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Planting Calendar for Grand Forks, BC

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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 Fall

On average, your first fall frost occurs on September 15 (at GRAND FORKS, BC climate station).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds OutdoorsTransplantAverage Days to MaturityFrost Tolerance
ArugulaFrost Jul 28-Sep 1
Moon Jul 28-Aug 9, Aug 23-Sep 1
N/A40Frost-hardy
BeetsFrost Jun 23-Jul 21
Moon Jun 23-24, Jul 11-21
N/A50Frost-tolerant
Bok ChoyFrost Jul 7-28
Moon Jul 7-10, Jul 24-28
N/A50Frost-tolerant
BroccoliFrost Jun 16-23
Frost Jul 7-21
Moon Jul 7-10
60Frost-tolerant
Brussels SproutsFrost May 26-Jun 9
Moon May 26-Jun 9
N/A100Frost-hardy
CabbageFrost Jun 16-23
Frost Jul 7-14
Moon Jul 7-10
90Frost-tolerant
CarrotsFrost Jun 30-Jul 7
N/A70Frost-tolerant
CauliflowerFrost Jun 9-16
Moon Jun 9-11
Frost Jun 23-30
Moon Jun 25-30
75Frost-tolerant
ChivesFrost Jun 23-Jul 21
Moon Jun 25-Jul 10
N/A70Frost-tolerant
FennelFrost Jun 16-30
Moon Jun 25-30
N/A80Tender
GarlicFrost Sep 29-Oct 13
Moon Oct 7-13
N/A120Frost-hardy
Green BeansFrost Jun 30-Jul 14
Moon Jun 30-Jul 10
N/A55Tender
KaleFrost Jul 7-21
Moon Jul 7-10
N/A60Frost-hardy
KohlrabiFrost Jul 14-Aug 4
Moon Jul 24-Aug 4
N/A45Frost-tolerant
LettuceFrost Jul 7-21
Moon Jul 7-10
N/A60Frost-tolerant
Mustard GreensFrost Jul 14-Aug 4
Moon Jul 24-Aug 4
N/A45Tender
PeasFrost Jul 7-21
Moon Jul 7-10
N/A55Tender
RadishesFrost Aug 4-18
Moon Aug 10-18
N/A25Frost-tolerant
SpinachFrost Jul 28-Aug 18
Moon Jul 28-Aug 9
N/A30Frost-hardy
Swiss ChardFrost Jul 7-21
Moon Jul 7-10
N/A60Frost-tolerant
TurnipsFrost Jul 14-28
Moon Jul 14-23
N/A50Frost-tolerant

Planting Dates for Spring

On average, your last spring frost occurs on May 17 (at GRAND FORKS, BC climate station, elevation 1742 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 22-Apr 5
Moon Mar 29-Apr 5
Frost Apr 26-May 10
Moon Apr 27-May 10
Frost Apr 19-26
Aug 18
AsparagusN/AN/AFrost May 3-17
Moon May 13-17
May 17
BasilFrost Apr 5-19
Moon Apr 5-12
Frost May 31-Jun 14
Moon May 31-Jun 11
Frost May 31-Jun 14
Moon May 31-Jun 11
Aug 4
BeetsN/AFrost May 3-17
Moon May 13-17
Frost Apr 19-26
Moon Apr 19-26
May 31
Bell PeppersFrost Mar 7-22
Moon Mar 7-14
Frost May 31-Jun 7
Moon May 31-Jun 7
N/AJun 23
Bok ChoyFrost Apr 5-19
Moon Apr 5-12
Frost May 31-Jun 7
Moon May 31-Jun 7
Frost May 31-Jun 7
Moon May 31-Jun 7
Jun 28
BroccoliFrost Mar 22-Apr 5
Moon Mar 29-Apr 5
Frost May 3-17
Moon May 3-12
Frost Apr 19-26
Jul 14
Brussels SproutsFrost Apr 5-19
Moon Apr 5-12
Frost May 3-17
Moon May 3-12
Frost Apr 19-26
Jun 9
CabbageFrost Mar 22-Apr 5
Moon Mar 29-Apr 5
Frost May 3-17
Moon May 3-12
Frost Apr 19-26
May 24
CantaloupesFrost Apr 26-May 10
Moon Apr 27-May 10
Frost May 17-31
Moon May 26-31
Frost May 24-31
Moon May 26-31
Jun 9
CarrotsN/AN/AFrost Apr 19-May 3
Moon Apr 19-26
Jul 7
CauliflowerFrost Apr 5-19
Moon Apr 5-12
Frost May 10-24
Moon May 10-12
N/AJun 30
CeleryFrost Feb 21-Mar 7
Moon Feb 27-Mar 7
Frost May 24-Jun 7
Moon May 26-Jun 7
Frost May 17
Jul 7
ChivesFrost Mar 22-Apr 5
Moon Mar 29-Apr 5
Frost Apr 26-May 3
Moon Apr 27-May 3
Frost Apr 26-May 3
Moon Apr 27-May 3
Jul 21
Cilantro (Coriander)N/AN/AFrost May 17-31
Moon May 26-31
Jun 7
CollardsFrost Apr 5-19
Moon Apr 5-12
Frost May 3-17
Moon May 3-12
Frost Apr 26-May 3
Moon Apr 27-May 3
Jul 7
CucumbersFrost Apr 26-May 3
Moon Apr 27-May 3
Frost May 24-Jun 7
Moon May 26-Jun 7
Frost May 31-Jun 7
Moon May 31-Jun 7
Jul 7
DillN/AN/AFrost May 10-31
Moon May 10-12, May 26-31
Jul 21
Dry BeansN/AN/AFrost May 31-Jun 7
Moon May 31-Jun 7
Jun 9
EggplantsFrost Mar 22-Apr 5
Moon Mar 29-Apr 5
Frost May 31-Jun 7
Moon May 31-Jun 7
N/AJul 7
Fava BeansN/AN/AFrost Apr 19-26
May 31
FennelFrost Apr 5-19
Moon Apr 5-12
Frost May 24-31
Moon May 26-31
Frost May 17-31
Moon May 26-31
Jun 30
GarlicN/AN/AN/A
Green BeansN/AN/AFrost May 24-Jun 14
Moon May 26-Jun 11
Jul 7
Honeydew MelonsFrost Apr 26-May 3
Moon Apr 27-May 3
Frost May 31-Jun 7
Moon May 31-Jun 7
Frost May 31-Jun 7
Moon May 31-Jun 7
Jun 16
Jalapeño PeppersFrost Mar 7-22
Moon Mar 7-14
Frost May 31-Jun 7
Moon May 31-Jun 7
N/A
KaleFrost Mar 22-Apr 5
Moon Mar 29-Apr 5
Frost May 3-17
Moon May 3-12
Frost Apr 19-26
May 31
KohlrabiFrost Apr 5-19
Moon Apr 5-12
Frost Apr 26-May 3
Moon Apr 27-May 3
Frost Apr 19-26
May 31
LeeksFrost Mar 7-22
Moon Mar 7-14
Frost Apr 26-May 10
Moon Apr 27-May 10
N/AJun 2
LettuceFrost Apr 5-19
Moon Apr 5-12
Frost Apr 26-May 3
Moon Apr 27-May 3
Frost Apr 19-26
May 31
MicrogreensN/AN/AN/A
Mustard GreensN/AN/AN/A
OkraFrost Apr 19-May 3
Moon Apr 27-May 3
Frost May 31-Jun 7
Moon May 31-Jun 7
Frost May 31-Jun 14
Moon May 31-Jun 11
Jul 7
OnionsN/AFrost Apr 19-May 3
Moon Apr 19-26
N/AJun 9
OreganoFrost Mar 7-Apr 5
Moon Mar 7-14, Mar 29-Apr 5
Frost May 24-Jun 7
Moon May 26-Jun 7
N/AJul 7
ParsleyFrost Mar 7-22
Moon Mar 7-14
Frost May 24-Jun 7
Moon May 26-Jun 7
Frost Apr 19-May 24
Moon Apr 27-May 12
Jun 30
ParsnipsN/AN/AFrost Apr 19-26
Moon Apr 19-26
Jun 9
PeanutsN/AN/AFrost Jun 7-21
Moon Jun 12-21
PeasN/AN/AFrost Apr 19-26
May 31
PotatoesN/AN/AFrost Apr 19-May 3
Moon Apr 19-26
Jul 7
PumpkinsFrost Apr 26-May 10
Moon Apr 27-May 10
Frost May 31-Jun 7
Moon May 31-Jun 7
Frost May 31-Jun 7
Moon May 31-Jun 7
Jun 2
RadishesN/AN/AFrost Apr 19-26
Moon Apr 19-26
Jul 21
RosemaryFrost Feb 21-Mar 7
Moon Feb 27-Mar 7
Frost May 31-Jun 7
Moon May 31-Jun 7
N/AJul 21
SageFrost Mar 22-Apr 5
Moon Mar 29-Apr 5
Frost May 24-Jun 7
Moon May 26-Jun 7
N/AJun 30
SalsifyN/AN/AFrost Apr 19-May 3
Moon Apr 19-26
Jun 9
SpinachFrost Apr 5-19
Moon Apr 5-12
Frost Apr 26-May 3
Moon Apr 27-May 3
Frost Apr 19-26
May 31
Sweet CornN/AN/AFrost May 31-Jun 14
Moon May 31-Jun 11
Jun 30
Sweet PotatoesN/AN/AFrost May 31-Jun 14
Moon Jun 12-14
Jun 2
Swiss ChardFrost Apr 5-19
Moon Apr 5-12
Frost May 3-17
Moon May 3-12
Frost Apr 26-May 17
Moon Apr 27-May 12
May 31
ThymeFrost Mar 7-22
Moon Mar 7-14
Frost May 24-31
Moon May 26-31
N/AJun 23
TomatillosFrost Apr 5-19
Moon Apr 5-12
Frost May 31-Jun 14
Moon May 31-Jun 11
N/AJun 30
TomatoesFrost Mar 22-Apr 5
Moon Mar 29-Apr 5
Frost May 31-Jun 7
Moon May 31-Jun 7
N/AJun 16
TurnipsN/AN/AFrost Apr 19-26
Moon Apr 19-26
Aug 18
WatermelonsFrost Apr 26-May 10
Moon Apr 27-May 10
Frost May 31-Jun 7
Moon May 31-Jun 7
Frost May 24-31
Moon May 26-31
Jun 16
Winter SquashFrost Apr 26-May 3
Moon Apr 27-May 3
Frost May 24-Jun 7
Moon May 26-Jun 7
Frost May 31-Jun 7
Moon May 31-Jun 7
May 26
Zucchini (Summer Squash)Frost Apr 26-May 3
Moon Apr 27-May 3
Frost May 24-Jun 7
Moon May 26-Jun 7
Frost May 31-Jun 7
Moon May 31-Jun 7
Jul 14
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