As the old plants are lost, no new ones are able to establish because the seed are unable to sprout and seedlings become established.
(the old plants; are lost; ) (seedlings; become; established) (no new ones; are; able to establish; because the seed are unable to sprout and seedlings become established) (seedlings; established; ) (no new ones; to establish; ) (the seed; are; unable to sprout) (the seed; to sprout; )
the old plants seedlings no new ones seedlings no new ones the seed the seed
are lost become are established to establish are to sprout
established
able to establish because the seed are unable to sprout and seedlings become established
unable to sprout