When to start seeds indoors in Oregon

If winter is the time to plan a garden and order seeds, early spring is the time to start wondering: When to plant? This table can help you figure out when to start your seeds indoors and when to set them out in your garden.

Follow these steps:

  1. Write the average frost-free date in column 1. Most gardeners in central Oregon use May 31, but use the date most applicable to your area.
  2. Count back (or ahead) using the numbers in column 2 to determine the outdoor planting date. Write that number in column 3.
  3. Count back from that date using the numbers in column 4 to determine the indoor sowing date.

Beans and lettuce are listed below as examples.

Crop Frost-free date Weeks to set out Set-out date Weeks to grow indoors Sow date
Beans 05/31 +1 06/07 -4 05/10
Broccoli   -4   -6  
Brussels sprouts   -4   -6  
Cabbage   -5   -6  
Cauliflower   -2   -6  
Corn   0   -4  
Cucumbers   +1   -3  
Kale   -5   -6  
Leeks   -5   -10  
Lettuce 05/31 -2 05/17 -5 04/12
Melons   +2   -3  
Onions   -6   -10  
Peas   -4   -4  
Peppers   +2   -8  
Squash   +2   -3  
Tomatoes   0   -8  
Previously titled
Seed starting schedule

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