Common hyacinth, not to be confused for grape hyacinth, is a bulb plant with long, thick leaves and bell-shaped blooms that grow in clusters. It's a perennial plant that typically blossoms during March and April and is very fragrant. Hyancinth grows in a variety of hues such as blue, lavender, white, pink, yellow and peach. Blue hyacinths can symbolize sincerity. Other colors can mean loveliness, play and constancy.