Sweet corn planted in Oklahoma should reach maturity by July or it won't pollinate well. Check the sweet corn seed packet or catalog to calculate days to maturity, usually 70 to 90 days, depending on the corn variety. It is best to plant sweet corn in Oklahoma by late April.
About the Author
Bobbie Brewer has been writing since 1990, with work appearing in print and online. She covers topics related to international travel, outdoor recreation, parenting and gardening. Brewer holds a Bachelor of Arts in English from California State University, Sacramento.