When to Plant Cabbage in Oregon (2026 Guide)
Planting cabbage in Oregon requires careful attention to the state's unique climate conditions and frost dates. Regions in Oregon span various USDA hardiness zones, each with its last and first frost dates that dictate the planting schedule. For those in Zone 6b, the median last spring frost date is April 11, while those in cooler regions like Zone 6a should note a later last frost of April 22.
The timing of planting cabbage is crucial for a successful harvest. Cabbage thrives in cool temperatures between 45 and 75°F, which makes early spring and late summer the ideal planting seasons. Understanding the growing season is particularly important in Oregon, as the state experiences distinct weather patterns, from coastal fog to unseasonably warm weather.
For gardeners in Oregon, spring cabbage can be planted as early as late winter indoors for transplanting after the last frost. Meanwhile, for a robust fall crop, late spring or early summer sowing is recommended. Be sure to consider your local city climate, as Portland, Salem, and Eugene each have their unique microclimates affecting cabbage growth and harvest timing.
Planting Schedule by USDA Zone in Oregon
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 6b | Start February 15 – March 1, ~6–8 weeks before April 11 | Transplant outdoors from April 12 – April 30 | Direct sow from April 15 – May 15 | Harvest from July 15 – October 15 |
| Zone 6a | Start March 1 – March 15, ~6–8 weeks before April 22 | Transplant outdoors from April 23 – May 5 | Direct sow from April 25 – May 20 | Harvest from August 1 – October 1 |
| Zone 7a | Start February 15 – March 1, ~6 weeks before March 23 | Transplant outdoors from March 24 – April 10 | Direct sow from April 1 – May 1 | Harvest from June 15 – November 1 |
Cabbage Planting Windows in Oregon
- Indoor start: Start indoors between February 15 and March 1 for all zones.
- Transplant outdoors: Transplant outdoors based on your zone: April 12 to April 30 for Zone 6b, April 23 to May 5 for Zone 6a, and March 24 to April 10 for Zone 7a.
- Harvest: Harvest cabbage between July 15 and November 1, depending on your planting schedule and zone.
Common Mistakes Growing Cabbage in Oregon
- Many first-time gardeners in Oregon plant too late, missing the window before the last frost. Make sure to check specific frost dates for your temperature zone, as missing this can hinder your cabbage success.
- In Oregon, planting cabbage too early can expose seedlings to late spring snowfall, which is a common mistake. Protect your plants or wait until the danger of frost has passed to ensure they grow strong.
- Overwatering is a serious concern in certain Oregon areas, particularly during rainy seasons. Cabbage prefers well-drained soil, so ensure adequate drainage to avoid root rot and other issues.
- Failing to consider local pests is a common error for Oregon gardeners. Slugs often thrive in Oregon's humid climate, so be proactive with barriers like copper tape or beer traps to protect your seedlings.
- Many gardeners forget to rotate their cabbage crops each year, which can lead to increased disease risks, particularly clubroot, in Oregon soils. Implement a careful rotation plan to keep your crops healthy.
Frequently Asked Questions
What if I'm in a cold pocket of Oregon?
If you’re in a colder microclimate, consider starting seeds indoors sooner or using season extenders like row covers. This can help protect your plants from frost and cold temperatures, ensuring they thrive.
Can I still plant cabbage in May?
Yes, but your planting should transition to fall crops in May to ensure sufficient growing time before the first frost. Late sowing may result in smaller heads, so choose fast-maturing varieties.
What should I do about slug problems?
Slugs can be a major issue in Oregon. Use barriers like copper tape or bait traps with beer to effectively reduce slug populations around your cabbage plants. Regular monitoring can prevent significant damage.
How much space should I allow between cabbages?
This depends on the variety, but generally, aim for 12 to 18 inches between plants. This space allows for adequate air circulation, minimizing disease risks, particularly in Oregon's humid conditions.
When should I harvest my cabbage?
Harvest cabbage when heads are firm and adequately sized; typically between 60 and 120 days after planting, depending on the variety. Keeping an eye on moisture levels can also ensure optimal head condition.
Keep Learning
City guides in Oregon
Other crops in Oregon
Typical fall sowing window for Cabbage in Oregon: August 6 – August 27.