When to plant Brussels sprouts in Ashland and Talent, OR

Start Brussels sprouts from seed indoors Feb 11–25, then plant the young plants in the garden in Ashland and Talent Apr 8 – May 20.

Moderate Plant young plants (starts)

Why these dates

Ashland and Talent's typical last spring frost is May 6. As a cool-season crop that handles light frost, this crop can go in about 4 weeks before that.

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: Moderate
Sun: Full sun
Spacing: 24 inches apart
Planting depth: Plant starts at the depth they grew in the pot
Frost: Handles light frost
First harvest: About 100 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 Apr 8 – May 20, 24 inches apart. Plant starts at the depth they grew in the pot.
Water deeply once or twice a week rather than a little every day, and mulch once the soil is warm.
Harvest: Pick sprouts from the bottom of the stalk up once they're firm and about an inch across. Frost improves the flavor.

Varieties that do well here

Long Island Improved
Diablo
Churchill

Watch out for

Aphids cluster on the sprouts in late summer. Knock them off with a strong spray of water every few days.

A long-season crop picked in fall and winter, when frost sweetens the sprouts. West of the Cascades, plants keep producing well into winter.

Common questions

When is the last frost in Ashland and Talent, OR?

Typically May 6. In 9 years out of 10, frost is over by May 27. These are 1991–2020 NOAA climate normals for Ashland.

Is it too late to plant Brussels sprouts in Ashland and Talent?

The spring planting window runs through May 20. Later plantings tend to struggle in summer heat.

When should I start Brussels sprouts from seed indoors in Ashland and Talent?

February 11 to February 25, which is 8 to 6 weeks before the April 8 planting date. Or buy young plants at a garden center instead.

Also plant in Ashland and Talent around the same time

Planting dates for Brussels sprouts in nearby areas

Roseburg, OR Mar 15 – Apr 26
Medford, OR Mar 15 – Apr 26
Grants Pass, OR Mar 15 – Apr 26
Portland, OR Mar 15 – Apr 26
Gresham, OR Mar 15 – Apr 26
Wilsonville and Canby, OR Mar 15 – Apr 26

Full planting calendar for Ashland and Talent · Brussels sprouts in every city