How Late Can I Plant Corn?

Joe Lauer, Corn Agronomist, University of Wisconsin-Madison

The last USDA-NASS report indicated that 74% of the Wisconsin corn acres have been planted, so we still have over 1 million acres to plant. As weather delays continue, I am getting more questions about, “How late can corn be planted?” The short answer is August 1. However, your production objectives need to change. Most producers will not likely get into the field until next week, so the only locations that can realistically produce grain yet are the southern tier of Wisconsin counties.

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