Basal Rot (Bulb Rot)

Bulbs or corms soften and rot at base with foul smell. Use well-draining soil, avoid overwatering, and choose disease-free bulbs.

Reduce moisture around affected tissue by improving drainage and air circulation. Remove rotted material cleanly and dispose of it away from the planting area. Avoid wounding healthy tissue during cleanup, as fresh wounds create new entry points. If the problem keeps returning, evaluate whether the site is too wet or poorly drained for the species you are growing.