Aphids suck plant juices and spread the mosaic. No chemical controls are listed.
Bulb mite causes little brown spots on the bulbs which become powdery masses. The bulb surfaces become brown and hard. Discard heavily infested bulbs and avoid infested soil. Dip the bulbs in 122 degree water for a few minutes but only if roots have not yet formed. No chemical controls are listed.
White grubs feed on the bulbs and roots. No chemical controls are listed.
Stem and bulb nematode causes bent and yellowish leaves which later turn brown. Blossoming is reduced and bulb scales become brown and rotted. Bulb cross sections show a dark ring. Infested parts often become swollen. Avoid infested soil. No chemical controls are listed.