When to plant swiss chard in Portland
Common questions
When can I sow swiss chard outdoors in Portland?
Direct-sow around mid February (Feb 15–Mar 8) in Portland, based on its local frost dates. Confidence 88%.
When will swiss chard be ready to harvest in Portland?
Expect to harvest from around early April (Apr 6–Apr 16) in Portland, based on its local frost dates. Confidence 79%.
When should I start swiss chard seeds indoors in Portland?
Start seeds indoors around early February (Feb 1–Feb 22) in Portland, based on its local frost dates. Confidence 84%.
When can I transplant swiss chard outdoors in Portland?
Transplant outdoors around mid February (Feb 15–Mar 8) in Portland, based on its local frost dates. Confidence 88%.
Can I plant swiss chard in autumn in Portland?
Yes — Portland supports a second, autumn sowing of swiss chard around mid August (Aug 12–Aug 26), timed to mature before the first fall frost.
How long is the growing season in Portland?
Portland has roughly 266 frost-free days, which is enough time to grow swiss chard to maturity outdoors.
Sow swiss chard as soon as the soil is workable — it tolerates cool weather and light frost. Every date on this page is derived from that rule and Portland's frost dates.