Fully hardy bulbous perennial, which is commonly grown. They must be increased vegetatively because their colour and vigour is the result of years of selection. The easiest way is by division of offsets. However, hyacinths reproduce slowy, so various methods of cutting the bulbs may be used if no offsets are available. The rate of success depends on keeping the bulbs free from rot. Hyacinths are fully hardy in the ground, but frost-tender in containers. New plants flower in two years.