When to plant arugula in Coos Bay and North Bend, OR

Plant arugula from seed, directly in the garden in Coos Bay and North Bend, Mar 25 – May 6. For a fall harvest, plant again Aug 27 – Sep 17.

Easy Plant seeds in the ground

Why these dates

Coos Bay and North Bend's typical last spring frost is February 21. On the coast, the soil is usually ready for arugula around 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.

Prepare the bed: loosen the soil and mix in an inch or two of compost.
Plant seeds Mar 25 – May 6, ¼ inch deep, Thin to 4 inches apart.
Keep the soil evenly moist until sprouts appear, which can take one to three weeks in cool soil.
Plant again Aug 27 – Sep 17 for a fall harvest.
Harvest: Pick leaves when they're 2 to 3 inches long, about three weeks after sowing. Young leaves are the mildest.

Flea beetles riddle the leaves with tiny holes in spring. Floating row cover laid on at sowing keeps them off.

Fast and frost-tolerant. It bolts in heat, so sow small batches in spring and again in late summer.

When is the last frost in Coos Bay and North Bend, OR?

Typically February 21. In 9 years out of 10, frost is over by March 25. These are 1991–2020 NOAA climate normals for North Bend Regional Airport.

Is it too late to plant arugula in Coos Bay and North Bend?

The spring planting window runs through May 6. If you miss it, plant again for fall from August 27 to September 17.

How long until I can harvest arugula?

About 35 days after planting. Pick leaves when they're 2 to 3 inches long, about three weeks after sowing. Young leaves are the mildest.