Dig up the tulip bulbs once the leaves have died back. Use care when digging to keep damage to a minimum. Remove the bulbs that have developed bublets. Remove the leaves from the tulip bulbs.
Shake off the soil from the roots of the tulip bulbs. Wash the bulbs to remove any remaining soil. Dry the bulbs with paper towels. Set the bulbs on a drying screen for two to three days to let the bulbs dry.
Pull the bulblets from the parent bulb gently to avoid damage to the tulip bulb or the offsets. Use a sharp knife to separate the bulblets, if necessary.
Coat the new bulbs and exposed sections of the old bulbs with sulfur powder. The sulfur keeps the bulbs from rotting.
Plant the bulbs in the garden during the fall. The new bulbs may take two or more years to mature enough to flower.