When to plant thyme in Bremerton and Port Orchard, WA

Plant young thyme plants in Bremerton and Port Orchard Mar 15 – May 10.

Easy Plant young plants

Difficulty: Easy
Sun: Full sun
Spacing: 12 inches apart
Planting depth: Plant at the depth it grew in the nursery pot
Frost: Handles light frost
First harvest: Pick lightly the first year, freely after that

Why these dates

Bremerton and Port Orchard's typical last spring frost is March 29. As a cool-season crop that handles light frost, this crop doesn't need to wait for that date. In the west-side valleys, though, the soil usually isn't ready to work until about 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.

How to grow thyme in Bremerton and Port Orchard

Pick a sunny spot with soil that drains well, and mix in an inch or two of compost.
Plant young thyme plants Mar 15 – May 10, 12 inches apart. Plant at the depth it grew in the nursery pot.
Water only until established; thyme prefers dry soil. Replace plants every few years when they get woody.
Harvest: Snip sprigs before the plant flowers for the best flavor. Trim lightly after flowering to keep it compact.

Key numbers

6.0–8.0Soil pH
Only in long dry spellsWater
Every 3–5 yearsReplace plants
Wet winter soilBiggest risk

Growing notes

What makes the difference in Northwest gardens, in plain language.

Drainage beats everything

Thyme comes from dry, rocky Mediterranean hillsides. It handles cold well, but sitting in cold, wet soil all winter rots its roots, and that kills more thyme in western Oregon and Washington than frost ever does. Plant it in a raised bed, at the edge of a rock wall, on a slope or in a pot with gritty mix. Mixing some fine gravel into heavy soil helps.

Skip rich compost and fertilizer. Lean, dry soil keeps plants compact and makes the leaves more flavorful.

Harvesting and drying

Flavor is strongest just before the plant flowers in late spring, which is the best time for a big harvest. Cut the soft, leafy tips, never into old woody stems. Thyme is one of the herbs that dries really well: bundle stems loosely and hang them in a dry, shady spot for a week or two, then strip the leaves and store them in a jar.

Lemon thyme keeps its citrus scent best when used fresh or added at the end of cooking.

Pruning and winter

Trim plants lightly after flowering to keep them dense; unpruned thyme sprawls and turns woody in the middle. Even with good care, plants decline after a few years, so take cuttings or buy a new plant to replace tired ones.

English thyme is very cold hardy and does well on both sides of the Cascades. Lemon and French thyme are a bit more tender; in the coldest eastern areas, grow them in a pot that can move to a sheltered spot.

Common questions

When is the last frost in Bremerton and Port Orchard, WA?

Typically March 29. In 9 years out of 10, frost is over by April 24. These are 1991–2020 NOAA climate normals for Bremerton.

Is it too late to plant thyme in Bremerton and Port Orchard?

The spring planting window runs through May 10. Later plantings tend to struggle in summer heat.

How long until I can pick thyme?

Pick lightly the first year, freely after that. Snip sprigs before the plant flowers for the best flavor. Trim lightly after flowering to keep it compact.

Why is my thyme dying in the middle?

Thyme naturally gets woody in the center as it ages, especially if it isn't trimmed. Wet soil can also kill the center first. Trim lightly each year after flowering and replace old plants every few years.

Can I grow thyme from seed?

Yes, but the seed is tiny and the seedlings are slow, so most gardeners buy small plants or root cuttings instead. Plants grown from seed can also vary in flavor, while cuttings match the parent.

When should I prune thyme?

Lightly after it flowers in summer, removing spent flowers and a little leafy growth. Avoid heavy pruning in fall, and don't cut into old bare wood, which may not sprout again.

Also plant in Bremerton and Port Orchard around the same time

Planting dates for thyme in nearby areas

Seattle and Tacoma, WA Mar 15 – May 10
Everett, WA Mar 15 – May 10
Olympia, WA Apr 1 – May 27
Kent, Renton and Auburn, WA Mar 15 – May 10
Shelton, WA Mar 30 – May 25
Portland, OR Mar 15 – May 10

Full planting calendar for Bremerton and Port Orchard · Thyme in every city