Pacific Northwest Plant Disease Management Handbook

Crocosmia-Corm Rot

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Latest revision: 
March 2024
Crocosmia bulb cut half longitudinally

Root and basal plate rot on these 'Limpopo' crocosmia which yielded both Rhizoctonia and Fusarium (as well as bulb mites).

OSU Plant Clinic Image, 2016.

Root and corm rot of this 'George Davidson' crocosmia yielded Fusarium.

OSU Plant Clinic image, 2015.

See:

Freesia - Corm Rot

Note Both Rhizoctonia and Fusarium have been found on corm rot samples by the OSU Plant Clinic.

Pscheidt, J.W., and Ocamb, C.M. (Senior Eds.). 2024 Pacific Northwest Plant Disease Management Handbook.
© Oregon State University.

Use pesticides safely!

  • Wear protective clothing and safety devices as recommended on the label. Bathe or shower after each use.
  • Read the pesticide label—even if you’ve used the pesticide before. Follow closely the instructions on the label (and any other directions you have).
  • Be cautious when you apply pesticides. Know your legal responsibility as a pesticide applicator. You may be liable for injury or damage resulting from pesticide use.

Trade-name products and services are mentioned as illustrations only. This does not mean that the participating Extension Services endorse these products and services or that they intend to discriminate against products and services not mentioned.

H - Home garden packaging commonly available.     O - Acceptable in organic production.