Complex sentence: In 1852 an Englishman, Groeme Watson Taylor, bought the island and transformed Cala Maestra into a garden, planting it with eucalyptus and many exotic plants, among them the Asiatic Ailanthus altissima, which is now infesting the island.
Split into simpler sentences: In 1852 an Englishman, Groeme Watson Taylor, bought the island and transformed Cala Maestra into a garden, planting all over Eucalypus and many exotic plants. Among them the asiatic Ailanthus altissima, which is now infesting the island.