青春的英语是bloomy youth还是blooming youth?

其实,两者都没错.
Blooming youth 是现在较常见的用法,但是bloomy youth则是常见于古典文学中.
如在Lady Mary Wortley Montagu 的一首诗Town Eclogues:Tuesday; St.James's Coffee-House中就有一句：-
“Like thee successful,such their bloomy youth”
在戏剧The Tragedies of Euripides,Volume I里,剧本中也有一句：-
“nor did I spare myself,though possessing the gifts of bloomy youth,wherein I delighted.”
楼主还可参考The Aeneid里的几行句子：-
Thy *bloomy youth* deserves a longer date.
Live thou to mourn thy love's unhappy fate,
To bear my mangled body from the foe,
Or buy it back,and funeral rites bestow.