Blackberry Winter?

When I lived in Kentucky I would occasionally hear terms for various "winters" that interrupted the springtime. I can't remember all the terms, but "blackberry winter" was one of them. I guess this means a cold snap after blackberry blossoms have emerged. Well, our blackberries have not yet bloomed, but we are having something like sarvis (seviceberry) winter, or redbud winter, daffodil winter, dogwood winter, Cleveland pear winter, tulip winter--some kind of winter! This is typical for our spring, the fits and starts, always maddening and always there! Let's hope that our fruit trees and crops are not damaged and that the great Lake Erie doesn't sweep in "12 inches of partly cloudy" (as Dick Goddard, the local weather god, says.).