University of Minnesota Extension Small Grains Specialist Jochum Wiersma says the recommendation for increasing plant populations does not start until May 1. “We’re not entering the timeline yet where we have to start increasing. By the time we get to the first week in May, we could start looking at increasing seeding rates. At that time, we’re looking at one plant per square foot per week of delay. That’s roughly a three to five percent increase in seeding for each week we’re delayed.” Wiersma says the drop dead seeding date extends into June, but economics may dictate an earlier switch out of spring wheat.