When to plant in Mapleton, MN
Planting dates worked out from Mapleton's own frost records, not a generic zone chart.
Safe to plant out
May 14
1 year in 10 has a later frost
Average last frost
Apr 30
about a 50% chance of a later one
Average first fall frost
Oct 4
1 year in 10 by Sep 17
Frost-free days
156
median, 1991–2020
Station used: Amboy · 17.6 km away · station 314 m, town 316 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 | Mar 19 – Apr 2 | May 14 – May 28 | Jul 8 |
| Sweet pepper | Mar 5 – Mar 19 | May 14 – May 28 | Jul 13 |
| Lettuce (leaf) | Mar 2 – Mar 9 | Apr 6 – Apr 20 | May 16 |
| Peas | — | Apr 6 – May 4 | May 31 |
| Bush beans | — | May 7 – May 28 | Jun 26 |
| Carrot | — | Apr 16 – May 28 | Jun 15 |
| Beet | — | Apr 16 – May 28 | Jun 5 |
| Potato | — | Apr 16 – May 7 | Jun 25 |
| Kale | Mar 2 – Mar 16 | Apr 13 – Apr 27 | May 26 |
| Broccoli | Feb 23 – Mar 9 | Apr 6 – Apr 27 | Jun 5 |
| Cucumber | Apr 16 – Apr 23 | May 14 – May 28 | Jul 3 |
| Summer squash and zucchini | Apr 16 – Apr 23 | May 14 – May 28 | Jun 28 |
| Winter squash | Apr 16 – Apr 23 | May 14 – May 28 | Aug 2 |
| Sweet corn | — | May 7 – May 28 | Jul 6 |
| Onion (from sets) | — | Apr 6 – Apr 27 | Jul 5 |
| Garlic | — | Sep 20 – Oct 18 (fall) | following summer |
| Spinach | — | Apr 6 – May 4 | May 14 |
| Basil | Apr 2 – Apr 16 | May 14 – May 28 | Jul 10 |
Mapleton'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 |
|---|---|
| 1992 | May 6 |
| 1993 | Apr 30 |
| 1994 | Apr 30 |
| 1995 | May 3 |
| 1996 | May 12 |
| 1997 | May 21 |
| 1998 | Apr 29 |
| 2000 | Apr 29 |
| 2002 | May 20 |
| 2003 | Apr 17 |
| 2004 | May 15 |
| 2005 | May 4 |
| 2006 | Apr 9 |
| 2007 | Apr 15 |
| 2008 | Apr 29 |
| 2009 | Apr 21 |
| 2010 | May 9 |
| 2011 | May 3 |
| 2012 | Apr 20 |
| 2013 | May 12 |
| 2014 | Apr 18 |
| 2015 | Apr 26 |
| 2016 | Apr 12 |
| 2017 | Apr 28 |
| 2018 | Apr 28 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1992 | 145 |
| 1993 | 154 |
| 1994 | 161 |
| 1995 | 141 |
| 1996 | 143 |
| 1997 | 146 |
| 1998 | 161 |
| 2002 | 126 |
| 2003 | 160 |
| 2004 | 139 |
| 2005 | 156 |
| 2006 | 184 |
| 2007 | 152 |
| 2008 | 169 |
| 2009 | 170 |
| 2010 | 146 |
| 2011 | 134 |
| 2012 | 155 |
| 2013 | 160 |
| 2014 | 147 |
| 2015 | 172 |
| 2016 | 178 |
| 2017 | 181 |
| 2018 | 158 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1992 | 15.4 °C |
| 1993 | 15.9 °C |
| 1994 | 17.3 °C |
| 1995 | 16.9 °C |
| 1996 | 15.9 °C |
| 1997 | 16.4 °C |
| 1998 | 18.4 °C |
| 2007 | 19.2 °C |
| 2008 | 17.8 °C |
| 2009 | 17.6 °C |
| 2010 | 19.4 °C |
| 2011 | 18.1 °C |
| 2012 | 19.8 °C |
| 2013 | 17.6 °C |
| 2014 | 17.6 °C |
| 2015 | 18.6 °C |
| 2016 | 18.9 °C |
| 2017 | 18.3 °C |
| 2018 | 18.1 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from Amboy (NOAA GHCN-Daily). Years with too many missing days are left out.