When to plant cauliflower in Philadelphia
Common questions
When will cauliflower be ready to harvest in Philadelphia?
Expect to harvest from around late May (May 22–Jun 16) in Philadelphia, based on its local frost dates. Confidence 78%.
When should I start cauliflower seeds indoors in Philadelphia?
Start seeds indoors around mid February (Feb 14–Mar 7) in Philadelphia, based on its local frost dates. Confidence 83%.
When can I transplant cauliflower outdoors in Philadelphia?
Transplant outdoors around late March (Mar 23–Apr 13) in Philadelphia, based on its local frost dates. Confidence 84%.
Can I plant cauliflower in autumn in Philadelphia?
Yes — Philadelphia supports a second, autumn sowing of cauliflower around late July (Jul 24–Aug 7), timed to mature before the first fall frost.
How long is the growing season in Philadelphia?
Philadelphia has roughly 234 frost-free days, which is enough time to grow cauliflower to maturity outdoors.
Sow cauliflower 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 Philadelphia's frost dates.