Aluminium sulfate
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Hydrangea macrophylla
Hydrangea quercifolia
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University of Delaware Botanic Gardens
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Ōe, Yamagata
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Kawachi, Ibaraki
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Tagami, Niigata
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Katsuragi, Wakayama
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Ōkawa, Kōchi
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Minato, Tokyo
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Shibukawa, Gunma
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Pico Island
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Hydrangeaceae
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Viburnum
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Uto, Kumamoto
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PH indicator
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Hydrangea
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Vesak
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French hydrangea
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Bigleaf hydrangea
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