Nearby, several Americans were resting in the shade of some mulberry trees, talking to each other.

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Newcomers need to learn to love the saguaro cactus, he says, rather than planting eucalyptus, olive and mulberry trees.

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The region boasts a warm climate and fertile lands, which are ideal for the growth of mulberry trees and sericulture.

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In the ponds that dot the villages, silkworm waste is fed to fishes, while mud from the ponds fertilizes the mulberry trees, and the leaves in turn feed the silkworms.

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