Well, all of these berry-bearing plants rely on birds to disperse their seeds, so their berries ripen at different times, to ensure that only a few plants have mature berries at any one time.
(all of these berry-bearing plants; rely; on birds; to disperse their seeds) (their berries; ripen; T:at different times)
all of these berry-bearing plants their berries
rely ripen
on birds to disperse their seeds
T:at different times