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Planting Calendar for Saint Helens, OR | Almanac.com
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Planting Calendar for Saint Helens, OR

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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-seasons 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 April 30 (at SAINT HELENS RFD, OR climate station, elevation 269 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 4-19
Frost Apr 9-23
Moon Apr 9-23
Frost Apr 2-9
Moon Apr 8-9
Oct 4
AsparagusN/AN/AFrost Apr 16-30
Moon Apr 24-30
Apr 30
BasilFrost Mar 19-Apr 2
Moon Mar 19-25
Frost May 14-28
Moon May 14-23
Frost May 14-28
Moon May 14-23
Sep 20
BeetsN/AFrost Apr 16-30
Moon Apr 24-30
Frost Apr 2-9
Moon Apr 2-7
May 14
Bell PeppersFrost Feb 19-Mar 4
Moon Feb 19-24
Frost May 14-21
Moon May 14-21
N/AAug 9
Bok ChoyFrost Mar 19-Apr 2
Moon Mar 19-25
Frost May 14-21
Moon May 14-21
Frost May 14-21
Moon May 14-21
Jun 11
BroccoliFrost Mar 4-19
Frost Apr 16-30
Moon Apr 16-23
Frost Apr 2-9
Moon Apr 8-9
Aug 30
Brussels SproutsFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Apr 16-30
Moon Apr 16-23
Frost Apr 2-9
Moon Apr 8-9
Jul 26
CabbageFrost Mar 4-19
Frost Apr 16-30
Moon Apr 16-23
Frost Apr 2-9
Moon Apr 8-9
Jul 19
CantaloupesFrost Apr 9-23
Moon Apr 9-23
Frost Apr 30-May 14
Moon May 7-14
Frost May 7-14
Moon May 7-14
Jul 26
CarrotsN/AN/AFrost Apr 2-16
Moon Apr 2-7
Aug 23
CauliflowerFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Apr 23-May 7
Moon Apr 23
N/AAug 23
CeleryFrost Feb 5-19
Moon Feb 9-19
Frost May 7-21
Moon May 7-21
Frost Apr 30
Aug 23
ChivesFrost Mar 4-19
Frost Apr 9-16
Moon Apr 9-16
Frost Apr 9-16
Moon Apr 9-16
Sep 6
Cilantro (Coriander)N/AN/AFrost Apr 30-May 14
Moon May 7-14
May 21
CollardsFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Apr 16-30
Moon Apr 16-23
Frost Apr 9-16
Moon Apr 9-16
Aug 23
CucumbersFrost Apr 9-16
Moon Apr 9-16
Frost May 7-21
Moon May 7-21
Frost May 14-21
Moon May 14-21
Aug 23
DillN/AN/AFrost Apr 23-May 14
Moon Apr 23, May 8-14
Sep 6
Dry BeansN/AN/AFrost May 14-21
Moon May 14-21
Jul 26
EggplantsFrost Mar 4-19
Frost May 14-21
Moon May 14-21
N/AAug 23
Fava BeansN/AN/AFrost Apr 2-9
Moon Apr 8-9
May 14
FennelFrost Mar 19-Apr 2
Moon Mar 19-25
Frost May 7-14
Moon May 7-14
Frost Apr 30-May 14
Moon May 7-14
Aug 16
GarlicN/AN/AN/A
Green BeansN/AN/AFrost May 7-28
Moon May 7-23
Aug 23
Honeydew MelonsFrost Apr 9-16
Moon Apr 9-16
Frost May 14-21
Moon May 14-21
Frost May 14-21
Moon May 14-21
Aug 2
Jalapeño PeppersFrost Feb 19-Mar 4
Moon Feb 19-24
Frost May 14-21
Moon May 14-21
N/A
KaleFrost Mar 4-19
Frost Apr 16-30
Moon Apr 16-23
Frost Apr 2-9
Moon Apr 8-9
May 14
KohlrabiFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Apr 9-16
Moon Apr 9-16
Frost Apr 2-9
Moon Apr 8-9
May 14
LeeksFrost Feb 19-Mar 4
Moon Feb 19-24
Frost Apr 9-23
Moon Apr 9-23
N/AJul 19
LettuceFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Apr 9-16
Moon Apr 9-16
Frost Apr 2-9
Moon Apr 8-9
May 14
Mustard GreensN/AN/AN/A
OkraFrost Apr 2-16
Moon Apr 8-16
Frost May 14-21
Moon May 14-21
Frost May 14-28
Moon May 14-23
Aug 23
OnionsN/AFrost Apr 2-16
Moon Apr 2-7
N/AJul 26
OreganoFrost Feb 19-Mar 19
Moon Feb 19-24
Frost May 7-21
Moon May 7-21
N/AAug 23
ParsleyFrost Feb 19-Mar 4
Moon Feb 19-24
Frost May 7-21
Moon May 7-21
Frost Apr 2-May 7
Moon Apr 8-23
Aug 16
ParsnipsN/AN/AFrost Apr 2-9
Moon Apr 2-7
Jul 26
PeasN/AN/AFrost Apr 2-9
Moon Apr 8-9
May 14
PotatoesN/AN/AFrost Apr 2-16
Moon Apr 2-7
Aug 23
PumpkinsFrost Apr 9-23
Moon Apr 9-23
Frost May 14-21
Moon May 14-21
Frost May 14-21
Moon May 14-21
Jul 19
RadishesN/AN/AFrost Apr 2-9
Moon Apr 2-7
Sep 6
RosemaryFrost Feb 5-19
Moon Feb 9-19
Frost May 14-21
Moon May 14-21
N/ASep 6
SageFrost Mar 4-19
Frost May 7-21
Moon May 7-21
N/AAug 16
SalsifyN/AN/AFrost Apr 2-16
Moon Apr 2-7
Jul 26
SpinachFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Apr 9-16
Moon Apr 9-16
Frost Apr 2-9
Moon Apr 8-9
May 14
Sweet CornN/AN/AFrost May 14-28
Moon May 14-23
Aug 16
Sweet PotatoesN/AN/AFrost May 14-28
Moon May 24-28
Jul 19
Swiss ChardFrost Mar 19-Apr 2
Moon Mar 19-25
Frost Apr 16-30
Moon Apr 16-23
Frost Apr 9-30
Moon Apr 9-23
May 14
ThymeFrost Feb 19-Mar 4
Moon Feb 19-24
Frost May 7-14
Moon May 7-14
N/AAug 9
TomatillosFrost Mar 19-Apr 2
Moon Mar 19-25
Frost May 14-28
Moon May 14-23
N/AAug 16
TomatoesFrost Mar 4-19
Frost May 14-21
Moon May 14-21
N/AAug 2
TurnipsN/AN/AFrost Apr 2-9
Moon Apr 2-7
Oct 4
WatermelonsFrost Apr 9-23
Moon Apr 9-23
Frost May 14-21
Moon May 14-21
Frost May 7-14
Moon May 7-14
Aug 2
Winter SquashFrost Apr 9-16
Moon Apr 9-16
Frost May 7-21
Moon May 7-21
Frost May 14-21
Moon May 14-21
Jul 12
Zucchini (Summer Squash)Frost Apr 9-16
Moon Apr 9-16
Frost May 7-21
Moon May 7-21
Frost May 14-21
Moon May 14-21
Aug 30

Planting Dates for Fall

On average, your first fall frost occurs on November 1 (at SAINT HELENS RFD, OR climate station).
CropFrost Based on Frost Dates
Moon Based on Moon Dates
Start Seeds OutdoorsTransplantAverage Days to MaturityFrost Tolerance
ArugulaFrost Sep 13-Oct 18
Moon Sep 13-17, Oct 2-17
N/A40Frost-hardy
BeetsFrost Aug 9-Sep 6
Moon Aug 20-Sep 1
N/A50Frost-tolerant
Bok ChoyFrost Aug 23-Sep 13
Moon Sep 2-13
N/A50Frost-tolerant
BroccoliFrost Aug 2-9
Moon Aug 4-9
Frost Aug 23-Sep 6
Moon Sep 2-6
60Frost-tolerant
Brussels SproutsFrost Jul 12-26
Moon Jul 12-21
N/A100Frost-hardy
CabbageFrost Aug 2-9
Moon Aug 4-9
Frost Aug 23-30
90Frost-tolerant
CarrotsFrost Aug 16-23
Moon Aug 20-23
N/A70Frost-tolerant
CauliflowerFrost Jul 26-Aug 2
Frost Aug 9-16
Moon Aug 9-16
75Frost-tolerant
ChivesFrost Aug 9-Sep 6
Moon Aug 9-19, Sep 2-6
N/A70Frost-tolerant
FennelFrost Aug 2-16
Moon Aug 4-16
N/A80Tender
GarlicFrost Nov 14-28
Moon Nov 16-28
N/A120Frost-hardy
Green BeansFrost Aug 16-30
Moon Aug 16-19
N/A55Tender
KaleFrost Aug 23-Sep 6
Moon Sep 2-6
N/A60Frost-hardy
KohlrabiFrost Aug 30-Sep 20
Moon Sep 2-17
N/A45Frost-tolerant
LettuceFrost Aug 23-Sep 6
Moon Sep 2-6
N/A60Frost-tolerant
Mustard GreensFrost Aug 30-Sep 20
Moon Sep 2-17
N/A45Tender
PeasFrost Aug 23-Sep 6
Moon Sep 2-6
N/A55Tender
RadishesFrost Sep 20-Oct 4
Moon Sep 20-Oct 1
N/A25Frost-tolerant
SpinachFrost Sep 13-Oct 4
Moon Sep 13-17, Oct 2-4
N/A30Frost-hardy
Swiss ChardFrost Aug 23-Sep 6
Moon Sep 2-6
N/A60Frost-tolerant
TurnipsFrost Aug 30-Sep 13
Moon Aug 30-Sep 1
N/A50Frost-tolerant
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