How to Manage Pests
Pests in Gardens and Landscapes
Dry rot—Stromatinia gladioli
Dry rot attacks plants such as daffodils, freesias, and
gladiolus. The initial infection attacks corms either in
storage or in the soil. After the initial infection, decay
spreads up to the leaf bases. Dry rot causes leaves
to yellow and die. Plants
are stunted and fail to bloom. Leaf bases or stems
rot near the soil and tissue appears shredded. Very
small black sclerotia are imbedded in dead tissue. Bulbs
develop dark brown, sunken lesions with raised margins.
Dry rot is favored by cool, wet soil. Don’t grow
in infested soil during cool weather. Use pathogen-free
bulbs or plants. Provide good soil drainage. Avoid
overwatering. Remove infested plants and bulbs.