When to plant in Portage la Prairie, MB
Planting dates worked out from Portage la Prairie's own frost records, not a generic zone chart.
Safe to plant out
May 27
1 year in 10 has a later frost
Average last frost
May 15
about a 50% chance of a later one
Average first fall frost
Sep 28
1 year in 10 by Sep 15
Frost-free days
133
median, 1991–2020
Station used: Portage Southport · 7.8 km away · station 273 m, town 263 m. How we match towns to stations
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Apr 1 – Apr 15 | May 27 – Jun 10 | Jul 21 |
| Sweet pepper | Mar 18 – Apr 1 | May 27 – Jun 10 | Jul 26 |
| Lettuce (leaf) | Mar 19 – Mar 26 | Apr 23 – May 7 | Jun 2 |
| Peas | — | Apr 23 – May 21 | Jun 17 |
| Bush beans | — | May 20 – Jun 10 | Jul 9 |
| Carrot | — | May 2 – Jun 13 | Jul 1 |
| Beet | — | May 2 – Jun 13 | Jun 21 |
| Potato | — | May 2 – May 23 | Jul 11 |
| Kale | Mar 19 – Apr 2 | Apr 30 – May 14 | Jun 12 |
| Broccoli | Mar 12 – Mar 26 | Apr 23 – May 14 | Jun 22 |
| Cucumber | Apr 29 – May 6 | May 27 – Jun 10 | Jul 16 |
| Summer squash and zucchini | Apr 29 – May 6 | May 27 – Jun 10 | Jul 11 |
| Winter squash | Apr 29 – May 6 | May 27 – Jun 10 | Aug 15 |
| Sweet corn | — | May 20 – Jun 10 | Jul 19 |
| Onion (from sets) | — | Apr 23 – May 14 | Jul 22 |
| Garlic | — | Sep 14 – Oct 12 (fall) | following summer |
| Spinach | — | Apr 23 – May 21 | May 31 |
| Basil | Apr 15 – Apr 29 | May 27 – Jun 10 | Jul 23 |
Portage la Prairie'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 |
|---|---|
| 1993 | May 26 |
| 1996 | May 10 |
| 1997 | May 21 |
| 1998 | Apr 21 |
| 1999 | May 9 |
| 2000 | May 18 |
| 2001 | Apr 23 |
| 2002 | May 24 |
| 2003 | May 20 |
| 2004 | May 17 |
| 2005 | May 16 |
| 2006 | May 21 |
| 2007 | Apr 25 |
| 2008 | May 27 |
| 2010 | May 9 |
| 2011 | May 26 |
| 2012 | Apr 27 |
| 2013 | May 12 |
| 2014 | May 16 |
| 2015 | May 30 |
| 2016 | May 14 |
| 2017 | May 19 |
| 2018 | May 11 |
| 2019 | May 27 |
| 2020 | May 30 |
| 2021 | May 27 |
| 2022 | May 3 |
| 2023 | May 1 |
| 2024 | Apr 30 |
| 2025 | May 7 |
| 2026 | May 17 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1996 | 126 |
| 1997 | 141 |
| 1998 | 162 |
| 1999 | 133 |
| 2000 | 127 |
| 2001 | 152 |
| 2002 | 123 |
| 2003 | 132 |
| 2004 | 136 |
| 2005 | 141 |
| 2006 | 111 |
| 2007 | 158 |
| 2008 | 128 |
| 2010 | 132 |
| 2011 | 126 |
| 2013 | 126 |
| 2014 | 145 |
| 2015 | 125 |
| 2016 | 150 |
| 2017 | 146 |
| 2018 | 139 |
| 2019 | 135 |
| 2020 | 106 |
| 2021 | 145 |
| 2022 | 155 |
| 2023 | 160 |
| 2024 | 156 |
| 2025 | 152 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1996 | 12.8 °C |
| 1997 | 13.1 °C |
| 1998 | 15.1 °C |
| 1999 | 13.8 °C |
| 2000 | 13.3 °C |
| 2001 | 14.2 °C |
| 2002 | 13.4 °C |
| 2003 | 14.6 °C |
| 2004 | 12.1 °C |
| 2005 | 14.3 °C |
| 2006 | 15.3 °C |
| 2007 | 14.1 °C |
| 2008 | 12.9 °C |
| 2009 | 12.8 °C |
| 2010 | 15.1 °C |
| 2011 | 14.9 °C |
| 2012 | 16.1 °C |
| 2013 | 13.9 °C |
| 2014 | 13.3 °C |
| 2015 | 15.1 °C |
| 2016 | 14.6 °C |
| 2017 | 14.4 °C |
| 2018 | 14.6 °C |
| 2019 | 13.9 °C |
| 2020 | 13.9 °C |
| 2021 | 15.3 °C |
| 2022 | 13.9 °C |
| 2023 | 15.2 °C |
| 2024 | 15.4 °C |
| 2025 | 15.2 °C |
| 2026 | 14.5 °C |
What this means for you: Since 1993, Portage la Prairie's last spring frost has stayed at about the same time of year. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Portage Southport (NOAA GHCN-Daily, from Environment and Climate Change Canada). Years with too many missing days are left out.