IV. The Sweetness of the Date PalmPalm Trees are evergreens and as such they have been created to stay green, growing and fresh. They have also been designed so that the more mature they get the better fruit that they provide. Starting around the age of about 7 and going on to the age of around 90 - 100 Palm Trees are able to give their best fruit. Each year they can provide up to 200 - 250 pounds of fruit per tree. Some palms have even been reported to being able to give good fruit past 125 to 150 years of age and older.