When to plant sweet corn in Oregon and Washington

In Portland: Plant sweet corn from seed, directly in the garden, May 10 – Jun 14. In Bend: Jun 16 – Jul 21. Find your city below.

Plant in blocks of at least four short rows, not one long row, for good pollination.

Sweet corn planting dates by city

City	Plant in the garden
Astoria, OR	May 15 – Jun 19
Baker City, OR	Jun 1 – Jul 6
Bend and Redmond, OR	Jun 16 – Jul 21
Burns, OR	Jun 18 – Jul 23
Coos Bay and North Bend, OR	May 15 – Jun 19
Eugene, OR	May 10 – Jun 14
Gresham, OR	May 10 – Jun 14
Klamath Falls, OR	Jun 16 – Jul 21
Medford, OR	May 10 – Jun 14
Pendleton, OR	May 3 – Jun 7
Portland, OR	May 10 – Jun 14
Roseburg, OR	May 10 – Jun 14
Salem, OR	May 10 – Jun 14
The Dalles, OR	Apr 25 – May 30
Wilsonville and Canby, OR	May 10 – Jun 14
Aberdeen and Hoquiam, WA	May 15 – Jun 19
Bellingham, WA	May 10 – Jun 14
Ellensburg, WA	May 15 – Jun 19
Everett, WA	May 10 – Jun 14
Forks, WA	May 15 – Jun 19
Moses Lake, WA	May 4 – Jun 8
Olympia, WA	May 10 – Jun 14
Omak and Okanogan, WA	May 15 – Jun 19
Seattle and Tacoma, WA	May 10 – Jun 14
Spokane, WA	May 15 – Jun 19
Tri-Cities (Pasco, Kennewick, Richland), WA	May 4 – Jun 8
Vancouver, WA	May 10 – Jun 14
Walla Walla, WA	Apr 25 – May 30
Wenatchee, WA	Apr 25 – May 30
Yakima, WA	May 15 – Jun 19

Prepare the bed: loosen the soil and mix in an inch or two of compost.
Plant seeds on your city's dates, 1 inch deep, 10 inches apart in a block of short rows.
Keep the soil evenly moist until sprouts appear, which can take one to three weeks in cool soil.
Harvest: Ready about three weeks after the silks appear, when the silks are brown and the kernels squirt milky juice.

Crows pull up sprouting seeds. Cover the bed with netting or row cover until plants are 4 inches tall.