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Planting Calendar for Greenfield, WI

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The planting calendar below tells you when to plant in the SPRING and also plant in the FALL, based on your zip code or postal code.

Spring Planting Calendar

Our spring planting calendar starts with the very first dates that you can plant (based on the last spring frost). But if you've missed these dates, no worries! This is why we've added "last planting dates" to our spring calendar; this is meant to help new gardeners understand that if they missed the first spring planting window, they could still get crops in the ground.

In fact, many crops with short maturity times (such as radishes) can be succession planted all the way through the summer in northern areas. However, note that some cool-season crops, such as kale and lettuce, do not grow well in hot temperatures, which can cause bolting issues.  For some gardeners, especially in the South, a break to avoid summer heat is needed, but they can start once the heat has passed. 

The dates provided are based on the number of weeks before or after frost, so we can provide a unique calendar to every user in the country. Thus, several crops (especially similar crops) may appear to have the same date. Kale and lettuce, for example, or dates for starting seeds, like broccoli and cabbage. 

Fall Planting Calendar

When we say "fall," we really mean planting in summer in time for a fall harvest. Think of this as a second summer! It's easy to keep the crops going if you've already prepared the soil! 

Many crops that would be started indoors for a spring crop can just be plunked into the soil directly for a fall crop. Not only is the soil already warm but also there are less pests and it tends to be rainier so you don't need to water as often. Some fall vegetables need to be harvested by the first frost, but many are frost-tolerant and even taste better after a kiss of fall frost!

See each plant's individual Growing Guide for more specific planting, plant care, and harvesting information.

Specifically, on the charts, there are different columns labeled as follows:

  1. Start Seeds Indoors: When to sow seeds indoors to get an early start on the season.
  2. Plant Seedlings Outdoors: When to put small seedlings that you grew indoors (OR starter plants that you bought at a garden nursery) in the outdoor soil.
  3. Start Seeds Outdoors: When to plant seeds directly into the outdoor soil.
  4. Last Date to Plant: You may plant any time from the "start seeds" dates until this "last date." Don't wait any longer, or the crop won't have time to get to harvest before fall/winter frosts.

The "Moon Dates" indicate the best planting dates based on Moon phases. You can learn more about this age-old technique below.

When N/A appears in the chart, that starting method is typically not recommended, although it is likely still possible. 

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Planting Dates for Spring

On average, your last spring frost occurs on May 9 (at HALES CORNERS/WHITNALL PARK/BO, WI climate station, elevation 774 feet).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds OutdoorsLast Date to Plant
ArugulaFrost Mar 14-28
Moon Mar 14-25
Frost Apr 18-May 2
Moon Apr 18-23
Frost Apr 11-18
Moon Apr 11-18
Sep 10
AsparagusN/AN/AFrost Apr 25-May 9
Moon Apr 25-May 6
May 9
BasilFrost Mar 28-Apr 11
Moon Apr 8-11
Frost May 23-Jun 6
Moon May 23
Frost May 23-Jun 6
Moon May 23
Aug 27
BeetsN/AFrost Apr 25-May 9
Moon Apr 25-May 6
Frost Apr 11-18
May 23
Bell PeppersFrost Feb 28-Mar 14
Frost May 23-30
Moon May 23
N/AJul 16
Bok ChoyFrost Mar 28-Apr 11
Moon Apr 8-11
Frost May 23-30
Moon May 23
Frost May 23-30
Moon May 23
Jun 20
BroccoliFrost Mar 14-28
Moon Mar 14-25
Frost Apr 25-May 9
Moon May 7-9
Frost Apr 11-18
Moon Apr 11-18
Aug 6
Brussels SproutsFrost Mar 28-Apr 11
Moon Apr 8-11
Frost Apr 25-May 9
Moon May 7-9
Frost Apr 11-18
Moon Apr 11-18
Jul 2
CabbageFrost Mar 14-28
Moon Mar 14-25
Frost Apr 25-May 9
Moon May 7-9
Frost Apr 11-18
Moon Apr 11-18
Jun 25
CantaloupesFrost Apr 18-May 2
Moon Apr 18-23
Frost May 9-23
Moon May 9-23
Frost May 16-23
Moon May 16-23
Jul 2
CarrotsN/AN/AFrost Apr 11-25
Moon Apr 24-25
Jul 30
CauliflowerFrost Mar 28-Apr 11
Moon Apr 8-11
Frost May 2-16
Moon May 7-16
N/AJul 30
CeleryFrost Feb 14-28
Moon Feb 14-24
Frost May 16-30
Moon May 16-23
Frost May 9
Moon May 9
Jul 30
ChivesFrost Mar 14-28
Moon Mar 14-25
Frost Apr 18-25
Moon Apr 18-23
Frost Apr 18-25
Moon Apr 18-23
Aug 13
Cilantro (Coriander)N/AN/AFrost May 9-23
Moon May 9-23
May 30
CollardsFrost Mar 28-Apr 11
Moon Apr 8-11
Frost Apr 25-May 9
Moon May 7-9
Frost Apr 18-25
Moon Apr 18-23
Jul 30
CucumbersFrost Apr 18-25
Moon Apr 18-23
Frost May 16-30
Moon May 16-23
Frost May 23-30
Moon May 23
Jul 30
DillN/AN/AFrost May 2-23
Moon May 7-23
Aug 13
Dry BeansN/AN/AFrost May 23-30
Moon May 23
Jul 2
EggplantsFrost Mar 14-28
Moon Mar 14-25
Frost May 23-30
Moon May 23
N/AJul 30
Fava BeansN/AN/AFrost Apr 11-18
Moon Apr 11-18
May 23
FennelFrost Mar 28-Apr 11
Moon Apr 8-11
Frost May 16-23
Moon May 16-23
Frost May 9-23
Moon May 9-23
Jul 23
GarlicN/AN/AN/A
Green BeansN/AN/AFrost May 16-Jun 6
Moon May 16-23, Jun 6
Jul 30
Honeydew MelonsFrost Apr 18-25
Moon Apr 18-23
Frost May 23-30
Moon May 23
Frost May 23-30
Moon May 23
Jul 9
Jalapeño PeppersFrost Feb 28-Mar 14
Frost May 23-30
Moon May 23
N/A
KaleFrost Mar 14-28
Moon Mar 14-25
Frost Apr 25-May 9
Moon May 7-9
Frost Apr 11-18
Moon Apr 11-18
May 23
KohlrabiFrost Mar 28-Apr 11
Moon Apr 8-11
Frost Apr 18-25
Moon Apr 18-23
Frost Apr 11-18
Moon Apr 11-18
May 23
LeeksFrost Feb 28-Mar 14
Frost Apr 18-May 2
Moon Apr 18-23
N/AJun 25
LettuceFrost Mar 28-Apr 11
Moon Apr 8-11
Frost Apr 18-25
Moon Apr 18-23
Frost Apr 11-18
Moon Apr 11-18
May 23
Mustard GreensN/AN/AN/A
OkraFrost Apr 11-25
Moon Apr 11-23
Frost May 23-30
Moon May 23
Frost May 23-Jun 6
Moon May 23
Jul 30
OnionsN/AFrost Apr 11-25
Moon Apr 24-25
N/AJul 2
OreganoFrost Feb 28-Mar 28
Moon Mar 15-25
Frost May 16-30
Moon May 16-23
N/AJul 30
ParsleyFrost Feb 28-Mar 14
Frost May 16-30
Moon May 16-23
Frost Apr 11-May 16
Moon Apr 11-23, May 7-16
Jul 23
ParsnipsN/AN/AFrost Apr 11-18
Jul 2
PeanutsN/AN/AFrost May 30-Jun 13
Moon May 30-Jun 5
PeasN/AN/AFrost Apr 11-18
Moon Apr 11-18
May 23
PotatoesN/AN/AFrost Apr 11-25
Moon Apr 24-25
Jul 30
PumpkinsFrost Apr 18-May 2
Moon Apr 18-23
Frost May 23-30
Moon May 23
Frost May 23-30
Moon May 23
Jun 25
RadishesN/AN/AFrost Apr 11-18
Aug 13
RosemaryFrost Feb 14-28
Moon Feb 14-24
Frost May 23-30
Moon May 23
N/AAug 13
SageFrost Mar 14-28
Moon Mar 14-25
Frost May 16-30
Moon May 16-23
N/AJul 23
SalsifyN/AN/AFrost Apr 11-25
Moon Apr 24-25
Jul 2
SpinachFrost Mar 28-Apr 11
Moon Apr 8-11
Frost Apr 18-25
Moon Apr 18-23
Frost Apr 11-18
Moon Apr 11-18
May 23
Sweet CornN/AN/AFrost May 23-Jun 6
Moon May 23
Jul 23
Sweet PotatoesN/AN/AFrost May 23-Jun 6
Moon May 24-Jun 5
Jun 25
Swiss ChardFrost Mar 28-Apr 11
Moon Apr 8-11
Frost Apr 25-May 9
Moon May 7-9
Frost Apr 18-May 9
Moon Apr 18-23, May 7-9
May 23
ThymeFrost Feb 28-Mar 14
Frost May 16-23
Moon May 16-23
N/AJul 16
TomatillosFrost Mar 28-Apr 11
Moon Apr 8-11
Frost May 23-Jun 6
Moon May 23
N/AJul 23
TomatoesFrost Mar 14-28
Moon Mar 14-25
Frost May 23-30
Moon May 23
N/AJul 9
TurnipsN/AN/AFrost Apr 11-18
Sep 10
WatermelonsFrost Apr 18-May 2
Moon Apr 18-23
Frost May 23-30
Moon May 23
Frost May 16-23
Moon May 16-23
Jul 9
Winter SquashFrost Apr 18-25
Moon Apr 18-23
Frost May 16-30
Moon May 16-23
Frost May 23-30
Moon May 23
Jun 18
Zucchini (Summer Squash)Frost Apr 18-25
Moon Apr 18-23
Frost May 16-30
Moon May 16-23
Frost May 23-30
Moon May 23
Aug 6

Planting Dates for Fall

On average, your first fall frost occurs on October 8 (at HALES CORNERS/WHITNALL PARK/BO, WI climate station).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds OutdoorsTransplantAverage Days to MaturityFrost Tolerance
ArugulaFrost Aug 20-Sep 24
Moon Sep 2-17
N/A40Frost-hardy
BeetsFrost Jul 16-Aug 13
Moon Jul 22-Aug 3
N/A50Frost-tolerant
Bok ChoyFrost Jul 30-Aug 20
Moon Aug 4-19
N/A50Frost-tolerant
BroccoliFrost Jul 9-16
Moon Jul 9-16
Frost Jul 30-Aug 13
Moon Aug 4-13
60Frost-tolerant
Brussels SproutsFrost Jun 18-Jul 2
Moon Jun 18-21
N/A100Frost-hardy
CabbageFrost Jul 9-16
Moon Jul 9-16
Frost Jul 30-Aug 6
Moon Aug 4-6
90Frost-tolerant
CarrotsFrost Jul 23-30
Moon Jul 23-30
N/A70Frost-tolerant
CauliflowerFrost Jul 2-9
Moon Jul 5-9
Frost Jul 16-23
Moon Jul 16-21
75Frost-tolerant
ChivesFrost Jul 16-Aug 13
Moon Jul 16-21, Aug 4-13
N/A70Frost-tolerant
FennelFrost Jul 9-23
Moon Jul 9-21
N/A80Tender
GarlicFrost Oct 22-Nov 4
Moon Oct 22-31
N/A120Frost-hardy
Green BeansFrost Jul 23-Aug 6
Moon Aug 4-6
N/A55Tender
KaleFrost Jul 30-Aug 13
Moon Aug 4-13
N/A60Frost-hardy
KohlrabiFrost Aug 6-27
Moon Aug 6-19
N/A45Frost-tolerant
LettuceFrost Jul 30-Aug 13
Moon Aug 4-13
N/A60Frost-tolerant
Mustard GreensFrost Aug 6-27
Moon Aug 6-19
N/A45Tender
PeasFrost Jul 30-Aug 13
Moon Aug 4-13
N/A55Tender
RadishesFrost Aug 27-Sep 10
Moon Aug 27-Sep 1
N/A25Frost-tolerant
SpinachFrost Aug 20-Sep 10
Moon Sep 2-10
N/A30Frost-hardy
Swiss ChardFrost Jul 30-Aug 13
Moon Aug 4-13
N/A60Frost-tolerant
TurnipsFrost Aug 6-20
Moon Aug 20
N/A50Frost-tolerant
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