Garlic

Diseases

---

(Click on photo to enlarge)

General Garlic Diseases and Pest Management

• Onion Disease Guide (pdf) – A Practical Guide for Seedsmen, Growers and Agricultural Advisors. Published by Seminis Vegetable Seeds, Inc.’s Plant Health Department (covers onion and leek; mentions garlic).
• Problems of Stored Garlic. Oregon State University Plant Clinic.

Diseases

Basal rot

Disease: Basal rot
Pathogen: Botytis allii and Fusarium roseum

On-Line Resources:

• Pacific Northwest Plant Disease Management Handbook: Garlic (Allium sativum) – Basal Rot.
• Onions, Garlic: Basal rot, Washington State University Hortsense.

Return to the Top

Embellisia skin blotch and bulb canker of garlic

Common name: Embellisia skin blotch and bulb canker of garlic
Latin binomial: Embellisia allii
Host plants: Primarily garlic. Skin blotch is the most common symptom caused by this fungus, and usually is a cosmetic blemish on the outer skin layers of garlic that does not affect consumer appeal unless sufficiently developed. Bulb canker consists of corky masses, primarily on the top or sides of individual cloves. If the first true leaf of a garlic seedling becomes infected, the leaf may be curled.

Online Resources:

• Skin blotch in garlic.
• Oregon State University Extension Bulletin on Embellisia Skin Blotch (PDF).

Return to the Top

White rot

Common name: White rot
Latin binomial: Sclerotium cepivorum
Host plants: Garlic, onion, and other Allium spp.

On-Line Resources:

• Pacific Northwest Plant Disease Management Handbook: Garlic (Allium sativum) – White Rot.

Return to the Top

Our pages provide links to external sites for the convenience of users. WSU Extension does not manage these external sites, nor does Extension review, control, or take responsibility for the content of these sites. These external sites do not implicitly or explicitly represent official positions and policies of WSU Extension.