🥬 Can I Plant Bok Choy in Portland, OR?
Temperature conditions are suitable for Bok Choy. Highs near 88°F are on the warm side — make sure plants have plenty of water. The season is running warmer than normal, which has opened this window earlier than usual.
Growing Bok Choy in Portland
Portland's Zone 8b Willamette Valley climate is excellent for many crops, but the famously cloudy, cool summers challenge heat-loving plants. Tomatoes, peppers, and melons need the warmest microclimate in your yard. Cool-season crops — kale, chard, lettuce, brassicas — are where Portland gardens truly shine, often producing well into December.
In Portland (last frost around March 25), bok choy can go out around February — approximately 4 weeks before the last expected frost, making it an early-season opportunity. Starting seeds indoors 6 weeks before the last frost date gives you a significant head start.
Bok Choy thrives between 45°F and 75°F. It tolerates temperatures as low as 25°F, making it a candidate for early spring planting before the last frost date. Expect 30–60 days from transplant to first harvest. Bolts quickly in heat. Best planted in early spring or fall.
Frequently Asked Questions
When can I plant bok choy in Portland, OR?
In Portland (last frost around March 25), bok choy can go out around February — approximately 4 weeks before the last expected frost, making it an early-season opportunity. For best results, start seeds indoors 6 weeks before that — giving you strong transplants ready to go out at the right time.
What is the USDA hardiness zone for Portland?
Portland, OR is in USDA Plant Hardiness Zone 8b. The last expected spring frost is around March 25, and the first fall frost arrives around November 15. This zone classification helps you understand which perennials survive winter and when annual vegetables can safely go outdoors.
Is it safe to plant bok choy outside in Portland right now?
That depends on the current weather forecast. Bok Choy needs temperatures above 25°F (ideally 45–75°F) to thrive. CanIPlant checks your real 7-day forecast and any active frost alerts to give you a live YES, NO, or WAIT answer — just enter your ZIP code.
Can I grow bok choy in Portland 2026?
Yes — Bok Choy grows well in Portland, OR. With a Zone 8b climate and a growing season of ~235 days, Portland is well-suited for cool-season crops like bok choy. As a frost-tolerant crop, bok choy can even go out a few weeks before the last frost date.
Grow Bok Choy in Other Cities
Get a live answer for your exact address
Enter your ZIP code — CanIPlant checks your real 7-day forecast, frost alerts, and 30-year climate data to tell you whether to plant bok choy right now.
Check My ZIP Code →