fruit each season

Psalm 1
1 Oh, the joys of those who do not follow the advice of the wicked,
     or stand around with sinners,
     or join in with mockers.
2 But they delight in the law of the LORD,
  meditating on it day and night.

3 They are like trees planted along the riverbank,
  bearing fruit each season.
Their leaves never wither,
  and they prosper in all they do.


"bearing fruit each season"?

in EVERY season?

bearing some kind of fruit in every season of life?

hmmm...