I think we need to draw a distinction between the garden of Eden and the rest of the earth. I don't believe the entire earth was paradisical; if it was there would have been no need for a garden, nor would expulsion from the garden result in entry to a lone and dreary world.
Only those in the garden were in a higher form. Animals and plants outside the garden would have been procreating. Perhaps they were not subject to death though until the fall, which is how they were able to replenish the earth over the thousands of years Adam and Eve were in Eden.
Just my opinion.