Zone crop calendar
When to plant watermelon in Zone 6a
These supported ZIPs share the same zone label but still use ZIP-specific frost dates.
Milwaukee, WI · Zone 6a
Watermelon May 24
Open answer · last frost May 10
Chicago, IL · Zone 6a
Watermelon May 9
Open answer · last frost Apr 25
Omaha, NE · Zone 6a
Watermelon May 19
Open answer · last frost May 5
Aurora, CO · Zone 6a
Watermelon May 19
Open answer · last frost May 5
Denver, CO · Zone 6a
Watermelon May 19
Open answer · last frost May 5
Colorado Springs, CO · Zone 6a
Watermelon May 29
Open answer · last frost May 15