When to plant swiss chard in Cologne
Common questions
When can I sow swiss chard outdoors in Cologne?
Direct-sow around mid March (Mar 18–Apr 8) in Cologne, based on its local frost dates. Confidence 86%.
When will swiss chard be ready to harvest in Cologne?
Expect to harvest from around early May (May 7–May 17) in Cologne, based on its local frost dates. Confidence 80%.
When should I start swiss chard seeds indoors in Cologne?
Start seeds indoors around late February (Feb 26–Mar 19) in Cologne, based on its local frost dates. Confidence 85%.
When can I transplant swiss chard outdoors in Cologne?
Transplant outdoors around mid March (Mar 18–Apr 8) in Cologne, based on its local frost dates. Confidence 86%.
Can I plant swiss chard in autumn in Cologne?
Yes — Cologne supports a second, autumn sowing of swiss chard around early August (Aug 4–Aug 18), timed to mature before the first fall frost.
How long is the growing season in Cologne?
Cologne has roughly 238 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 Cologne's frost dates.