Crop diseases
Leek Diseases
Disease names frequently listed for Leek varieties. Prefer resistant cultivars and cultural prevention where possible.
Diseases mentioned for this crop
- Downy Mildew 26 mentions
- White Rot 17 mentions
- Purple Blotch 16 mentions
- Fusarium Basal Rot 12 mentions
- Neck Rot 10 mentions
- Rust 10 mentions
- Pink Root 9 mentions
- Bacterial Soft Rot 5 mentions
- Bulb Rot In Wet Conditions 1 mentions
- Otherwise Very Disease Resistant 1 mentions
- Crown Rot In Poorly Drained Soils 1 mentions
- Root Rot In Poorly Drained Soil 1 mentions
- Fusarium Basal Rot (In Poor Drainage 1 mentions
- Downy Mildew In Humid Conditions 1 mentions
- Purple Blotch (Rarely Serious 1 mentions
- Root Rot In Poorly Drained Soils 1 mentions
- Otherwise Very Healthy 1 mentions
- Basal Rot 1 mentions
- Very Disease Resistant 1 mentions
- Occasional Rust In Humid Conditions 1 mentions
- Leek Rust 1 mentions
- Fusarium Wilt 1 mentions
- Pink Root Rot 1 mentions
- Botrytis 1 mentions
Resistance notes from varieties
- Moderate resistance to pink root, susceptible to downy mildew and thrips damage
- Good resistance to white rot and fusarium, very cold hardy
- Good general disease resistance, very hardy and tolerant of weather extremes
- Good resistance when grown in well-drained soil, deer and rodent resistant
- Good storage qualities, moderate disease resistance
- Good resistance to pink root and fusarium basal rot
- Moderate resistance to common onion diseases
- Good resistance to white rot and fusarium basal rot
FAQ: diseases of Leek
What diseases affect Leek?
Cultivar notes commonly mention Downy Mildew, White Rot, Purple Blotch, Fusarium Basal Rot, Neck Rot, Rust, Pink Root, Bacterial Soft Rot, Bulb Rot In Wet Conditions, Otherwise Very Disease Resistant, Crown Rot In Poorly Drained Soils, Root Rot In Poorly Drained Soil. Choose resistant varieties where available and improve airflow / drainage to reduce risk.
Lists are aggregated from cultivar notes, not a lab diagnosis. Confirm with local extension before treating.