When to plant swiss chard in Portland
Common questions
When can I sow swiss chard outdoors in Portland?
Direct-sow around late April (Apr 23–May 14) in Portland, based on its local frost dates. Confidence 86%.
When will swiss chard be ready to harvest in Portland?
Expect to harvest from around mid June (Jun 12–Jun 22) in Portland, based on its local frost dates. Confidence 80%.
When should I start swiss chard seeds indoors in Portland?
Start seeds indoors around early April (Apr 3–Apr 24) in Portland, based on its local frost dates. Confidence 85%.
When can I transplant swiss chard outdoors in Portland?
Transplant outdoors around late April (Apr 23–May 14) in Portland, based on its local frost dates. Confidence 86%.
Can I plant swiss chard in autumn in Portland?
Yes — Portland supports a second, autumn sowing of swiss chard around mid July (Jul 12–Jul 26), timed to mature before the first fall frost.
How long is the growing season in Portland?
Portland has roughly 165 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.