Aug 8
First harvest: About 66 days after sowing. Sown on June 5, ready around August 10.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Sweet corn across Canada, town by town

Roots

CarrotOutdoors Apr 27 to Aug 5; Under cover Mar 30 to Sep 2

Sow outdoors: Apr 27 to Aug 5
Under cover: Mar 30 to Sep 2
First harvest: About 76 days after sowing. Sown on April 27, ready around July 12.
Warmth: Hardy: grows once days average 7°C.

Carrot across Canada, town by town

BeetOutdoors Apr 27 to Aug 10; Under cover Mar 30 to Sep 7

Sow outdoors: Apr 27 to Aug 10
Under cover: Mar 30 to Sep 7
First harvest: About 53 days after sowing. Sown on April 27, ready around June 19.
Warmth: Hardy: grows once days average 7°C.

Beet across Canada, town by town

ParsnipOutdoors Apr 21 to Jul 7; Under cover Mar 24 to Aug 4

Sow outdoors: Apr 21 to Jul 7
Under cover: Mar 24 to Aug 4
First harvest: About 94 days after sowing. Sown on April 21, ready around July 24.
Warmth: Hardy: grows once days average 6°C.

Parsnip across Canada, town by town

RadishOutdoors Apr 21 to Sep 6; Under cover Mar 24 to Oct 4

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

Radish across Canada, town by town

PotatoOutdoors Apr 21 to Jun 16; Under cover Mar 24 to Jul 14

Plant outdoors: Apr 21 to Jun 16
Under cover: Mar 24 to Jul 14
First harvest: About 71 days after planting. Planted on April 21, ready around July 1.
Warmth: Hardy: grows once days average 6°C.

Potato across Canada, town by town

TurnipOutdoors Apr 21 to Aug 9; Under cover Mar 24 to Sep 6

Sow outdoors: Apr 21 to Aug 9
Under cover: Mar 24 to Sep 6
First harvest: About 42 days after sowing. Sown on April 21, ready around June 2.
Warmth: Hardy: grows once days average 6°C.

Turnip across Canada, town by town

Leaves

LettuceOutdoors Apr 22 to Aug 4; Under cover Mar 25 to Sep 1

Sow outdoors: Apr 22 to Aug 4
Under cover: Mar 25 to Sep 1
First harvest: About 50 days after sowing. Sown on April 22, ready around June 11.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Lettuce across Canada, town by town

SpinachOutdoors Apr 21 to Aug 31; Under cover Mar 24 to Sep 28

Sow outdoors: Apr 21 to Aug 31
Under cover: Mar 24 to Sep 28
First harvest: About 32 days after sowing. Sown on April 21, ready around May 23.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Spinach across Canada, town by town

Swiss chardOutdoors Apr 27 to Aug 9; Under cover Mar 30 to Sep 6

Sow outdoors: Apr 27 to Aug 9
Under cover: Mar 30 to Sep 6
First harvest: About 46 days after sowing. Sown on April 27, ready around June 12.
Warmth: Hardy: grows once days average 7°C.

Swiss chard across Canada, town by town

ArugulaOutdoors Apr 21 to Sep 2; Under cover Mar 24 to Sep 30

Sow outdoors: Apr 21 to Sep 2
Under cover: Mar 24 to Sep 30
First harvest: About 28 days after sowing. Sown on April 21, ready around May 19.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Arugula across Canada, town by town

CeleryOutdoors Apr 17 to Jun 16; Under cover Mar 20 to Jul 14

Sow outdoors: Apr 17 to Jun 16
Under cover: Mar 20 to Jul 14
First harvest: About 88 days after sowing. Sown on April 17, ready around July 14.
Warmth: Hardy: grows once days average 5°C.

Celery across Canada, town by town

Beans and peas

Runner beanOutdoors Jun 5 to Jul 21; Under cover May 8 to Aug 18

Sow outdoors: Jun 5 to Jul 21
Under cover: May 8 to Aug 18
First harvest: About 63 days after sowing. Sown on June 5, ready around August 7.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Runner bean across Canada, town by town

Green beanOutdoors Jun 5 to Aug 5; Under cover May 8 to Sep 2

Sow outdoors: Jun 5 to Aug 5
Under cover: May 8 to Sep 2
First harvest: About 53 days after sowing. Sown on June 5, ready around July 28.
Warmth: Tender: needs days averaging 11°C or more, and no frost.

Green bean across Canada, town by town

Fava beanOutdoors Apr 14 to May 2; Under cover Mar 17 to Apr 4, and Apr 14 to May 2, and May 12 to May 30

Sow outdoors: Apr 14 to May 2
Under cover: Mar 17 to Apr 4, and Apr 14 to May 2, and May 12 to May 30
First harvest: About 220 days after sowing. Sown on April 14, ready around November 20.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Fava bean across Canada, town by town

PeaOutdoors Apr 21 to Jul 22; Under cover Mar 24 to Aug 19

Sow outdoors: Apr 21 to Jul 22
Under cover: Mar 24 to Aug 19
First harvest: About 56 days after sowing. Sown on April 21, ready around June 16.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Pea across Canada, town by town

Onion family

OnionOutdoors Apr 19 to Jun 9; Under cover Mar 22 to Jul 7

Plant outdoors: Apr 19 to Jun 9
Under cover: Mar 22 to Jul 7
First harvest: About 99 days after planting. Planted on April 19, ready around July 27.
Warmth: Hardy: grows once days average 6°C.

Onion across Canada, town by town

GarlicOutdoors Sep 25 to Oct 21; Under cover Aug 28 to Nov 18

Plant outdoors: Sep 25 to Oct 21
Under cover: Aug 28 to Nov 18
First harvest: About 250 days after planting. Planted on September 25, ready around June 2.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Garlic across Canada, town by town

LeekOutdoors Apr 21 to Jul 28; Under cover Mar 24 to Aug 25

Sow outdoors: Apr 21 to Jul 28
Under cover: Mar 24 to Aug 25
First harvest: About 109 days after sowing. Sown on April 21, ready around August 8.
Warmth: Hardy: grows once days average 6°C.

Leek across Canada, town by town

ScallionOutdoors Apr 17 to Aug 19; Under cover Mar 20 to Sep 16

Sow outdoors: Apr 17 to Aug 19
Under cover: Mar 20 to Sep 16
First harvest: About 44 days after sowing. Sown on April 17, ready around May 31.
Warmth: Hardy: grows once days average 5°C.

Scallion across Canada, town by town

ShallotOutdoors Apr 14 to Jun 27; Under cover Mar 17 to Jul 25

Plant outdoors: Apr 14 to Jun 27
Under cover: Mar 17 to Jul 25
First harvest: About 81 days after planting. Planted on April 14, ready around July 4.
Warmth: Hardy: grows once days average 5°C.

Shallot across Canada, town by town

Brassicas

CabbageOutdoors Apr 21 to Aug 7; Under cover Mar 24 to Sep 4

Sow outdoors: Apr 21 to Aug 7
Under cover: Mar 24 to Sep 4
First harvest: About 79 days after sowing. Sown on April 21, ready around July 9.
Warmth: Hardy: grows once days average 6°C.

Cabbage across Canada, town by town

BroccoliOutdoors Apr 27 to Jul 26; Under cover Mar 30 to Aug 23

Sow outdoors: Apr 27 to Jul 26
Under cover: Mar 30 to Aug 23
First harvest: About 69 days after sowing. Sown on April 27, ready around July 5.
Warmth: Hardy: grows once days average 7°C.

Broccoli across Canada, town by town

CauliflowerOutdoors Apr 21 to Jul 22; Under cover Mar 24 to Aug 19

Sow outdoors: Apr 21 to Jul 22
Under cover: Mar 24 to Aug 19
First harvest: About 86 days after sowing. Sown on April 21, ready around July 16.
Warmth: Hardy: grows once days average 6°C; bolts in hot weather.

Cauliflower across Canada, town by town

Brussels sproutOutdoors Apr 21 to Jun 21; Under cover Mar 24 to Jul 19

Sow outdoors: Apr 21 to Jun 21
Under cover: Mar 24 to Jul 19
First harvest: About 132 days after sowing. Sown on April 21, ready around August 31.
Warmth: Hardy: grows once days average 6°C.

Brussels sprout across Canada, town by town

KaleOutdoors Apr 27 to Aug 10; Under cover Mar 30 to Sep 7

Sow outdoors: Apr 27 to Aug 10
Under cover: Mar 30 to Sep 7
First harvest: About 61 days after sowing. Sown on April 27, ready around June 27.
Warmth: Hardy: grows once days average 7°C.

Kale across Canada, town by town

Bok choyOutdoors May 3 to Aug 23; Under cover Apr 5 to Sep 20

Sow outdoors: May 3 to Aug 23
Under cover: Apr 5 to Sep 20
First harvest: About 37 days after sowing. Sown on May 3, ready around June 9.
Warmth: Hardy: grows once days average 8°C; bolts in hot weather.

Bok choy across Canada, town by town

Herbs

BasilOutdoors May 7 to Aug 6; Under cover Apr 9 to Sep 3

Sow outdoors: May 7 to Aug 6
Under cover: Apr 9 to Sep 3
First harvest: About 42 days after sowing. Sown on May 7, ready around June 18.
Warmth: Tender: needs days averaging 8°C or more, and no frost.

Basil across Canada, town by town

ParsleyOutdoors Apr 21 to Aug 7; Under cover Mar 24 to Sep 4

Sow outdoors: Apr 21 to Aug 7
Under cover: Mar 24 to Sep 4
First harvest: About 53 days after sowing. Sown on April 21, ready around June 13.
Warmth: Hardy: grows once days average 6°C.

Parsley across Canada, town by town

CilantroOutdoors Apr 27 to Aug 21; Under cover Mar 30 to Sep 18

Sow outdoors: Apr 27 to Aug 21
Under cover: Mar 30 to Sep 18
First harvest: About 39 days after sowing. Sown on April 27, ready around June 5.
Warmth: Hardy: grows once days average 7°C; bolts in hot weather.

Cilantro across Canada, town by town

ChivesOutdoors Apr 21 to Jul 7; Under cover Mar 24 to Aug 4

Sow outdoors: Apr 21 to Jul 7
Under cover: Mar 24 to Aug 4
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 27 to Sep 10; Under cover Mar 30 to Oct 8

Sow outdoors: Apr 27 to Sep 10
Under cover: Mar 30 to Oct 8
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 21 to Jun 21; Under cover Mar 24 to Jul 19

Plant outdoors: Apr 21 to Jun 21
Under cover: Mar 24 to Jul 19
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 6°C.

Strawberry across Canada, town by town

RaspberryOutdoors Oct 11 to Oct 28; Under cover Sep 13 to Sep 30, and Oct 11 to Oct 28, and Nov 8 to Nov 25

Plant outdoors: Oct 11 to Oct 28
Under cover: Sep 13 to Sep 30, and Oct 11 to Oct 28, and Nov 8 to Nov 25
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 2 to Oct 25; Under cover Sep 4 to Nov 22

Plant outdoors: Oct 2 to Oct 25
Under cover: Sep 4 to Nov 22
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 Lethbridge

When is the last frost in Lethbridge?

On average around May 7, and the first autumn frost comes around October 9. 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 Lethbridge?

Yes. Plant them outdoors Jun 11 to Jul 6, or under cover May 14 to Aug 3.

What can I sow in Lethbridge in November?

Nothing outdoors this month. Under cover: 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.

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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 Lethbridge. 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