Infected flower stalks appear water soaked and become brown and shriveled. The bulbs will decay. A stem cross section shows masses of yellowish slime, oozing from the conducting tissue. Destroy infected plants. No chemical control is listed.
Black slime causes yellowish leaves which wither and are easily detached from the bulbs.
The bulbs disintegrate. Avoid infested soil. No chemical control is listed. Root rot causes dwarfed plants that flower poorly. The roots are decayed and the basal plate destroyed.