But because there are so few varieties planted on the wall, once the orchid flowering season in early spring has passed the theater's vertical garden often appears rather sparse. As a result, the concert hall's Green Symphony is usually a much more splendid sight than the theater's Orchid Waltz.
不過由於牆上植栽種類太少，一旦過了從冬天到初春的蘭花花期，綠牆就顯得稀稀落落遮掩不住，相較之下「綠色交響曲」就比「蘭花圓舞曲」來得豐富燦爛。