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Alberta, Canada

Planting calendar for Airdrie

Last frost around May 15, first frost around September 27: about 135 frost-free days.

Last frost
May 15
on average
First frost
September 27
on average
Frost-free days
135
in a typical year

Sow now: November

See the whole year

Outdoors

Nothing this month.

Under cover

The year at a glance

When each crop can be sown in Airdrie. 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 Airdrie, month by month. Each month says whether you can sow outdoors, under cover, or both.
CropJJanFFebMMarAAprMMayJJunJJulAAugSSepOOctNNovDDec
Fruiting
TomatoUnder cover onlyJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Sow under coverJune: Sow under coverJuly: Not this monthAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Chile pepperUnder cover onlyJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Sow under coverJune: Sow under coverJuly: Not this monthAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Bell pepperUnder cover onlyJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Not this monthJune: Sow under coverJuly: Not this monthAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
EggplantUnder cover onlyJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Not this monthJune: Sow under coverJuly: Not this monthAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
ZucchiniJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Sow under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
CucumberJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Sow under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Winter squashUnder cover onlyJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Sow under coverJune: Sow under coverJuly: Not this monthAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Sweet cornJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Sow under coverJune: Sow outdoors and under coverJuly: Sow under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Roots
CarrotJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
BeetJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
ParsnipJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
RadishJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow outdoors and under coverSeptember: Sow under coverOctober: Not this monthNovember: Not this monthDecember: Not this month
PotatoJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Plant under coverMay: Plant outdoors and under coverJune: Plant outdoors and under coverJuly: Plant under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
TurnipJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Leaves
LettuceJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
SpinachJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow outdoors and under coverSeptember: Sow under coverOctober: Not this monthNovember: Not this monthDecember: Not this month
Swiss chardJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
ArugulaJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow outdoors and under coverSeptember: Sow under coverOctober: Not this monthNovember: Not this monthDecember: Not this month
CeleryJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Beans and peas
Runner beanJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Sow under coverJune: Sow outdoors and under coverJuly: Sow under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Green beanJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Sow under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Fava beanJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow under coverJuly: Not this monthAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
PeaJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Onion family
OnionJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Plant under coverMay: Plant outdoors and under coverJune: Plant outdoors and under coverJuly: Plant under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
GarlicJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Not this monthJune: Not this monthJuly: Not this monthAugust: Plant under coverSeptember: Plant outdoors and under coverOctober: Plant outdoors and under coverNovember: Plant under coverDecember: Not this month
LeekJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
ScallionJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
ShallotJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Plant under coverMay: Plant outdoors and under coverJune: Plant outdoors and under coverJuly: Plant under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Brassicas
CabbageJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
BroccoliJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
CauliflowerJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Brussels sproutJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
KaleJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Bok choyJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow outdoors and under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
Herbs
BasilJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
ParsleyJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
CilantroJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
ChivesJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow under coverSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
MintJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Sow under coverMay: Sow outdoors and under coverJune: Sow outdoors and under coverJuly: Sow outdoors and under coverAugust: Sow outdoors and under coverSeptember: Sow under coverOctober: Not this monthNovember: Not this monthDecember: Not this month
Fruit
StrawberryJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Plant under coverMay: Plant outdoors and under coverJune: Plant outdoors and under coverJuly: Plant under coverAugust: Not this monthSeptember: Not this monthOctober: Not this monthNovember: Not this monthDecember: Not this month
RaspberryJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Not this monthJune: Not this monthJuly: Not this monthAugust: Not this monthSeptember: Plant under coverOctober: Plant outdoors and under coverNovember: Plant under coverDecember: Not this month
RhubarbJanuary: Not this monthFebruary: Not this monthMarch: Not this monthApril: Not this monthMay: Not this monthJune: Not this monthJuly: Not this monthAugust: Plant under coverSeptember: Plant outdoors and under coverOctober: Plant outdoors and under coverNovember: Plant under coverDecember: Not this month

Fruit rows show when to plant, not sow.

Crop by crop

Fruiting

TomatoUnder cover May 22 to Jun 16
Tomato growing on a plot
Sow outdoors
Not here: season too short
Under cover
May 22 to Jun 16
First harvest
About 70 days after sowing. Sown on May 22, ready around July 31.
Warmth
Tender: needs days averaging 12°C or more, and no frost.
Tomato across Canada, town by town
Chile pepperUnder cover May 21 to Jun 16
Chile pepper growing on a plot
Sow outdoors
Not here: season too short
Under cover
May 21 to Jun 16
First harvest
About 84 days after sowing. Sown on May 21, ready around August 13.
Warmth
Tender: needs days averaging 12°C or more, and no frost.
Chile pepper across Canada, town by town
Bell pepperUnder cover May 26 to Jun 21
Bell pepper growing on a plot
Sow outdoors
Not here: season too short
Under cover
May 26 to Jun 21
First harvest
About 78 days after sowing. Sown on May 26, ready around August 12.
Warmth
Tender: needs days averaging 12°C or more, and no frost.
Bell pepper across Canada, town by town
EggplantUnder cover May 26 to Jun 16
Eggplant growing on a plot
Sow outdoors
Not here: season too short
Under cover
May 26 to Jun 16
First harvest
About 90 days after sowing. Sown on May 26, ready around August 24.
Warmth
Tender: needs days averaging 12°C or more, and no frost.
Eggplant across Canada, town by town
ZucchiniOutdoors Jun 18 to Jul 21; Under cover May 21 to Aug 18
Zucchini growing on a plot
Sow outdoors
Jun 18 to Jul 21
Under cover
May 21 to Aug 18
First harvest
About 57 days after sowing. Sown on June 18, ready around August 14.
Warmth
Tender: needs days averaging 12°C or more, and no frost.
Zucchini across Canada, town by town
CucumberOutdoors Jun 18 to Jul 14; Under cover May 21 to Aug 11
Cucumber growing on a plot
Sow outdoors
Jun 18 to Jul 14
Under cover
May 21 to Aug 11
First harvest
About 67 days after sowing. Sown on June 18, ready around August 24.
Warmth
Tender: needs days averaging 12°C or more, and no frost.
Cucumber across Canada, town by town
Winter squashUnder cover May 21 to Jun 21
Winter squash growing on a plot
Sow outdoors
Not here: season too short
Under cover
May 21 to Jun 21
First harvest
About 70 days after sowing. Sown on May 21, ready around July 30.
Warmth
Tender: needs days averaging 12°C or more, and no frost.
Winter squash across Canada, town by town
Sweet cornOutdoors Jun 13 to Jun 27; Under cover May 16 to May 30, and Jun 13 to Jun 27, and Jul 11 to Jul 25
Sweet corn growing on a plot
Sow outdoors
Jun 13 to Jun 27
Under cover
May 16 to May 30, and Jun 13 to Jun 27, and Jul 11 to Jul 25
First harvest
About 160 days after sowing. Sown on June 13, ready around November 20.
Warmth
Tender: needs days averaging 11°C or more, and no frost.
Sweet corn across Canada, town by town

Roots

CarrotOutdoors May 7 to Jul 21; Under cover Apr 9 to Aug 18
Carrot growing on a plot
Sow outdoors
May 7 to Jul 21
Under cover
Apr 9 to Aug 18
First harvest
About 81 days after sowing. Sown on May 7, ready around July 27.
Warmth
Hardy: grows once days average 7°C.
Carrot across Canada, town by town
BeetOutdoors May 7 to Aug 3; Under cover Apr 9 to Aug 31
Beet growing on a plot
Sow outdoors
May 7 to Aug 3
Under cover
Apr 9 to Aug 31
First harvest
About 55 days after sowing. Sown on May 7, ready around July 1.
Warmth
Hardy: grows once days average 7°C.
Beet across Canada, town by town
ParsnipOutdoors May 1 to Jul 2; Under cover Apr 3 to Jul 30
Parsnip growing on a plot
Sow outdoors
May 1 to Jul 2
Under cover
Apr 3 to Jul 30
First harvest
About 100 days after sowing. Sown on May 1, ready around August 9.
Warmth
Hardy: grows once days average 6°C.
Parsnip across Canada, town by town
RadishOutdoors May 1 to Aug 24; Under cover Apr 3 to Sep 21
Radish growing on a plot
Sow outdoors
May 1 to Aug 24
Under cover
Apr 3 to Sep 21
First harvest
About 20 days after sowing. Sown on May 1, ready around May 21.
Warmth
Hardy: grows once days average 6°C; bolts in hot weather.
Radish across Canada, town by town
PotatoOutdoors May 1 to Jun 26; Under cover Apr 3 to Jul 24
Potato growing on a plot
Plant outdoors
May 1 to Jun 26
Under cover
Apr 3 to Jul 24
First harvest
About 73 days after planting. Planted on May 1, ready around July 13.
Warmth
Hardy: grows once days average 6°C.
Potato across Canada, town by town
TurnipOutdoors May 1 to Jul 26; Under cover Apr 3 to Aug 23
Turnip growing on a plot
Sow outdoors
May 1 to Jul 26
Under cover
Apr 3 to Aug 23
First harvest
About 42 days after sowing. Sown on May 1, ready around June 12.
Warmth
Hardy: grows once days average 6°C.
Turnip across Canada, town by town

Leaves

LettuceOutdoors May 3 to Jul 26; Under cover Apr 5 to Aug 23
Lettuce growing on a plot
Sow outdoors
May 3 to Jul 26
Under cover
Apr 5 to Aug 23
First harvest
About 51 days after sowing. Sown on May 3, ready around June 23.
Warmth
Hardy: grows once days average 6°C; bolts in hot weather.
Lettuce across Canada, town by town
SpinachOutdoors May 1 to Aug 18; Under cover Apr 3 to Sep 15
Spinach growing on a plot
Sow outdoors
May 1 to Aug 18
Under cover
Apr 3 to Sep 15
First harvest
About 31 days after sowing. Sown on May 1, ready around June 1.
Warmth
Hardy: grows once days average 6°C; bolts in hot weather.
Spinach across Canada, town by town
Swiss chardOutdoors May 7 to Jul 26; Under cover Apr 9 to Aug 23
Swiss chard growing on a plot
Sow outdoors
May 7 to Jul 26
Under cover
Apr 9 to Aug 23
First harvest
About 47 days after sowing. Sown on May 7, ready around June 23.
Warmth
Hardy: grows once days average 7°C.
Swiss chard across Canada, town by town
ArugulaOutdoors May 1 to Aug 19; Under cover Apr 3 to Sep 16
Arugula growing on a plot
Sow outdoors
May 1 to Aug 19
Under cover
Apr 3 to Sep 16
First harvest
About 28 days after sowing. Sown on May 1, ready around May 29.
Warmth
Hardy: grows once days average 6°C; bolts in hot weather.
Arugula across Canada, town by town
CeleryOutdoors Apr 28 to Jun 27; Under cover Mar 31 to Jul 25
Celery growing on a plot
Sow outdoors
Apr 28 to Jun 27
Under cover
Mar 31 to Jul 25
First harvest
About 93 days after sowing. Sown on April 28, ready around July 30.
Warmth
Hardy: grows once days average 5°C.
Celery across Canada, town by town

Beans and peas

Runner beanOutdoors Jun 13 to Jul 4; Under cover May 16 to Aug 1
Runner bean growing on a plot
Sow outdoors
Jun 13 to Jul 4
Under cover
May 16 to Aug 1
First harvest
About 90 days after sowing. Sown on June 13, ready around September 11.
Warmth
Tender: needs days averaging 11°C or more, and no frost.
Runner bean across Canada, town by town
Green beanOutdoors Jun 13 to Jul 18; Under cover May 16 to Aug 15
Green bean growing on a plot
Sow outdoors
Jun 13 to Jul 18
Under cover
May 16 to Aug 15
First harvest
About 65 days after sowing. Sown on June 13, ready around August 17.
Warmth
Tender: needs days averaging 11°C or more, and no frost.
Green bean across Canada, town by town
Fava beanOutdoors Apr 25 to May 13; Under cover Mar 28 to Apr 15, and Apr 25 to May 13, and May 23 to Jun 10
Fava bean growing on a plot
Sow outdoors
Apr 25 to May 13
Under cover
Mar 28 to Apr 15, and Apr 25 to May 13, and May 23 to Jun 10
First harvest
About 220 days after sowing. Sown on April 25, ready around December 1.
Warmth
Hardy: goes in as the weather cools, and grows on through winter.
Fava bean across Canada, town by town
PeaOutdoors May 1 to Jul 27; Under cover Apr 3 to Aug 24
Pea growing on a plot
Sow outdoors
May 1 to Jul 27
Under cover
Apr 3 to Aug 24
First harvest
About 57 days after sowing. Sown on May 1, ready around June 27.
Warmth
Hardy: grows once days average 6°C; bolts in hot weather.
Pea across Canada, town by town

Onion family

OnionOutdoors Apr 30 to Jun 20; Under cover Apr 2 to Jul 18
Onion growing on a plot
Plant outdoors
Apr 30 to Jun 20
Under cover
Apr 2 to Jul 18
First harvest
About 108 days after planting. Planted on April 30, ready around August 16.
Warmth
Hardy: grows once days average 6°C.
Onion across Canada, town by town
GarlicOutdoors Sep 12 to Oct 10; Under cover Aug 15 to Nov 7
Garlic growing on a plot
Plant outdoors
Sep 12 to Oct 10
Under cover
Aug 15 to Nov 7
First harvest
About 250 days after planting. Planted on September 12, ready around May 20.
Warmth
Hardy: goes in as the weather cools, and grows on through winter.
Garlic across Canada, town by town
LeekOutdoors May 1 to Jul 8; Under cover Apr 3 to Aug 5
Leek growing on a plot
Sow outdoors
May 1 to Jul 8
Under cover
Apr 3 to Aug 5
First harvest
About 121 days after sowing. Sown on May 1, ready around August 30.
Warmth
Hardy: grows once days average 6°C.
Leek across Canada, town by town
ScallionOutdoors Apr 28 to Aug 4; Under cover Mar 31 to Sep 1
Scallion growing on a plot
Sow outdoors
Apr 28 to Aug 4
Under cover
Mar 31 to Sep 1
First harvest
About 44 days after sowing. Sown on April 28, ready around June 11.
Warmth
Hardy: grows once days average 5°C.
Scallion across Canada, town by town
ShallotOutdoors Apr 25 to Jul 6; Under cover Mar 28 to Aug 3
Shallot growing on a plot
Plant outdoors
Apr 25 to Jul 6
Under cover
Mar 28 to Aug 3
First harvest
About 84 days after planting. Planted on April 25, ready around July 18.
Warmth
Hardy: grows once days average 5°C.
Shallot across Canada, town by town

Brassicas

CabbageOutdoors May 1 to Jul 21; Under cover Apr 3 to Aug 18
Cabbage growing on a plot
Sow outdoors
May 1 to Jul 21
Under cover
Apr 3 to Aug 18
First harvest
About 82 days after sowing. Sown on May 1, ready around July 22.
Warmth
Hardy: grows once days average 6°C.
Cabbage across Canada, town by town
BroccoliOutdoors May 7 to Jul 23; Under cover Apr 9 to Aug 20
Broccoli growing on a plot
Sow outdoors
May 7 to Jul 23
Under cover
Apr 9 to Aug 20
First harvest
About 72 days after sowing. Sown on May 7, ready around July 18.
Warmth
Hardy: grows once days average 7°C.
Broccoli across Canada, town by town
CauliflowerOutdoors May 1 to Jul 8; Under cover Apr 3 to Aug 5
Cauliflower growing on a plot
Sow outdoors
May 1 to Jul 8
Under cover
Apr 3 to Aug 5
First harvest
About 91 days after sowing. Sown on May 1, ready around July 31.
Warmth
Hardy: grows once days average 6°C; bolts in hot weather.
Cauliflower across Canada, town by town
Brussels sproutOutdoors May 1 to Jun 13; Under cover Apr 3 to Jul 11
Brussels sprout growing on a plot
Sow outdoors
May 1 to Jun 13
Under cover
Apr 3 to Jul 11
First harvest
About 288 days after sowing. Sown on May 1, ready around February 13.
Warmth
Hardy: grows once days average 6°C.
Brussels sprout across Canada, town by town
KaleOutdoors May 7 to Jul 30; Under cover Apr 9 to Aug 27
Kale growing on a plot
Sow outdoors
May 7 to Jul 30
Under cover
Apr 9 to Aug 27
First harvest
About 63 days after sowing. Sown on May 7, ready around July 9.
Warmth
Hardy: grows once days average 7°C.
Kale across Canada, town by town
Bok choyOutdoors May 13 to Aug 8; Under cover Apr 15 to Sep 5
Bok choy growing on a plot
Sow outdoors
May 13 to Aug 8
Under cover
Apr 15 to Sep 5
First harvest
About 38 days after sowing. Sown on May 13, ready around June 20.
Warmth
Hardy: grows once days average 8°C; bolts in hot weather.
Bok choy across Canada, town by town

Herbs

BasilOutdoors May 15 to Jul 22; Under cover Apr 17 to Aug 19
Basil growing on a plot
Sow outdoors
May 15 to Jul 22
Under cover
Apr 17 to Aug 19
First harvest
About 45 days after sowing. Sown on May 15, ready around June 29.
Warmth
Tender: needs days averaging 8°C or more, and no frost.
Basil across Canada, town by town
ParsleyOutdoors May 1 to Jul 26; Under cover Apr 3 to Aug 23
Parsley growing on a plot
Sow outdoors
May 1 to Jul 26
Under cover
Apr 3 to Aug 23
First harvest
About 53 days after sowing. Sown on May 1, ready around June 23.
Warmth
Hardy: grows once days average 6°C.
Parsley across Canada, town by town
CilantroOutdoors May 7 to Aug 6; Under cover Apr 9 to Sep 3
Cilantro growing on a plot
Sow outdoors
May 7 to Aug 6
Under cover
Apr 9 to Sep 3
First harvest
About 39 days after sowing. Sown on May 7, ready around June 15.
Warmth
Hardy: grows once days average 7°C; bolts in hot weather.
Cilantro across Canada, town by town
ChivesOutdoors May 1 to Jul 17; Under cover Apr 3 to Aug 14
Chives growing on a plot
Sow outdoors
May 1 to Jul 17
Under cover
Apr 3 to Aug 14
First harvest
Crops every year once it’s established.
Warmth
Hardy: grows once days average 6°C.
Chives across Canada, town by town
MintOutdoors May 7 to Aug 28; Under cover Apr 9 to Sep 25
Mint growing on a plot
Sow outdoors
May 7 to Aug 28
Under cover
Apr 9 to Sep 25
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 May 1 to Jul 1; Under cover Apr 3 to Jul 29
Strawberry growing on a plot
Plant outdoors
May 1 to Jul 1
Under cover
Apr 3 to Jul 29
First harvest
Crops every year once it’s established.
Warmth
Hardy: grows once days average 6°C.
Strawberry across Canada, town by town
RaspberryOutdoors Sep 29 to Oct 16; Under cover Sep 1 to Sep 18, and Sep 29 to Oct 16, and Oct 27 to Nov 13
Raspberry growing on a plot
Plant outdoors
Sep 29 to Oct 16
Under cover
Sep 1 to Sep 18, and Sep 29 to Oct 16, and Oct 27 to Nov 13
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 Sep 20 to Oct 14; Under cover Aug 23 to Nov 11
Rhubarb growing on a plot
Plant outdoors
Sep 20 to Oct 14
Under cover
Aug 23 to Nov 11
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

Questions about growing in Airdrie

When is the last frost in Airdrie?

On average around May 15, and the first autumn frost comes around September 27. 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 Airdrie?

Not reliably: the season too short. Sow them under cover May 22 to Jun 16, then grow them on under cover or plant out once frost has passed.

What can I sow in Airdrie 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.

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 Airdrie. 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