horticultural
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/ˌhɔːrtɪˈkʌltʃərəl/
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/ˌhɔːtɪˈkʌltʃərəl/
relating to the art or science of gardening, especially in the cultivation of fruits, vegetables, and ornamental plants
The horticultural society organizes an annual flower show that attracts visitors from all over the country.