The Collaborative International Dictionary of English v.0.48:

Candytuft \Can"dy*tuft`\ (k[a^]n"d[-e]*t[u^]ft`), n. (Bot.)
   An annual plant of the genus Iberis, cultivated in gardens.
   The name was originally given to the Iberis umbellata,
   first, discovered in the island of Candia (The Italian name
   for Crete). It is grown as an ornamental plant, having tufted
   red,violet, purple, or pink flowers.
   [1913 Webster]