When to plant broccoli in St. Louis
Common questions
When will broccoli be ready to harvest in St. Louis?
Expect to harvest from around mid May (May 15–Jun 9) in St. Louis, based on its local frost dates. Confidence 76%.
When should I start broccoli seeds indoors in St. Louis?
Start seeds indoors around mid February (Feb 16–Mar 9) in St. Louis, based on its local frost dates. Confidence 80%.
When can I transplant broccoli outdoors in St. Louis?
Transplant outdoors around mid March (Mar 16–Apr 6) in St. Louis, based on its local frost dates. Confidence 84%.
Can I plant broccoli in autumn in St. Louis?
Yes — St. Louis supports a second, autumn sowing of broccoli around late July (Jul 22–Aug 5), timed to mature before the first fall frost.
How long is the growing season in St. Louis?
St. Louis has roughly 218 frost-free days, which is enough time to grow broccoli to maturity outdoors.
Sow broccoli 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 St. Louis's frost dates.