Is garlic grown in the home garden...

In cool weather, garlic can be attacked by a fungus called white rot. Not much can be done to control or prevent that problem except rotating your crops and cleaning up the area after harvesting. The spores can live in the soil for many years. The fungus affects the base of the leaves and roots. In warmer weather, you may come across basal rot, another fungus causing similar problems. Pink rot, clove rot, and neck rot are three other common fungi.