This is the kind of irresistibly quaint florist you just might stumble upon in London’s Kensington. So it’s only natural that Parterre, despite its French name, specializes in formal, English-style arrangements (from $65; delivery from $10). A classic grouping might include roses, orange ranunculuses, grape hyacinths and green snowballs. Bouquets are generally compact and vibrant. For parties, Parterre uses the venue creatively: banisters might wear a necklace of or­­chids, and children’s tables could be adorned with such delightful touches as moss bunny topiaries.