Rainline Garden

When to plant parsley in Portland, OR

Plant parsley in the garden in Portland Mar 15 – May 3, either as seeds or as young plants started indoors Jan 18 – Feb 1.

Easy Plant seeds or young plants

Why these dates

Portland's typical last spring frost is March 13. In the west-side valleys, the soil is usually ready for parsley around March 15.

West-side valleys. The Willamette Valley, Puget Sound and southern Oregon valleys. Long frost-free seasons, but soil stays cold and wet into May, so warm crops wait for warm soil, not just the last frost.

Difficulty
Easy
Sun
Full sun to part shade
Spacing
8 inches apart
Planting depth
¼ inch deep
Frost
Handles light frost
First harvest
About 75 days after planting

Step by step

  1. Start seeds indoors Jan 18 – Feb 1 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.
  2. Harden off the young plants: about a week before planting, set them outside for a few hours a day, a little longer each day.
  3. Plant them in the garden Mar 15 – May 3, 8 inches apart. If you plant seeds instead, sow them ¼ inch deep.
  4. Water deeply once or twice a week rather than a little every day, and mulch once the soil is warm.
  5. Harvest: Cut outer stems at the base and let the center keep growing.

Varieties that do well here

  • Italian Flat Leaf
  • Moss Curled
  • Giant of Italy

Watch out for

Slow, patchy sprouting. Soak seeds overnight before sowing, or buy young plants.

Slow to sprout (up to three weeks), so many gardeners buy starts. Often keeps going through a mild Northwest winter.

Common questions

When is the last frost in Portland, OR?

Typically March 13. In 9 years out of 10, frost is over by April 1. These are 1991–2020 NOAA climate normals for Portland International Airport.

Is it too late to plant parsley in Portland?

The spring planting window runs through May 3. Later plantings tend to struggle in summer heat.

When should I start parsley from seed indoors in Portland?

January 18 to February 1, which is 8 to 6 weeks before the March 15 planting date. Or buy young plants at a garden center instead.

Also plant in Portland around the same time

Planting dates for parsley in nearby areas

Full planting calendar for Portland · Parsley in every city