When to plant in Strathmore, AB
Planting dates worked out from Strathmore's own frost records, not a generic zone chart.
Safe to plant out
May 25
1 year in 10 has a later frost
Average last frost
May 17
about a 50% chance of a later one
Average first fall frost
Sep 22
1 year in 10 by Sep 12
Frost-free days
128
median, 1991–2020
Station used: Calgary Int'l Cs · 43.5 km away · station 1082 m, town 976 m. How we match towns to stations
The nearest reliable station is 44 km away, so frost dates here may be off by a week or more. Check them against local experience.
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Apr 4 – Apr 18 | May 30 – Jun 13 | Jul 24 |
| Sweet pepper | Mar 21 – Apr 4 | May 30 – Jun 13 | Jul 29 |
| Lettuce (leaf) | Mar 21 – Mar 28 | Apr 25 – May 9 | Jun 4 |
| Peas | — | Apr 25 – May 23 | Jun 19 |
| Bush beans | — | May 22 – Jun 12 | Jul 11 |
| Carrot | — | May 5 – Jun 16 | Jul 4 |
| Beet | — | May 5 – Jun 16 | Jun 24 |
| Potato | — | May 5 – May 26 | Jul 14 |
| Kale | Mar 21 – Apr 4 | May 2 – May 16 | Jun 14 |
| Broccoli | Mar 14 – Mar 28 | Apr 25 – May 16 | Jun 24 |
| Cucumber | May 2 – May 9 | May 30 – Jun 13 | Jul 19 |
| Summer squash and zucchini | May 2 – May 9 | May 30 – Jun 13 | Jul 14 |
| Winter squash | May 2 – May 9 | May 30 – Jun 13 | Aug 18 |
| Sweet corn | — | May 22 – Jun 12 | Jul 21 |
| Onion (from sets) | — | Apr 25 – May 16 | Jul 24 |
| Garlic | — | Sep 8 – Oct 6 (fall) | following summer |
| Spinach | — | Apr 25 – May 23 | Jun 2 |
| Basil | Apr 18 – May 2 | May 30 – Jun 13 | Jul 26 |
Strathmore's weather over time
How the growing season has shifted here, year by year, from the station's own records.
Each year's last spring frostLong-term trend
See the data as a table
| Year | Last spring frost |
|---|---|
| 2001 | May 21 |
| 2002 | May 24 |
| 2003 | May 19 |
| 2004 | May 24 |
| 2005 | May 11 |
| 2006 | May 11 |
| 2007 | Apr 30 |
| 2009 | Jun 8 |
| 2010 | May 24 |
| 2011 | May 29 |
| 2012 | May 19 |
| 2013 | May 2 |
| 2014 | May 12 |
| 2015 | May 13 |
| 2016 | May 15 |
| 2017 | May 16 |
| 2018 | May 2 |
| 2019 | May 20 |
| 2020 | May 13 |
| 2021 | May 22 |
| 2022 | May 22 |
| 2023 | Apr 26 |
| 2024 | May 9 |
| 2025 | May 6 |
| 2026 | May 18 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 2001 | 130 |
| 2002 | 121 |
| 2003 | 119 |
| 2004 | 117 |
| 2005 | 132 |
| 2006 | 128 |
| 2007 | 135 |
| 2009 | 113 |
| 2010 | 116 |
| 2011 | 125 |
| 2012 | 136 |
| 2013 | 147 |
| 2014 | 118 |
| 2015 | 142 |
| 2016 | 120 |
| 2017 | 122 |
| 2018 | 132 |
| 2019 | 129 |
| 2020 | 150 |
| 2021 | 134 |
| 2022 | 121 |
| 2023 | 155 |
| 2024 | 134 |
| 2025 | 151 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 2001 | 13.0 °C |
| 2002 | 11.2 °C |
| 2003 | 12.5 °C |
| 2005 | 11.9 °C |
| 2006 | 13.7 °C |
| 2007 | 12.2 °C |
| 2009 | 12.1 °C |
| 2010 | 10.8 °C |
| 2011 | 11.8 °C |
| 2012 | 13.1 °C |
| 2014 | 12.3 °C |
| 2015 | 13.2 °C |
| 2016 | 12.6 °C |
| 2017 | 13.2 °C |
| 2018 | 11.8 °C |
| 2019 | 11.5 °C |
| 2020 | 11.9 °C |
| 2021 | 13.2 °C |
| 2022 | 12.8 °C |
| 2023 | 13.9 °C |
| 2024 | 13.0 °C |
| 2025 | 13.5 °C |
| 2026 | 12.6 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Calgary Int'l Cs (NOAA GHCN-Daily, from Environment and Climate Change Canada). Years with too many missing days are left out.