I planted a michalea alba last September and it seemed to be ok. It started blooming in late October and the last blooms are on the plant now. As...I planted a michalea alba last September and it seemed to be ok. It started blooming in late October and the last blooms are on the plant now. As the weather got colder more and more leaves started yellowing and many have fallen off. should I be concerned or do Michaela albas lose leaves in the colder months? Show more