When to plant lettuce in Astoria, OR

Plant lettuce in the garden in Astoria Mar 25 – May 20, either as seeds or as young plants started indoors Feb 11–25. For a fall harvest, plant again Aug 20 – Sep 3.

Easy Plant seeds or young plants

Why these dates

Astoria's typical last spring frost is March 26. As a cool-season crop that handles light frost, this crop doesn't need to wait for that date. On the coast, though, the soil usually isn't ready to work until about March 25.

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

Difficulty: Easy
Sun: Full sun in spring; afternoon shade in summer
Spacing: 8 to 10 inches apart for heads
Planting depth: ¼ inch deep (it needs light to sprout)
Frost: Handles light frost
First harvest: About 50 days after planting

Step by step

Start seeds indoors Feb 11–25 in trays or small pots under a grow light or in your sunniest window. Or skip this step and buy young plants (starts) at a garden center.
Harden off the young plants: about a week before planting, set them outside for a few hours a day, a little longer each day.
Plant them in the garden Mar 25 – May 20, 8 to 10 inches apart for heads. If you plant seeds instead, sow them ¼ inch deep (it needs light to sprout).
Water deeply once or twice a week rather than a little every day, and mulch once the soil is warm.
Plant again Aug 20 – Sep 3 for a fall harvest.
Harvest: Pick outer leaves as needed, or cut whole heads when full. Harvest in the morning for the crispest leaves.

Varieties that do well here

Buttercrunch
Black Seeded Simpson
Winter Density

Watch out for

Slugs are the Northwest lettuce pest. Iron phosphate slug bait is safe around pets and edible crops.

Tolerates light frost. Sow every two to three weeks; choose heat-tolerant types for later sowings.

Common questions

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 lettuce in Astoria?

The spring planting window runs through May 20. If you miss it, plant again for fall from August 20 to September 3.

When should I start lettuce from seed indoors in Astoria?

February 11 to February 25, which is 6 to 4 weeks before the March 25 planting date. Or buy young plants at a garden center instead.

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Raised Beds for Rainy Northwest GardensWhy raised beds suit the Northwest so well, how big and deep to build them, what to fill them with, and the mistakes to avoid.
Growing Vegetables in Containers on a Northwest Balcony or PatioNo yard? Herbs, greens, tomatoes and more grow well in pots. Container sizes, soil, watering and the best crops for small Northwest spaces.
Fall and Winter Vegetable Gardening West of the CascadesHow to keep harvesting kale, carrots, garlic and greens through a mild Northwest winter, and when to plant for it.
Gardening in Bend and Central Oregon's Short SeasonHow to grow vegetables where frost can come almost any month: what to plant, when, and how to protect it.
How to Control Slugs in a Northwest GardenPractical, pet-safe ways to protect seedlings, lettuce and strawberries from the Pacific Northwest's most famous garden pest.

Also plant in Astoria around the same time

Planting dates for lettuce in nearby areas

Coos Bay and North Bend, OR Mar 25 – May 20
Aberdeen and Hoquiam, WA Mar 25 – May 20
Forks, WA Mar 25 – May 20

Full planting calendar for Astoria · Lettuce in every city