紫藤掛雲木， 

Strings of wisteria down from tall logs gracefully hanging;

花蔓宜陽春。

clinging purple flowers are perfect match for balmy spring.

密葉隱歌鳥， 

Singing and chirping are the birds hidden in the leafy trees,  

香風留美人。

and fragrances wafting in the wind keep all belles lingering.       

PS  The other day I experienced an unpleasant visit to a wisteria garden in Tansui.  But soon I found a beautifully-written essay given by our fellew blogger Ms 和煦秋陽 at http://classic-blog.udn.com/jingle2010/155024991, from which for the first time have I ever read subject poem.  Thanks, maam.