I have four tree like shrubs in front of my house. Im not sure what they are they produce a white bloom like a sweet olive. They might be something else but they similar. The are about 9'-10' with a woody trunk. They usually lose some leaves in the winter but not all of them. However, after the really cold weather at Christmas they dropped every leaf. I wasn't sure if they were alive then they all started leafing out in February. Then the last freeze we had in March all of the new leaves turned brown. They are have started putting out a few leaves over the last couple of weeks but they are 99% still brown. Is there anything I can do to help them recover.