Frost dates for Maplewood, MN
When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.
Last spring frost
April 23
typical year
Safe to plant
May 7
frost is over in 9 of 10 years
First fall frost
October 20
typical year
Growing season
177 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | – | Mar 26 – Apr 9 | – |
| Spinach | – | Mar 12 – Apr 2 | Aug 25 – Sep 8 |
| Lettuce | – | Mar 26 – Apr 16 | Aug 25 – Sep 8 |
| Radishes | – | Mar 26 – May 7 | Sep 8 – 22 |
| Onions | – | Mar 26 – Apr 9 | – |
| Potatoes | – | Apr 2 – 16 | – |
| Carrots | – | Apr 2 – 23 | Jul 28 – Aug 11 |
| Beets | – | Mar 26 – Apr 9 | Aug 11 – 25 |
| Kale | Feb 12 – 26 | Mar 26 – Apr 9 | Aug 11 – 25 |
| Broccoli | Feb 12 – 26 | Apr 9 – 23 | Aug 11 – 25 |
| Cabbage | Jan 29 – Feb 12 | Mar 26 – Apr 9 | Aug 11 – 25 |
| Garlic | – | – | Sep 8 – 29 |
| Warm-season crops | |||
| Tomatoes | Mar 12 – 26 | May 7 – 21 | – |
| Peppers | Mar 5 – 19 | May 14 – 28 | – |
| Cucumbers | – | May 7 – 28 | – |
| Zucchini | – | May 7 – Jun 4 | – |
| Pumpkins | – | May 7 – 28 | – |
| Green beans | – | May 7 – Aug 11 | – |
| Sweet corn | – | May 7 – Jun 4 | – |
| Basil | Apr 2 – 16 | May 14 – 21 | – |
Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.
The year at a glance
Start indoors Plant outside Fall planting
The chance of frost, by date
| 1 year in 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | May 7 | April 23 | April 9 |
| Fall frost before | October 3 | October 20 | November 2 |
Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.
Hard freeze (28°F)
A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around April 14 (April 27 in a late year), and the first one in fall around October 31.
Towns that use these dates
This is the nearest NOAA station with frost records for 15 towns.
Maplewood, Shoreview, White Bear Lake, Lino Lakes, New Brighton, Vadnais Heights, Mounds View, Little Canada, Arden Hills, North Oaks, Circle Pines, Centerville, Lexington, Birchwood Village, Gem Lake
Where these dates come from
NOAA weather station VADNAIS LAKE, MN US (USC00218477), 1991–2020 climate normals. It's the nearest station for 8 zip codes, all within 10 miles:
55014, 55038, 55109, 55110, 55112, 55117, 55126, 55127
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.