Definition of the Royal Horticultural Society from the Oxford Advanced Learner's Dictionary

 

the Royal Horticultural Society

 
BrE
 
; NAmE
 
(abbreviation the RHS)
 
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a British society of gardeners, started in 1804 by Joseph Banks and others, which holds the Chelsea Flower Show each year. The Society owns various gardens around Britain, including the garden at Wisley where research into horticulture (= growing flowers, fruit and vegetables) is carried out. It also gives advice to gardeners, for example via its website.