When to plant potatoes in Astoria, OR

Plant seed potatoes in Astoria Apr 1 – May 13.

Easy Plant seed potatoes

Why these dates

Astoria's typical last spring frost is March 26. On the coast, the soil is usually ready for potatoes around April 1.

Coast. Mild winters but cool, foggy summers. Frost is rarely the problem; warmth is. Pick early, cool-tolerant varieties of tomatoes and squash.

Prepare the bed: loosen the soil and mix in an inch or two of compost.
Plant seed potatoes Apr 1 – May 13, 4 inches deep in a trench, 12 inches apart in rows 30 inches apart. Cut large ones into pieces with at least two eyes each.
As plants grow, pile soil or straw around the stems so the potatoes stay covered.
Harvest: Dig new potatoes when the plants flower. For storage potatoes, wait two weeks after the tops die back.

Wireworms in beds that were recently lawn. Grow potatoes in an established bed if you can.

Use certified seed potatoes. Hill soil around stems as they grow.

When is the last frost in Astoria, OR?

Typically March 26. In 9 years out of 10, frost is over by April 18. These are 1991–2020 NOAA climate normals for Astoria Regional Airport.

Is it too late to plant potatoes in Astoria?

The spring planting window runs through May 13. Later plantings tend to struggle in summer heat.

How long until I can harvest potatoes?

About 95 days after planting. Dig new potatoes when the plants flower. For storage potatoes, wait two weeks after the tops die back.