 On February 14 , 2013 , the Dubai Miracle Garden , a 72 @,@ 000 @-@ metre ( 236 @,@ 000 @-@ foot ) flower garden , opened in <unk> . It is the world 's largest flower garden . The garden has a total of 45 million flowers with re @-@ use of waste water through drip irrigation . During the summer seasons from late May to September when the climate can get extremely hot with an average high of about 40 ° C ( 104 ° F ) , the garden stays closed . 
