2019 Crop Insurance Deadline: March 15, 2019 March 15, 2019 is the deadline to enroll, cancel, or change policy coverage for crop insurance on spring-seeded crops in Maine such as corn, sweet corn, barley, oats, spring wheat, and potato.  Those producing other “non-insurable” spring-seeded crops such as tomatoes, pumpkins, squash, etc. may seek coverage through read more 2019 Crop Insurance Deadline Approaches