However, the hemlocks that naturally grow on the eastern coast have no resistance to this insect and there are no predators to it.
(the hemlocks; naturally grow; L:on the eastern coast) (the hemlocks that naturally grow on the eastern coast; have; no resistance to this insect)
the hemlocks the hemlocks that naturally grow on the eastern coast
naturally grow have
L:on the eastern coast
no resistance to this insect