23 - Many people mowing their lawns. Swamp sparrows arrive in wetlands and begin singing. Prairie-smoke blooms on the Uhler Prairie, Linnaeus Arboretum at Gustavus. Very late season cross-country skier on Caribou Lake ice cover in Cook County. 25 - Tree swallows are nest building.
Wood ducks continue egg laying.
Native sugar maples and ironwood trees first leafing out. Moongold apricot trees begin blooming. Magnolias blooming nicely in Minn. Landscape Arboretum. Statewide, the planting of oats is at 20 percent, sugarbeets at 18 percent and green peas for processing at 13 percent. First brood of newly hatched mallard ducklings observed.