Believe me or not, I really don't know what type of tree this is as I had planted some different fruit seeds including apple, peach, cherry, plum some years ago and have no faintest idea which on of them had germinated and grown to this little tree blossoming ^.^

And it was so hot in the late winter that all its buds bloomed once! and soon they all fell off and were replaced with new green leaves even before the Spring comes! And then Spring came and so did the cold weather and we suddenly had a snow storm and a dark cloudy sky ever after.