Fantasia Essential to our list for a complete summer of nectarines, Fantasia is an older, formerly commercial nectarine that has discovered a new life as a garden fruit. A descendant of Le Grand that comes at the just-right season between July and August, with deep yellow, gem-type flesh, melting, juicy, with the true nectarine flavor, sweet and relieved with a suggestion of tart. 650 hours. Early August. On Lovell.