Planting Calendar for Portland, OR

On average, your last spring frost occurs on March 31 (at OREGON CITY, OR climate station).
Crop Based on Frost Dates   Based on Moon Dates
Start Seeds IndoorsPlant Seedlings
or Transplants
Start Seeds Outdoors
BeansN/AN/A Apr 7-28
Apr 7-19
BeetsN/AN/A Mar 17-Apr 7
Mar 21-Apr 4
Bell Peppers Jan 19-Feb 2
Jan 19-21
Apr 14-May 5
Apr 14-19, May 4- 5
N/A
Broccoli Feb 16-Mar 2
Feb 16-19
Mar 9-31
Mar 9-20
N/A
Brussels Sprouts Feb 16-Mar 2
Feb 16-19
Mar 2-24
Mar 6-20
N/A
Cabbage Feb 2-16
Feb 4-16
Mar 2-17
Mar 6-17
N/A
Cantaloupes Mar 2- 9
Mar 6- 9
Apr 14-May 5
Apr 14-19, May 4- 5
N/A
CarrotsN/AN/A Feb 23-Mar 9
Feb 23-Mar 5
Cauliflower Feb 16-Mar 2
Feb 16-19
Mar 2-17
Mar 6-17
N/A
Celery Jan 19-Feb 2
Jan 19-21
Apr 7-21
Apr 7-19
N/A
Collards Feb 16-Mar 2
Feb 16-19
Mar 2-24
Mar 6-20
N/A
CornN/AN/A Mar 31-Apr 14
Apr 5-14
Cucumbers Mar 2- 9
Mar 6- 9
Apr 14-May 5
Apr 14-19, May 4- 5
N/A
Eggplants Jan 19-Feb 2
Jan 19-21
Apr 14-May 5
Apr 14-19, May 4- 5
N/A
Lettuce Feb 16-Mar 2
Feb 16-19
Mar 17-Apr 14
Mar 17-20, Apr 5-14
N/A
KohlrabiN/AN/A Mar 2-24
Mar 6-20
Leeks Jan 19-Feb 2
Jan 19-21
Mar 2-24
Mar 6-20
N/A
OkraN/AN/A Apr 14-28
Apr 14-19
OnionsN/AN/A Mar 2-24
Mar 2- 5, Mar 21-24
ParsnipsN/AN/A Mar 9-31
Mar 21-31
PeasN/AN/A Feb 16-Mar 9
Feb 16-19, Mar 6- 9
PotatoesN/AN/A Mar 24-Apr 14
Mar 24-Apr 4
Pumpkins Mar 2-17
Mar 6-17
Apr 14-May 5
Apr 14-19, May 4- 5
N/A
RadishesN/AN/A Feb 2-23
Feb 2- 3, Feb 20-23
SpinachN/AN/A Feb 16-Mar 9
Feb 16-19, Mar 6- 9
Squash (Zucchini) Mar 2-17
Mar 6-17
Apr 14-May 5
Apr 14-19, May 4- 5
N/A
Sweet Potatoes Mar 2- 9
Mar 2- 5
Apr 14-May 5
Apr 20-May 3
N/A
Swiss Chard Feb 16-Mar 2
Feb 16-19
Mar 9-17
Mar 9-17
N/A
Tomatoes Feb 2-16
Feb 4-16
Apr 7-28
Apr 7-19
N/A
TurnipsN/AN/A Mar 2-24
Mar 2- 5, Mar 21-24
Watermelons Mar 2- 9
Mar 6- 9
Apr 14-May 5
Apr 14-19, May 4- 5
N/A

Find the best dates for planting vegetables and fruit in your garden! Our free planting calendar calculates the best time to start seeds indoors and outdoors, as well as when to plant young plants outside.

How to Use the Planting Calendar

Simply put, a planting calendar is a guide that tells you the best time to start planting your garden. Most planting calendars are based on frost dates, which dictate when you should start seeds and when it's safe to plant outdoors in your area. Our planting calendar is customized to your location in order to give you the most accurate information possible.

On the planting calendar below, please note:

  • The Frost Dates indicate the best planting dates based on your local average frost dates. Average frost dates are based on historical weather data and are the planting guideline used by most gardeners.
  • The Moon Dates indicate the best planting dates based on your local frost dates and Moon phases. Planting by the Moon is considered a more traditional technique.
  • The Plant Seedlings or Transplants dates indicate the best time to plant young plants outdoors. This includes plants grown from seed at home and plants bought from a nursery. Although frost dates are a good way to know approximately when to start gardening, always check a local forecast before planting outdoors!
  • When no dates appear in the chart, that starting method is not recommended for that particular plant. Some crops do best when started outdoors rather than indoors, while others prefer the opposite.
  • Click on the name of a plant to see our corresponding Growing Guide.

To plan your garden more accurately in the future, keep a record of your garden's conditions each year, including frost dates and seed-starting dates!