Alberta, Canada
Planting calendar for Calgary
Last frost around May 16, first frost around September 25: about 132 frost-free days.
- Last frost
- May 16 on average
- First frost
- September 25 on average
- Frost-free days
- 132 in a typical year
Sow now: November
See the whole yearThe year at a glance
When each crop can be sown in Calgary. Tap a crop for exact dates and when it’s ready to harvest.
| Crop | JJan | FFeb | MMar | AApr | MMay | JJun | JJul | AAug | SSep | OOct | NNov | DDec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fruiting | ||||||||||||
| 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 | |
| January: Not this month | February: Not this month | March: Not this month | April: Not this month | May: Sow 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 | |
| January: Not this month | February: Not this month | March: Not this month | April: Not this month | May: Not this month | 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 | |
| January: Not this month | February: Not this month | March: Not this month | April: Not this month | May: Not this month | 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| Roots | ||||||||||||
| 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 | |
| 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 | |
| January: Not this month | February: Not this month | March: Not this month | April: Sow under cover | May: Sow outdoors and under cover | June: Sow outdoors and under cover | July: Sow under cover | August: Not this month | September: Not this month | October: Not this month | November: Not this month | December: Not this month | |
| 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 | |
| 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 | July: Plant 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: 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 | |
| Leaves | ||||||||||||
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| January: Not this month | February: Not this month | March: Not this month | April: Sow under cover | May: Sow outdoors and under cover | June: Sow outdoors and under cover | July: Sow under cover | August: Not this month | September: Not this month | October: Not this month | November: Not this month | December: Not this month | |
| Beans and peas | ||||||||||||
| 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: 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: 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 | |
| January: Not this month | February: Not this month | March: Not this month | 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 | |
| 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 | |
| Onion family | ||||||||||||
| 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 | July: Plant 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: Not this month | April: Not this month | May: Not this month | June: Not this month | July: Not this month | August: Plant under cover | September: Plant outdoors and under cover | October: Plant outdoors and under cover | November: Plant under cover | 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 | 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 | |
| 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 | |
| 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 | 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 | ||||||||||||
| 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 | |
| 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 | |
| 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 | |
| January: Not this month | February: Not this month | March: Not this month | April: Sow under cover | May: Sow outdoors and under cover | June: Sow outdoors and under cover | July: Sow under cover | August: Not this month | September: Not this month | October: Not this month | November: Not this month | December: Not this month | |
| 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 | |
| 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 | ||||||||||||
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| Fruit | ||||||||||||
| 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 | July: Plant 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: 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 | |
| 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: Plant under cover | September: Plant outdoors and 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 20 to Jun 27; Under cover May 23 to May 30, and Jun 20 to Jun 27, and Jul 18 to Jul 25

- Sow outdoors
- Jun 20 to Jun 27
- Under cover
- May 23 to May 30, and Jun 20 to Jun 27, and Jul 18 to Jul 25
- First harvest
- About 176 days after sowing. Sown on June 20, ready around December 13.
- Warmth
- Tender: needs days averaging 12°C or more, and no frost.
Chile pepperUnder cover May 22 to Jun 17

- Sow outdoors
- Not here: season too short
- Under cover
- May 22 to Jun 17
- First harvest
- About 84 days after sowing. Sown on May 22, ready around August 14.
- Warmth
- Tender: needs days averaging 12°C or more, and no frost.
Bell pepperUnder cover May 27 to Jun 22

- Sow outdoors
- Not here: season too short
- Under cover
- May 27 to Jun 22
- First harvest
- About 78 days after sowing. Sown on May 27, ready around August 13.
- Warmth
- Tender: needs days averaging 12°C or more, and no frost.
EggplantUnder cover May 27 to Jun 17

- Sow outdoors
- Not here: season too short
- Under cover
- May 27 to Jun 17
- First harvest
- About 90 days after sowing. Sown on May 27, ready around August 25.
- Warmth
- Tender: needs days averaging 12°C or more, and no frost.
ZucchiniOutdoors Jun 19 to Jul 24; Under cover May 22 to Aug 21

- Sow outdoors
- Jun 19 to Jul 24
- Under cover
- May 22 to Aug 21
- First harvest
- About 54 days after sowing. Sown on June 19, ready around August 12.
- Warmth
- Tender: needs days averaging 12°C or more, and no frost.
CucumberOutdoors Jun 19 to Jul 18; Under cover May 22 to Aug 15

- Sow outdoors
- Jun 19 to Jul 18
- Under cover
- May 22 to Aug 15
- First harvest
- About 63 days after sowing. Sown on June 19, ready around August 21.
- Warmth
- Tender: needs days averaging 12°C or more, and no frost.
Winter squashOutdoors Jun 19 to Jun 29; Under cover May 22 to Jun 1, and Jun 19 to Jun 29, and Jul 17 to Jul 27

- Sow outdoors
- Jun 19 to Jun 29
- Under cover
- May 22 to Jun 1, and Jun 19 to Jun 29, and Jul 17 to Jul 27
- First harvest
- About 176 days after sowing. Sown on June 19, ready around December 12.
- Warmth
- Tender: needs days averaging 12°C or more, and no frost.
Sweet cornOutdoors Jun 14 to Jul 2; Under cover May 17 to Jun 4, and Jun 14 to Jul 2, and Jul 12 to Jul 30

- Sow outdoors
- Jun 14 to Jul 2
- Under cover
- May 17 to Jun 4, and Jun 14 to Jul 2, and Jul 12 to Jul 30
- First harvest
- About 97 days after sowing. Sown on June 14, ready around September 19.
- Warmth
- Tender: needs days averaging 11°C or more, and no frost.
Roots
CarrotOutdoors May 6 to Jul 24; Under cover Apr 8 to Aug 21

- Sow outdoors
- May 6 to Jul 24
- Under cover
- Apr 8 to Aug 21
- First harvest
- About 80 days after sowing. Sown on May 6, ready around July 25.
- Warmth
- Hardy: grows once days average 7°C.
BeetOutdoors May 6 to Aug 5; Under cover Apr 8 to Sep 2

- Sow outdoors
- May 6 to Aug 5
- Under cover
- Apr 8 to Sep 2
- First harvest
- About 55 days after sowing. Sown on May 6, ready around June 30.
- Warmth
- Hardy: grows once days average 7°C.
ParsnipOutdoors Apr 30 to Jul 5; Under cover Apr 2 to Aug 2

- Sow outdoors
- Apr 30 to Jul 5
- Under cover
- Apr 2 to Aug 2
- First harvest
- About 99 days after sowing. Sown on April 30, ready around August 7.
- Warmth
- Hardy: grows once days average 6°C.
RadishOutdoors Apr 30 to Aug 25; Under cover Apr 2 to Sep 22

- Sow outdoors
- Apr 30 to Aug 25
- Under cover
- Apr 2 to Sep 22
- First harvest
- About 20 days after sowing. Sown on April 30, ready around May 20.
- Warmth
- Hardy: grows once days average 6°C; bolts in hot weather.
PotatoOutdoors Apr 30 to Jun 25; Under cover Apr 2 to Jul 23

- Plant outdoors
- Apr 30 to Jun 25
- Under cover
- Apr 2 to Jul 23
- First harvest
- About 73 days after planting. Planted on April 30, ready around July 12.
- Warmth
- Hardy: grows once days average 6°C.
TurnipOutdoors Apr 30 to Jul 27; Under cover Apr 2 to Aug 24

- Sow outdoors
- Apr 30 to Jul 27
- Under cover
- Apr 2 to Aug 24
- First harvest
- About 42 days after sowing. Sown on April 30, ready around June 11.
- Warmth
- Hardy: grows once days average 6°C.
Leaves
LettuceOutdoors May 2 to Jul 27; Under cover Apr 4 to Aug 24

- Sow outdoors
- May 2 to Jul 27
- Under cover
- Apr 4 to Aug 24
- First harvest
- About 51 days after sowing. Sown on May 2, ready around June 22.
- Warmth
- Hardy: grows once days average 6°C; bolts in hot weather.
SpinachOutdoors Apr 30 to Aug 19; Under cover Apr 2 to Sep 16

- Sow outdoors
- Apr 30 to Aug 19
- Under cover
- Apr 2 to Sep 16
- First harvest
- About 31 days after sowing. Sown on April 30, ready around May 31.
- Warmth
- Hardy: grows once days average 6°C; bolts in hot weather.
Swiss chardOutdoors May 6 to Jul 27; Under cover Apr 8 to Aug 24

- Sow outdoors
- May 6 to Jul 27
- Under cover
- Apr 8 to Aug 24
- First harvest
- About 47 days after sowing. Sown on May 6, ready around June 22.
- Warmth
- Hardy: grows once days average 7°C.
ArugulaOutdoors Apr 30 to Aug 21; Under cover Apr 2 to Sep 18

- Sow outdoors
- Apr 30 to Aug 21
- Under cover
- Apr 2 to Sep 18
- First harvest
- About 28 days after sowing. Sown on April 30, ready around May 28.
- Warmth
- Hardy: grows once days average 6°C; bolts in hot weather.
CeleryOutdoors Apr 26 to Jun 25; Under cover Mar 29 to Jul 23

- Sow outdoors
- Apr 26 to Jun 25
- Under cover
- Mar 29 to Jul 23
- First harvest
- About 91 days after sowing. Sown on April 26, ready around July 26.
- Warmth
- Hardy: grows once days average 5°C.
Beans and peas
Runner beanOutdoors Jun 14 to Jul 9; Under cover May 17 to Aug 6

- Sow outdoors
- Jun 14 to Jul 9
- Under cover
- May 17 to Aug 6
- First harvest
- About 83 days after sowing. Sown on June 14, ready around September 5.
- Warmth
- Tender: needs days averaging 11°C or more, and no frost.
Green beanOutdoors Jun 14 to Jul 21; Under cover May 17 to Aug 18

- Sow outdoors
- Jun 14 to Jul 21
- Under cover
- May 17 to Aug 18
- First harvest
- About 63 days after sowing. Sown on June 14, ready around August 16.
- Warmth
- Tender: needs days averaging 11°C or more, and no frost.
Fava beanOutdoors Apr 23 to May 12; Under cover Mar 26 to Apr 14, and Apr 23 to May 12, and May 21 to Jun 9

- Sow outdoors
- Apr 23 to May 12
- Under cover
- Mar 26 to Apr 14, and Apr 23 to May 12, and May 21 to Jun 9
- First harvest
- About 220 days after sowing. Sown on April 23, ready around November 29.
- Warmth
- Hardy: goes in as the weather cools, and grows on through winter.
PeaOutdoors Apr 30 to Jul 29; Under cover Apr 2 to Aug 26

- Sow outdoors
- Apr 30 to Jul 29
- Under cover
- Apr 2 to Aug 26
- First harvest
- About 57 days after sowing. Sown on April 30, ready around June 26.
- Warmth
- Hardy: grows once days average 6°C; bolts in hot weather.
Onion family
OnionOutdoors Apr 28 to Jun 18; Under cover Mar 31 to Jul 16

- Plant outdoors
- Apr 28 to Jun 18
- Under cover
- Mar 31 to Jul 16
- First harvest
- About 105 days after planting. Planted on April 28, ready around August 11.
- Warmth
- Hardy: grows once days average 6°C.
GarlicOutdoors Sep 14 to Oct 11; Under cover Aug 17 to Nov 8

- Plant outdoors
- Sep 14 to Oct 11
- Under cover
- Aug 17 to Nov 8
- First harvest
- About 250 days after planting. Planted on September 14, ready around May 22.
- Warmth
- Hardy: goes in as the weather cools, and grows on through winter.
LeekOutdoors Apr 30 to Jul 11; Under cover Apr 2 to Aug 8

- Sow outdoors
- Apr 30 to Jul 11
- Under cover
- Apr 2 to Aug 8
- First harvest
- About 119 days after sowing. Sown on April 30, ready around August 27.
- Warmth
- Hardy: grows once days average 6°C.
ScallionOutdoors Apr 26 to Aug 6; Under cover Mar 29 to Sep 3

- Sow outdoors
- Apr 26 to Aug 6
- Under cover
- Mar 29 to Sep 3
- First harvest
- About 44 days after sowing. Sown on April 26, ready around June 9.
- Warmth
- Hardy: grows once days average 5°C.
ShallotOutdoors Apr 23 to Jul 6; Under cover Mar 26 to Aug 3

- Plant outdoors
- Apr 23 to Jul 6
- Under cover
- Mar 26 to Aug 3
- First harvest
- About 82 days after planting. Planted on April 23, ready around July 14.
- Warmth
- Hardy: grows once days average 5°C.
Brassicas
CabbageOutdoors Apr 30 to Jul 23; Under cover Apr 2 to Aug 20

- Sow outdoors
- Apr 30 to Jul 23
- Under cover
- Apr 2 to Aug 20
- First harvest
- About 82 days after sowing. Sown on April 30, ready around July 21.
- Warmth
- Hardy: grows once days average 6°C.
BroccoliOutdoors May 6 to Jul 25; Under cover Apr 8 to Aug 22

- Sow outdoors
- May 6 to Jul 25
- Under cover
- Apr 8 to Aug 22
- First harvest
- About 72 days after sowing. Sown on May 6, ready around July 17.
- Warmth
- Hardy: grows once days average 7°C.
CauliflowerOutdoors Apr 30 to Jul 11; Under cover Apr 2 to Aug 8

- Sow outdoors
- Apr 30 to Jul 11
- Under cover
- Apr 2 to Aug 8
- First harvest
- About 90 days after sowing. Sown on April 30, ready around July 29.
- Warmth
- Hardy: grows once days average 6°C; bolts in hot weather.
Brussels sproutOutdoors Apr 30 to Jun 18; Under cover Apr 2 to Jul 16

- Sow outdoors
- Apr 30 to Jun 18
- Under cover
- Apr 2 to Jul 16
- First harvest
- About 288 days after sowing. Sown on April 30, ready around February 12.
- Warmth
- Hardy: grows once days average 6°C.
KaleOutdoors May 6 to Aug 1; Under cover Apr 8 to Aug 29

- Sow outdoors
- May 6 to Aug 1
- Under cover
- Apr 8 to Aug 29
- First harvest
- About 63 days after sowing. Sown on May 6, ready around July 8.
- Warmth
- Hardy: grows once days average 7°C.
Bok choyOutdoors May 12 to Aug 10; Under cover Apr 14 to Sep 7

- Sow outdoors
- May 12 to Aug 10
- Under cover
- Apr 14 to Sep 7
- First harvest
- About 38 days after sowing. Sown on May 12, ready around June 19.
- Warmth
- Hardy: grows once days average 8°C; bolts in hot weather.
Herbs
BasilOutdoors May 16 to Jul 25; Under cover Apr 18 to Aug 22

- Sow outdoors
- May 16 to Jul 25
- Under cover
- Apr 18 to Aug 22
- First harvest
- About 45 days after sowing. Sown on May 16, ready around June 30.
- Warmth
- Tender: needs days averaging 8°C or more, and no frost.
ParsleyOutdoors Apr 30 to Jul 27; Under cover Apr 2 to Aug 24

- Sow outdoors
- Apr 30 to Jul 27
- Under cover
- Apr 2 to Aug 24
- First harvest
- About 53 days after sowing. Sown on April 30, ready around June 22.
- Warmth
- Hardy: grows once days average 6°C.
CilantroOutdoors May 6 to Aug 8; Under cover Apr 8 to Sep 5

- Sow outdoors
- May 6 to Aug 8
- Under cover
- Apr 8 to Sep 5
- First harvest
- About 39 days after sowing. Sown on May 6, ready around June 14.
- Warmth
- Hardy: grows once days average 7°C; bolts in hot weather.
ChivesOutdoors Apr 30 to Jul 16; Under cover Apr 2 to Aug 13

- Sow outdoors
- Apr 30 to Jul 16
- Under cover
- Apr 2 to Aug 13
- First harvest
- Crops every year once it’s established.
- Warmth
- Hardy: grows once days average 6°C.
MintOutdoors May 6 to Aug 30; Under cover Apr 8 to Sep 27

- Sow outdoors
- May 6 to Aug 30
- Under cover
- Apr 8 to Sep 27
- First harvest
- Crops every year once it’s established.
- Warmth
- Hardy: grows once days average 7°C.
Fruit
StrawberryOutdoors Apr 30 to Jun 30; Under cover Apr 2 to Jul 28

- Plant outdoors
- Apr 30 to Jun 30
- Under cover
- Apr 2 to Jul 28
- First harvest
- Crops every year once it’s established.
- Warmth
- Hardy: grows once days average 6°C.
RaspberryOutdoors Sep 30 to Oct 17; Under cover Sep 2 to Sep 19, and Sep 30 to Oct 17, and Oct 28 to Nov 14

- Plant outdoors
- Sep 30 to Oct 17
- Under cover
- Sep 2 to Sep 19, and Sep 30 to Oct 17, and Oct 28 to Nov 14
- First harvest
- Crops every year once it’s established.
- Warmth
- Hardy: goes in as the weather cools, and grows on through winter.
RhubarbOutdoors Sep 22 to Oct 15; Under cover Aug 25 to Nov 12

- Plant outdoors
- Sep 22 to Oct 15
- Under cover
- Aug 25 to Nov 12
- First harvest
- Crops every year once it’s established.
- Warmth
- Hardy: goes in as the weather cools, and grows on through winter.
Questions about growing in Calgary
When is the last frost in Calgary?
On average around May 16, and the first autumn frost comes around September 25. 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 Calgary?
Yes. Plant them outdoors Jun 20 to Jun 27, or under cover May 23 to May 30, and Jun 20 to Jun 27, and Jul 18 to Jul 25.
What can I sow in Calgary 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.
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
