For some unknown reason, this spring it has been very poor with foliage. Only a two branches have sprouted leaves and the remaining buds look as though they will not grow any further. They are dried up and on woody branches, but looked healthy in February. There are also a couple of very small sprouters poping out directly on the main trunk. Not sure what do so as this tree has been healthy year after year with an abundance of green, now all of a sudden, we are met with a very mild winter and this has happened. Does anyone know what has happened?